Airflow, fans and whole-system behaviour
C-POLAR and NanoFlashing™ questions, with the company’s answers and the sources they come from.
Last reviewed: .
All questions in this libraryWhat evidence applies to the actual installed system rather than a material sample?
The company's evidence is evidence about NanoFlashing™ filter media and about the filters and sites named with it; evidence about an installed system in a particular building comes from that system's own commissioning and measurement.
The Terms of Use state: “A test of C-POLAR material, a component, or a prototype does not establish the performance of a finished product that incorporates it. Construction, processing, storage, wear, cleaning, other components, and actual use may change the result.” They also state: “Use evidence, specifications, instructions, and warnings specific to the actual finished product and use.” The label for the NanoFlashing™ Air Filter states: “Results in a building depend on the system, the airflow, and how well the filter fits its track.” The nearest published measurements of installed systems are on the Validation page, which reports two identical towers compared at a public hospital in Vancouver, and before-and-after air handling unit measurements at a financial landmark in London, a major international airport in the US and a public university in Melbourne, each over a stated period. At each site the Validation page reports bioaerosols, and at three of them particulates, independently measured with MicronView's 405 nm Bio-fluorescent Air Monitoring System. Each is one building over one period, and it is not a result for another building.
Source: C-POLAR — Terms of Use (https://cpolar.tech/terms/) and C-POLAR — Validation (https://cpolar.tech/validation/); NanoFlashing™ Air Filter label.
Reviewed on .
Sources
- C-POLAR — Terms of Use
- C-POLAR — Validation
- NanoFlashing™ Air Filter label
What measured pressure drop and airflow data apply to the exact filter configuration I plan to specify?
This site publishes no pressure-drop or airflow data for any filter configuration; the data for a specific configuration comes from the manufacturing partner who makes that filter.
The Validation page names Eurovent Certita Certification, Certificate No. 15.06.011, which certifies a ten-pocket bag filter at ISO ePM1 70% with an A class energy rating. Certificate No. 15.06.011 covers a ten-pocket bag filter, not a flat panel filter; a rating belongs to the construction that was tested. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. Every commercial NanoFlashing™ product is made by a manufacturing partner, in their facility, in their format. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and a replacement point set by pressure drop or by elapsed time, whichever comes first. The company names its manufacturing and distribution partners on the About page and the Air page: Aero Pro, AQ Filter, BGE Indoor Air Quality Solutions, Olympic International and VOLZ Filters. Enquiries about a specific configuration go to [email protected]. Certificate No. 15.06.011 can be looked up at source in the Eurovent Certita Certification certified product directory.
Source: C-POLAR — About (https://cpolar.tech/about/), C-POLAR — Terms of Use (https://cpolar.tech/terms/) and C-POLAR — Contact (https://cpolar.tech/contact/); NanoFlashing™ Air Filter label; C-POLAR — Validation, https://cpolar.tech/validation/; Eurovent Certita Certification certified product directory, read 19 September 2026, https://www.eurovent-certification.com/; C-POLAR — NanoFlashing™ Air, https://cpolar.tech/air/.
Reviewed on .
All questionsDoes a reported rating depend on conditioning or charge state that differs from the marketed configuration?
The polarity in NanoFlashing™ is not the temporary charge that rating standards remove before testing; it is a permanent physical property of the filter media.
The Validation page states: “Industry standards ASHRAE 52.2 Appendix J and ISO 16890 test electrostatic filters after their temporary charge is removed, showing how they perform without it.” NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The polarity is a positive electric charge at rest. It is measured as surface charge density, in nanocoulombs per square centimetre. The charge is measured on every production run, and the measurement can be repeated on any filter, upon request. The air-filtration records named on the Validation page are LMS Technologies, Report LMS#9904, 28 April 2025, a single-pass fractional efficiency test on a 24 × 24 × 2 in. pleated air filter in an ASHRAE 52.2 test duct, in accordance with standard LMS aerosol test procedures, and Report 6847, ASHRAE 52.2 with Appendix J, and Eurovent Certita Certification, Certificate No. 15.06.011. Certificate No. 15.06.011 covers a ten-pocket bag filter, not a flat panel filter, and Report 6847 is on a 24 × 24 × 30 in. pocket filter; a rating belongs to the construction that was tested. Certificate No. 15.06.011 can be looked up at source in the Eurovent Certita Certification certified product directory.
