K&N 20x25x1 Air Filter, Merv 11, Washable Air Filter, the Last Furnace Filter You Will Ever Buy, Breathe Safely at Home or in the Office (Actual Dimensions .8 x 24.6 x 19.6 inches,1 Count (Pack of 1)

I never knew until looking on Amazon that K&N made HVAC filters what an amazing product works great been using it for about 3 months now ease of cleaning the best part reusable never have to replace it just keep it clean Well worth the investment

Very easy to install and looks like great quality. I’ve only had it in for a week and it’s collected quite a bit of pet hair and dust already. It will pay for itself in 3 months. The cost for 4 air filters is around $45, so it will definitely help me save $.

I’ve tried several washable filters and none would fit the return air grill except the K&N. Perfect fit. I used cardboard filters for a while and when I would replaced them, they were always bent out of shape and allowing unfiltered air to enter the system. Great product.

Couldn’t get it to fit in my tight space that is supposed to take a 20”x20” but really a 19x19 would fit. Had to send it back but it looked like a good filter.

Reuseable filter is very sturdy and durable. As described in description. Great buy!!

This filter is a high-quality product with the ability to clean it for normal maintenance rather than throwing it away.Nice job K & N

Perfect fit, good quality.

Seems to be well made. It's probably important to note that you want to clean these once a month.

The filter really should work well. Washed it twice so far but wasn't all that dusty. Was an inch too long on the short side but was able to cut the frame and the inside filter just right. Takes some skill not recommended for everyone. Since the edge had a felt type flat lining I simply overlapped the extra and fits great. My only concern is a warning that the filter causes back pressure on the filtered side which might cause the furnace fan to overheat. Not sure if this is an issue since the furnace fan doesn't slow down at all. If a motor slows then current goes up on the windings which causes them to get warmer or even hot enough to melt. Motors are designed to run at a certain RPM and FLA but there is some tollerance. All the vents blow the same as far as I can tell. The fan will cause a slight vaccum between the fan and the filter and lesser motors will slow slightly possibly but I have no way to find that out. I have a two speed capacitor start and keep it on slow speed even when the thermostat is on fan setting. Normally that makes the motor go to high speed. I am a licenced electrician so wired the motor not to go to high speed. Put my hand on the motor squirrel cage after a cycle and it wasn't hot at all, barely warm. Right now 2 months and no problems. I'll update in a few months if AMAZON allows that sort of thing.to keep ya'll posted.😎

Buy the K&N filter cleaning spray when you buy this and depending how often you change your disposable ones (in our case it was every 3 months) we should break even after 3 years of owning this. We keep a disposable one available to use while we are cleaning the K&N filter. Rated MERV 11 so if you have allergies then this may help improve the air quality a little for you.

Nettoyage facile?????Apres un mois la nicotine disparait presque pas avec produit hertel qui est tres fort comme nettoyeur.Non recommandable…. Prefere acheter un par mois chez Canadian tire et le jetter par la suite… trop dispendieux a nettoyer et non effficace!!

Because it is high filtration it plugs up fast and needs to be cleaned often

With the current price of the flimsy paper filters it won’t be long before it pays for itself.