28x30x1 Geothermal Filters for Heat Pump Systems

MERV 11 or MERV 12 is recommended for geothermal heat pump systems. These ratings provide excellent particulate capture — including allergens, viruses, and fine particles — while maintaining a low pressure drop that protects your heat pump's compressor and blower motor from unnecessary strain.

Standard high-MERV pleated filters can significantly restrict airflow and stress heat pump components. ECOairflow's electronic air cleaners use Electronic Polarization Technology to achieve MERV 11–12 performance with pressure drops as low as 0.11–0.18 in.w.c., far lower than comparable pleated filters, protecting your heat pump's efficiency.

ECOairflow recommends replacing the glass-fiber collector pads every 3 months for optimal filtration performance. The permanent metal housing is a one-time purchase — only the low-cost pad requires periodic replacement. ECOairflow offers an email reminder service at ecoairflow.com/email-reminders to help you stay on schedule.

No. All ECOairflow residential electronic air cleaners are ETL-certified to the UL 2998 Zero Ozone Verification standard and exceed US FDA, EPA, NIOSH, CARB, and OSHA ozone emission limits. They are safe for use in occupied homes, including households with children, pets, asthma sufferers, and respiratory sensitivities.

Yes. ECOairflow's Electronic Polarization Technology captures ultrafine particles in the PM0.1 range, including black carbon from wildfire smoke, organic carbon from forest fires, and non-exhaust automotive particulates. This makes them especially effective for households in Western US smoke-affected regions or near major roadways.

ECOairflow units connect to your HVAC air handler's standard 24V floating input and installation by a qualified HVAC contractor is recommended for initial setup. Once installed, homeowners can replace the collector pads themselves without tools or a service call. ECOairflow's HVAC contractor network covers the USA and Canada.