28x30x2 Geothermal Filters for AC and Furnace Systems

Yes, HVAC filters should fit the filter slot as precisely as possible to prevent unfiltered air from bypassing the media around the edges. ECOairflow's Model 2300 is available in all industry-standard sizes, including oversize, odd, and fully custom dimensions, ensuring a proper fit for geothermal and commercial AC or furnace systems.

Geothermal HVAC systems operating at high face velocities (500 FPM or more) benefit from MERV 13 to MERV 16 rated filters. ECOairflow's Model 2300 and M-Series provide MERV 14–16 performance with a dramatically lower pressure drop than conventional pleated or bag filters, protecting the system while maximizing energy efficiency.

ECOairflow's 2-inch commercial filters deliver a pressure drop of just 0.13 in.w.c. at 300 FPM and 0.27 in.w.c. at 500 FPM for the Dynamo Model 2300, and 0.09–0.18 in.w.c. at 300 FPM for the M-Series—significantly lower than the 0.6–1.2 in.w.g. typical of traditional MERV 8 plus MERV 14 bag filter combinations.

Yes. ECOairflow's 28x30x2 filters are engineered for commercial geothermal air handlers and high-face-velocity systems. The permanent aluminum frame is a one-time investment, and the replaceable pad system is compatible with existing Model 2300 frames. A Cabinet Conversion Kit is also available for legacy electronic air cleaner retrofits.

Absolutely. ECOairflow filters are UL 2998 Zero Ozone Certified, emitting below 0.0005 ppm—well under the 0.005 ppm regulatory threshold. They are recommended by the US CDC and EPA for ozone safety and are safe for hospitals, schools, offices, and any occupied commercial or healthcare environment.

Yes. ECOairflow's 28x30x2 commercial geothermal filters qualify for LEED EQ credits and are compliant with the WELL Building Standard, International Living Future Institute (ILFI), National Green Building Standard (NGBS), and Passivehaus requirements. ASHRAE 62.1 and 90.1 compliance documentation is available upon request for specifying engineers.