Source: C-POLAR — Validation (https://cpolar.tech/validation/); Statement of Classification for the NanoFlashing™ Air Filter, NF Technical Products Inc; Eurovent Certita Certification certified product directory, read 19 September 2026, https://www.eurovent-certification.com/. A copy may be made available on our review of the request.
Reviewed on .
Sources
- C-POLAR — Validation
- Statement of Classification for the NanoFlashing™ Air Filter, NF Technical Products Inc.
- Eurovent Certita Certification certified product directory, read 19 September 2026
Does a laboratory result tell me how the complete product will perform in my room or water system?
A laboratory result states what that test found on what it tested; how a complete product performs in a room is a property of the room, the system and the installation.
The Terms of Use state: “A test of C-POLAR material, a component, or a prototype does not establish the performance of a finished product that incorporates it. Construction, processing, storage, wear, cleaning, other components, and actual use may change the result.” They also state: “Use evidence, specifications, instructions, and warnings specific to the actual finished product and use.” The label for the NanoFlashing™ Air Filter states: “Results in a building depend on the system, the airflow, and how well the filter fits its track.” The nearest published measurements of installed systems are on the Validation page: two identical towers compared at a public hospital in Vancouver, and before-and-after air handling unit measurements at a financial landmark in London, a major international airport in the US and a public university in Melbourne, each over a stated period. At each site the Validation page reports bioaerosols, and at three of them particulates, independently measured with MicronView's 405 nm Bio-fluorescent Air Monitoring System. Each is one building over one period, and it is not a result for another building. For a water system the Terms state that the Water chapter describes a Research Application, and that it does not describe a finished product currently available from C-POLAR for that use.
Source: C-POLAR — Terms of Use (https://cpolar.tech/terms/) and C-POLAR — Validation (https://cpolar.tech/validation/); NanoFlashing™ Air Filter label.
Reviewed on .
Sources
- C-POLAR — Terms of Use
- NanoFlashing™ Air Filter label
- C-POLAR — Validation
How do sealing, bypass, frame design and installation orientation affect the assembly evidence?
Sealing, bypass, frame design and installation orientation decide how much of the air actually passes through the media; the company's evidence is about NanoFlashing™ filter media and about the filters and sites named with it.
The label for the NanoFlashing™ Air Filter instructs: “Check that the filter sits square in the track with no gap at the frame. Air that passes around a filter is not treated by it.” It instructs that the filter is fitted with the airflow arrow pointing toward the blower, that is, in the direction the air travels. It states: “Improper installation can reduce airflow or damage the equipment.” and “Results in a building depend on the system, the airflow, and how well the filter fits its track.” The filter captures airborne particles mechanically and by electrostatic attraction, and it can act only on the air that passes through it. The company publishes no frame, gasket or bypass test for an assembly; the frame and the seal are part of the finished filter.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/) and C-POLAR — Validation (https://cpolar.tech/validation/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
- C-POLAR — Validation
What documented checks are needed after installation to confirm fit and operation?
The label for the NanoFlashing™ Air Filter sets the checks for the filter itself: that it is fitted with the airflow arrow pointing toward the blower, and that it sits square in the track with no gap at the frame.
The label instructs that the system is switched off at the thermostat or at the unit's disconnect before the filter access is opened, that the used filter is removed and discarded as directed under Storage and Disposal, and that the access panel is closed and the system switched back on. It states: “Air that passes around a filter is not treated by it.” and “Improper installation can reduce airflow or damage the equipment.” It also instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” The label covers the filter; the commissioning record for the system, including airflow and pressure readings after the change, belongs to the operator of that system.
Source: NanoFlashing™ Air Filter label.
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Sources
- NanoFlashing™ Air Filter label
What evidence supports any claimed energy saving after accounting for actual airflow and filter loading?
The company does not claim an energy saving for a filter in a system it has not measured.
On the Validation page the company reports a six-month measurement at a financial landmark in London, March 2024 to September 2024, made before and after the air handling unit filters were changed to NanoFlashing™, in which particulates, bioaerosols and energy were all measured lower. The Validation page also names Eurovent Certita Certification, Certificate No. 15.06.011, which certifies a ten-pocket bag filter at ISO ePM1 70% with an A class energy rating; a rating belongs to the construction that was tested. The Terms of Use state: “A reported result describes only what the identified test found.” They also state: “Use evidence, specifications, instructions, and warnings specific to the actual finished product and use.” That is one building over one period, measured after a filter change in its own air handling units; it is not an energy figure for another system, another filter configuration or another loading condition.
