1 3

WaterFurnace - Made for Geothermal Units - Washable, Permanent, Electrostatic A/C Furnace Filter

WaterFurnace - Made for Geothermal Units - Washable, Permanent, Electrostatic A/C Furnace Filter

Best Filters, Warranty & Customer Service

100% Satisfaction Guarantee

60 Day No-Hassle Returns

Guaranteed to Fit
$149.99 USD
$149.99 USD

Bulk Orders Available

In stock
Do you need a custom size? >>

100% Satisfaction Guarantee

We want our customers happy! Our promise is to provide you with the best tallow products or your money back!

  • Free Shipping
  • Free 60 Day Returns
  • The Best Filters or Your Money Back!

Beyond expectations...This filter seems really well made and fit perfectly. It catches more than the disposable filters do and they are very easy to clean

R. Richardson

Need Help Finding the Right Filter?

Let us help you pick the best filter for your needs, simply email us or use our contact page. Alternatively, try our quiz

View full details

Description

Stop throwing your money away.  Our GEOTHERMAL permanent filters are designed to work with WaterFurnace Geothermal Systems.  It features minimal air resistance and extra strength to accommodate their large size. The filter uses a mill-finished aluminum frame to enclose an electrostatic media pack. The patented media pack design places two layers of  polypropylene mesh around one layer of air-laid polyester media, and these layers are surrounded by two layers of expanded metal. The pack is then corrugated which increases the material surface area thereby allowing greater dust holding capacity and efficiency at an exceptional pressure drop. The height of the pack is made to fit firmly inside the frame giving the filter strength and durability. The frame is made with mitered corners and is secured with pop-rivet(s). The frame has drain holes in three corners  The pleated design allows for 30% more air flow to reduce resistance.  The filter develops 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:  These filters are extremely popular and production takes about 3 weeks.

SPECS:

PEAK ARRESTANCE:  90%
INITIAL RESISTANCE: 0.10" WG
AIRFLOW RATE:  1200 FPM
MERV 8

Frequently Asked Questions

Yes. Our permanent filters are available in standard and custom sizes. We offer 12 different filter types to fit most needs.

Give us a call or send us an email. We can help you choose the filters that's best in your application.

Some early permanent filters were very restrictive and gave the product a bad reputation in some cases. Some HVAC contractors still tell their customers that all permanent filters are bad.

However, not all permanent filters are created equal. Like any type of filter, there is a balance between dust arrestance and air resistance. Our filters have very low air resistance.

Even our most restrictive filters are no more so than a good pleated disposable filter.

With proper maintenance, you can expect your permanent filter to last at least as long as your HVAC unit. Some of our customers have been using their filters for over 15 years and counting.

No. All of our filters are electrostatic. They have special polypropylene media layers that build a natural static charge as air passes through the filter. The charge is broken and the dust is released when the filter is cleaned.