Washable Furnace Filters

[jaydee325]

I have a geothermal heat pump. The air filters are an odd size and pricey!

I ran across a filter in the size I need that is washable. Info says wash every 6 to 8 weeks and specifically mentions they are suitable for a geothermal heat pump.

Has anyone had experience with the washable furnace filters and what was your experiences?

 

[oosik]

I see that K&N makes washable/reuseable home air conditioning/etc filters. I've got K&N engine air filter and cabin air filter on my Power Wagon. I would expect that these two filters will last 10+ years with appropriate maintenance. K&N makes exceptionally good filters. I don't have a furnace so no experience there.

It might help if you mention the brand you are looking at ...........

 

[lman]

I've got a geothermal and buy filters online in a box containing 6. Cheaper that way. I only use 1 per year. I don't know anything about the washable filters.

 

[Roadworthy]

You don't specify a brand on the washable filters you found. I have used washable filters on a conventional electric furnace with no issues. I just rinse with a garden hose - good as new.

 

[5030]

K&N filters = dirty air.

 

[cqaigy2]

K&N filters = dirty air.

At least for a vehicle. Not sure about their furnace filters.

 

[spitter]

What about one of those elecronic filters.:drink:

 

[jaydee325]

Here is the filter I ran across. This is the exact size I need. Unfortunately, it is out of stock right now.

Again, any experience with this type of filter is what I'm looking for.

29-1/2 x 31-1/2 x 2 Geothermal Filter | 29.5x31.5x2 Waterfurnace Bryant Carrier

 

[s219]

I buy them in bulk, usually costs $12-20 each for my geo unit (which takes 28x28x1 filters) and lasts a year. Prior to that I was using two 14x28 (standard size) filters taped side by side, which is actually how the OEM filter was made and how many larger or custom filters are made. You might want to explore if you can construct the filter that way using something off-the-shelf.

The website furnacefilterwarehouse.com used to be a good source but I see they were bought by brookaire.com and I don't have experience buying from them.

 

[rswyan]

We have a washable filter on our gas, forced air furnace that is probably 20 years old which has held up and works well.

Not sure of the brand (has a blue label sticker with white lettering), has an aluminum frame with a couple different kinds of media in it.

Likely bought it from either Home Depot or Lowes.

I'd say that their cleaning directions are spot on - ours catches a lot of dirt and I was cautioned by a friend who is in HVAC that the one we have at least, passes less air than a typical, normal furnace filter, so you really don't want to let them get clogged up.

I suppose lack of airflow could cause the heat exchanger to overheat.