Source: C-POLAR — Validation (https://cpolar.tech/validation/), C-POLAR — Terms of Use (https://cpolar.tech/terms/) and Eurovent Certita Certification, Certificate No. 15.06.011, ISO 16890.
Reviewed on .
Sources
- C-POLAR — Validation
- C-POLAR — Terms of Use
- Eurovent Certita Certification, Certificate No. 15.06.011, ISO 16890
What temperature, humidity and loading limits are documented for the proposed installation?
The label for the NanoFlashing™ Air Filter sets the operating conditions: dry air only, at or below the rated airflow and maximum face velocity, with replacement at a stated pressure drop or after a stated interval, whichever comes first.
The label instructs: “Use in dry air only. Do not use in ducts carrying liquid water, steam or oil mist, or anywhere the media may become wet.” and “Do not install a filter whose media is torn, crushed, wet or visibly damaged.” For storage it instructs that the filter is kept flat or on edge in the original packaging, indoors and dry, away from direct sunlight and moisture. The conditions tested, listed on the Validation page, are heavy dust loaded, fast air flow, used filter for 1 year, after 60 washes, after 2 years of storage, and after 60C for 64 days. The company publishes no temperature or humidity range for a particular installation; those limits are set by the partner who makes the finished filter.
Source: NanoFlashing™ Air Filter label; C-POLAR — Validation (https://cpolar.tech/validation/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Validation
Could this retrofit affect equipment approval, service obligations or the equipment manufacturer's warranty?
The company does not speak for another manufacturer's approval, service obligations or warranty.
The Terms of Use state: “A warranty, manual, statement, order confirmation, or other document issued only by a manufacturer, seller, distributor, or other third party does not bind C-POLAR.” They also state: “Only an express written warranty that identifies C-POLAR as the warrantor creates a C-POLAR warranty.” C-POLAR markets a materials technology, and the manufacturer and seller of a finished product are responsible for its design, manufacture, labeling, instructions, claims, sale, and warranty. The label for the NanoFlashing™ Air Filter instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” and states: “Improper installation can reduce airflow or damage the equipment.” Whether a retrofit affects an equipment manufacturer's approval or warranty is answered by that manufacturer, on its own terms. NanoFlashing™ is a technology; the name, rating and sale of a product that carries it are set by that product's maker and seller.
Source: C-POLAR — Terms of Use (https://cpolar.tech/terms/); NanoFlashing™ Air Filter label.
Reviewed on .
Sources
- C-POLAR — Terms of Use
- NanoFlashing™ Air Filter label
Who is responsible for commissioning, maintenance records and later changes to the installed configuration?
Commissioning, maintenance records and later changes to an installed configuration belong to the owner and operator of the system, together with the maker of the finished filter.
C-POLAR markets a materials technology, and the manufacturer and seller of a finished product are responsible for its design, manufacture, labeling, instructions, claims, sale, and warranty, except for a responsibility C-POLAR expressly accepts in a Separate Agreement. Every commercial NanoFlashing™ product is made by a manufacturing partner, in their facility, in their format. The label for the NanoFlashing™ Air Filter sets the replacement point, at a stated pressure drop or after a stated interval, whichever comes first, and instructs: “Do not run the system with no filter in the track.” A Separate Agreement is a written agreement signed by an authorized C-POLAR officer, and only an express written warranty that identifies C-POLAR as the warrantor creates a C-POLAR warranty.
Source: C-POLAR — Terms of Use (https://cpolar.tech/terms/) and C-POLAR — About (https://cpolar.tech/about/); NanoFlashing™ Air Filter label.
Reviewed on .
Sources
- C-POLAR — Terms of Use
- C-POLAR — About
- NanoFlashing™ Air Filter label
How does the filter change the operating point on my fan's performance curve?
The filter's resistance adds to the pressure the system's fan works against; the operating point on a fan's performance curve is taken from the finished filter's own data and the system's commissioning readings, and the company does not publish the pressure drop the filter adds.
The one building energy measurement the company publishes is at a financial landmark in London over six months from March 2024 to September 2024, measured before and after the air handling unit filters were changed to NanoFlashing™. The Validation page names Eurovent Certita Certification, Certificate No. 15.06.011, which certifies a ten-pocket bag filter at ISO ePM1 70% with an A class energy rating; a rating belongs to the construction that was tested. This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/); C-POLAR — Validation, https://cpolar.tech/validation/.
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
- C-POLAR — Validation
Will the existing motor draw more current after this retrofit?
The filter draws no power, but its resistance adds to the pressure the system's fan works against; whether an existing motor draws more current after a retrofit is settled by that system's own measurements, and the company does not publish a motor load figure.
