For Custom Sizes (sizes not in drop-down menu above) - Click Below
You invested in that geothermal system to save money and now you find out the filters cost an arm and a leg. Stop throwing your money away. Our GEOTHERMAL permanent filters are designed to work with WaterFurnace, Bryant, Carrier, ClimateMaster, Bosch, Florida Heat Pump, GeoFinity & others. They feature minimal air resistance and extra strength to accommodate their large size. The 5-layers of Polypro with Polyurethane foam media generate an electrostatic charge that acts like a dust and allergen magnet. These filters are drop-in replacements for the expensive disposable filters. No retro-fitting and no electricity needed. You will be impressed with the quality and performance of this great filter. Please note that these filters have a nominal and an exact (or actual) size. For example, your filter may have 30x36x1 written on it. However, when you measure the filter you find it is actually 29-1/2 x 35-3/4 x 1 inches. So, we recommend that you physically measure your current filter and then find that size in the drop-down menu above. If your size is not listed, please choose the Custom option and enter the size you need in the box. We can make any size in 1/8 inch increments (W and L).
PLEASE NOTE: These filters are extremely popular and production takes about 3 weeks.
PEAK ARRESTANCE: 90%
INITIAL RESISTANCE: 0.10" WG
AIRFLOW RATE: 1200 FPM
GEOTHERMAL - Made for Geothermal Units - Washable, Permanent, Electrostatic A/C Furnace Filter
Made super good delivery was great just remember that they are made to order so takes a little while to get them
Great build on this permanent filter.
Haven’t received the replacement correct size yet
It looks good and I think it would work if I could get it in. It’s about 1/16 of an inch to tall. I’m trying to grind it down a hair to see if I can get it in.