The one building energy measurement the company publishes is at a financial landmark in London over six months from March 2024 to September 2024, measured before and after the air handling unit filters were changed to NanoFlashing™. The Validation page names Eurovent Certita Certification, Certificate No. 15.06.011, which certifies a ten-pocket bag filter at ISO ePM1 70% with an A class energy rating; a rating belongs to the construction that was tested. This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/); C-POLAR — Validation, https://cpolar.tech/validation/.
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
- C-POLAR — Validation
Could reduced airflow cause a cooling coil to freeze?
Reduced airflow is a system risk that the company does not assess, and the label instructs that the filter is not to be used where it would restrict airflow beyond the system's specification.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Could the proposed filter create excessive pressure in a return-air plenum?
A filter's resistance adds to the pressure a system sees; the pressure a filter adds in a particular system is taken from the finished filter's own data and that system's measurements, and the company does not publish plenum pressure data.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology. NanoFlashing™ is a technology; the name, rating and sale of a product that carries it are set by that product's maker and seller.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Does filter loading shift air between parallel branches of a duct system?
How loading shifts air between parallel branches is settled by that system's own balancing, and the company does not publish duct or branch flow data.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Can a bank of filters be balanced if individual units have different resistance?
Balancing a bank is the work of the system designer with the maker of the finished filters, and the company does not publish unit-to-unit resistance data for a filter bank.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Does a variable-speed fan compensate for loading within its available range?
Whether a variable-speed fan can compensate within its available range is answered from that fan's own data and the system's measurements, and the company does not publish a loading curve.
The one building energy measurement the company publishes is at a financial landmark in London over six months from March 2024 to September 2024, measured before and after the air handling unit filters were changed to NanoFlashing™. The Validation page names Eurovent Certita Certification, Certificate No. 15.06.011, which certifies a ten-pocket bag filter at ISO ePM1 70% with an A class energy rating; a rating belongs to the construction that was tested. This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/); C-POLAR — Validation, https://cpolar.tech/validation/.
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
- C-POLAR — Validation
What happens to delivered clean airflow when the fan runs at its quiet setting?
What a quiet setting delivers is a property of the system, and the company does not publish delivered airflow at any fan setting.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology. NanoFlashing™ is a technology; the name, rating and sale of a product that carries it are set by that product's maker and seller.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Is rated airflow specified for a clean filter or a loaded filter?
The rated airflow and maximum face velocity on the label are the conditions the filter is to be used at or below; they are limits for use, not a performance figure measured on a loaded filter.
The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and a replacement point set by pressure drop or by elapsed time, whichever comes first. It instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” The company publishes no loaded-state airflow figure. C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Does changing pleat spacing alter the usable filtration area?
Pleat spacing and usable media area are part of the finished filter's construction, which the company does not specify.
The company publishes no pleat geometry, media area, frame specification or deflection data. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. Every commercial NanoFlashing™ product is made by a manufacturing partner, in their facility, in their format, and the manufacturer and seller of a finished product are responsible for its design, manufacture, labeling, instructions, claims, sale, and warranty. The label for the NanoFlashing™ Air Filter instructs: “Do not cut, fold, trim, bend, puncture or alter the filter or its frame.” and “Do not install a filter whose media is torn, crushed, wet or visibly damaged.” The polarity is a property of the media, so it is present over whatever media area the finished filter carries.
Source: C-POLAR — About (https://cpolar.tech/about/) and C-POLAR — Terms of Use (https://cpolar.tech/terms/); NanoFlashing™ Air Filter label.
Reviewed on .
Sources
- C-POLAR — About
- C-POLAR — Terms of Use
- NanoFlashing™ Air Filter label
Can a prefilter protect the treated layer without restricting the system too much?
A prefilter is a system design choice the company does not specify, and whether it restricts the system too much is calculated from the data the maker of each finished filter supplies.
The company publishes no multi-stage design guidance and no pressure loss figure for the media. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The filter captures airborne particles mechanically and by electrostatic attraction. The label for the NanoFlashing™ Air Filter instructs: “Do not use where this filter would restrict airflow beyond the system's specification.”
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
How does a downstream filter interact with the pressure loss of this material?
How a downstream filter interacts with the pressure loss of this media is a system calculation the company does not publish, and it is made from the data the maker of each finished filter supplies.
The company publishes no multi-stage design guidance and no pressure loss figure for the media. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The filter captures airborne particles mechanically and by electrostatic attraction. The label for the NanoFlashing™ Air Filter instructs: “Do not use where this filter would restrict airflow beyond the system's specification.”
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Is the filter suitable for airflow that reverses direction during normal operation?
The filter is fitted and used in one direction, so it is not offered for airflow that reverses during normal operation.
The label for the NanoFlashing™ Air Filter instructs that the filter is fitted into the filter track with the airflow arrow pointing toward the blower, that is, in the direction the air travels. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter, and the polarity is a positive electric charge at rest. The filter captures airborne particles mechanically and by electrostatic attraction. The company publishes no test of reversing airflow; an application with reversing flow is discussed with the maker of the finished filter, and enquiries go to [email protected].
Source: NanoFlashing™ Air Filter label; C-POLAR — Contact (https://cpolar.tech/contact/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Contact
Could a tightly packed installation prevent air from reaching part of the filter face?
A tightly packed installation can leave part of the filter face without airflow, and the label requires the filter to sit square in its track with no gap at the frame.
The label for the NanoFlashing™ Air Filter instructs: “Check that the filter sits square in the track with no gap at the frame. Air that passes around a filter is not treated by it.” It instructs that the filter is fitted with the airflow arrow pointing toward the blower, that is, in the direction the air travels. It states: “Improper installation can reduce airflow or damage the equipment.” and “Results in a building depend on the system, the airflow, and how well the filter fits its track.” The filter captures airborne particles mechanically and by electrostatic attraction, and it can act only on the air that passes through it. The company publishes no frame, gasket or bypass test for an assembly; the frame and the seal are part of the finished filter.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
What effect does filter-frame deflection have at maximum airflow?
Frame deflection at maximum airflow is a property of the finished filter's frame, which the company does not specify.
The company publishes no pleat geometry, media area, frame specification or deflection data. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. Every commercial NanoFlashing™ product is made by a manufacturing partner, in their facility, in their format, and the manufacturer and seller of a finished product are responsible for its design, manufacture, labeling, instructions, claims, sale, and warranty. The label for the NanoFlashing™ Air Filter instructs: “Do not cut, fold, trim, bend, puncture or alter the filter or its frame.” and “Do not install a filter whose media is torn, crushed, wet or visibly damaged.” The label also states a maximum face velocity, which is the upper condition the filter is to be used at or below.
Source: C-POLAR — About (https://cpolar.tech/about/) and C-POLAR — Terms of Use (https://cpolar.tech/terms/); NanoFlashing™ Air Filter label.
Reviewed on .
Sources
- C-POLAR — About
- C-POLAR — Terms of Use
- NanoFlashing™ Air Filter label
Does the unit maintain its shape during fan startup and shutdown?
Whether a unit holds its shape through fan startup and shutdown is a property of the finished filter's construction, which the company does not specify.
The company publishes no pleat geometry, media area, frame specification or deflection data. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. Every commercial NanoFlashing™ product is made by a manufacturing partner, in their facility, in their format, and the manufacturer and seller of a finished product are responsible for its design, manufacture, labeling, instructions, claims, sale, and warranty. The label for the NanoFlashing™ Air Filter instructs: “Do not cut, fold, trim, bend, puncture or alter the filter or its frame.” and “Do not install a filter whose media is torn, crushed, wet or visibly damaged.” A filter that has been crushed or visibly damaged is not to be installed, whatever caused the damage.
Source: C-POLAR — About (https://cpolar.tech/about/) and C-POLAR — Terms of Use (https://cpolar.tech/terms/); NanoFlashing™ Air Filter label.
Reviewed on .
Sources
- C-POLAR — About
- C-POLAR — Terms of Use
- NanoFlashing™ Air Filter label
Can pulsed airflow produce a different performance result from steady flow?
The company has not published a test of pulsed airflow.
The conditions tested, listed on the Validation page, are heavy dust loaded, fast air flow, used filter for 1 year, after 60 washes, after 2 years of storage, and after 60C for 64 days. The Terms of Use state: “A reported result describes only what the identified test found.” NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter, and the polarity is a positive electric charge at rest. Enquiries about a condition that is not in that list go to [email protected].
Source: C-POLAR — Validation (https://cpolar.tech/validation/), C-POLAR — Terms of Use (https://cpolar.tech/terms/) and C-POLAR — Contact (https://cpolar.tech/contact/).
Reviewed on .
All questionsHow does duct leakage affect any predicted room benefit?
Duct leakage is accounted for in the system's own commissioning and not in anything the company states, and the company does not publish a predicted room benefit.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Does a supply-air installation perform differently from a return-air installation for the same room?
Which position serves a room better is a system design question, and the company does not publish a comparison of supply-air and return-air installations.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology. NanoFlashing™ is a technology; the name, rating and sale of a product that carries it are set by that product's maker and seller.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Can a filter retrofit change the balance between supply and exhaust ventilation?
It can: the filter's resistance adds to the pressure the system's fan works against, and the label directs that it is not used where it would restrict airflow beyond the system's specification; what that means for the balance between supply and exhaust is settled by that system's own measurements, and the company does not publish a ventilation balance assessment.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Does operation at altitude change the sizing assumptions?
Air density corrections for sizing are part of the system designer's own work, and the company does not publish altitude corrections.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Can fan noise increase even if the filter itself has no moving parts?
The NanoFlashing™ filter has no fan and no moving part; its resistance adds to the pressure the fan works against, and the company publishes no noise measurement, so a change in fan noise after a filter change is measured on the system.
This site publishes no fan curve, pressure-drop curve, motor load or duct data, and it does not model a particular system. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The filter is passive. It draws no power, and it has no power supply, electrode, lamp or reservoir. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” It also states: “Improper installation can reduce airflow or damage the equipment.” C-POLAR markets a materials technology. NanoFlashing™ is a technology; the name, rating and sale of a product that carries it are set by that product's maker and seller.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use, https://cpolar.tech/terms/.
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
What usable airflow remains when the filter reaches its stated replacement condition?
The label sets the replacement point by pressure drop or by elapsed time, whichever comes first, and the airflow still delivered at that point is a property of the system the filter sits in.
The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and a replacement point set by pressure drop or by elapsed time, whichever comes first. It instructs: “Do not use where this filter would restrict airflow beyond the system's specification.” The company publishes no loaded-state airflow figure. C-POLAR markets a materials technology. NanoFlashing™ is a technology; the name, rating and sale of a product that carries it are set by that product's maker and seller.
Source: NanoFlashing™ Air Filter label; C-POLAR — Terms of Use (https://cpolar.tech/terms/).
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — Terms of Use
Can a supplier provide performance curves rather than a single nominal operating point?
A curve for a particular filter comes from the manufacturing partner who makes it, and the company publishes no performance curve.
The Validation page names Eurovent Certita Certification, Certificate No. 15.06.011, which certifies a ten-pocket bag filter at ISO ePM1 70% with an A class energy rating. Certificate No. 15.06.011 covers a ten-pocket bag filter, not a flat panel filter; a rating belongs to the construction that was tested. The one building energy measurement the company publishes is at a financial landmark in London over six months from March 2024 to September 2024, measured before and after the air handling unit filters were changed to NanoFlashing™. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. Every commercial NanoFlashing™ product is made by a manufacturing partner, in their facility, in their format. The label for the NanoFlashing™ Air Filter states a rated airflow and a maximum face velocity, and a replacement point set by pressure drop or by elapsed time, whichever comes first. Enquiries about a specific configuration go to [email protected]. Certificate No. 15.06.011 can be looked up at source in the Eurovent Certita Certification certified product directory.
Source: C-POLAR — About (https://cpolar.tech/about/), C-POLAR — Terms of Use (https://cpolar.tech/terms/) and C-POLAR — Contact (https://cpolar.tech/contact/); NanoFlashing™ Air Filter label; C-POLAR — Validation, https://cpolar.tech/validation/; Eurovent Certita Certification certified product directory, read 19 September 2026, https://www.eurovent-certification.com/.
Reviewed on .
All questionsWill it choke the airflow in my furnace the way a HEPA filter can?
The label sets the limit: “Do not use where this filter would restrict airflow beyond the system's specification.”
NanoFlashing™ is a technology; the name, rating and sale of a product that carries it are set by that product's maker and seller, and cpolar.tech publishes no HEPA rating. The label directs use only in systems that take the filter's size and run at or below its rated airflow and maximum face velocity, and replacement when the pressure drop reaches the level printed on the label or at the interval printed there, whichever comes first. This site publishes no airflow resistance figure for its panel filter on its pages.
Source: NanoFlashing™ Air Filter label; C-POLAR — About, https://cpolar.tech/about/; C-POLAR — Terms of Use, section 6, https://cpolar.tech/terms/.
Reviewed on .
Sources
- NanoFlashing™ Air Filter label
- C-POLAR — About
- C-POLAR — Terms of Use, section 6