I have a Dometic/Duo-Therm rooftop, ducted A/C-heat pump. I get SO aggravated at these silly filters that you have to cut to fit inside the return vent! The thin, floppy filter is always getting sucked up into the unit, or is pinched in the grill and sticking out where I can see it, which isn't pretty. Has anyone found an alternative which will prevent unfiltered air from escaping into my coils. I don't mind washing it once a week. But I can never get it back in right when I'm done, so I put off cleaning it longer than I ought to. Any help or advice would be appreciated. My husband suggested cutting a piece of chicken wire and seeing if we could sandwich the filter between it and the grill. That will be my next try if no one has any better suggestions here. THANKS!!!Cheryl

Do you use rubber bands between the tips that stick up? Those keep the filters in pretty well.

Four pieces of self adhesive velcro.One on each end and one on each sideStick to inside of grill..then seat filter material against the velcro.Stays in place.We buy a bag of filter material then cut up several......change out routinely.Wash/dry dirty one and then chuck them when they stretch out of shape.

By " tips", do you mean the little clips that you squeeze to open the grill? Cheryl

Velcro is a great idea, too! THANKS!

Most of the dusted grills have flat posts on the front and rear edges- I don't have one here or I would post a picture.

Air Conditioner Filters | Good Sam Community

twowee1s
Explorer
Aug 28, 2013
Craftyfox, thank you for the clarification. I'm going to try that first. Sounds like the easiest, and healthiest solution.

Cheryl
RVTravler
Explorer
Aug 28, 2013
We have been RVing for 6 years (same RV) and I have never "wash" the 4 filters. I do remove them and take them outside, sit down at a table and use a straw whisk broom to clean them. Been using the same filters for the entire 6 years.
fla-gypsy
Explorer
Aug 28, 2013
My so called, "low end" TT has velcro in the filter holder to prevent this and along with some good cutting techniques works perfectly. Should be an easy fix
craftyfox
Explorer
Aug 28, 2013
Altho the filters we cut were thicker, there wasn't any problem putting them in the A/C. They fit fine. Just be sure to use the fiberglass like ones not the more expensive pleated ones.
Old-Biscuit
Explorer III
Aug 28, 2013
Bob Vaughn wrote:
I also feel that there should be a better way. I get aggravated by washing the filter then waiting for it to dry before putting it back in.......

Buy a bag of filter material and cut out several to fit...then just swap out clean for dirty.
Then you can wash/dry as needed.no waiting
rockhillmanor
Explorer
Aug 28, 2013
Mine came with Velcro taped just on the grate. Stick filter on the velcro on the grate it, close it, and it goes no where but where it should be! :C
twowee1s
Explorer
Aug 27, 2013
Craftyfox, this is exactly the kind of answer I was hoping for! My only concern is the thickness of the furnace filter. After removing the cardboard edge, does it compress enough to get the grill back on? I'm already waiting for a new grill because the original was so cheap that one of the clips broke off. I don't want to break my new one trying to cram a thick filter in there.
craftyfox
Explorer
Aug 27, 2013
We buy the biggest cheapo furnace filter from Wally World..take the cardboard edges off and cut out several filters for the RV AC using the original one for a pattern. Have a supply on hand, take out the dirty one, throw away and replace with a clean one..job done.
tandkj
Explorer
Aug 27, 2013
Chris Bryant wrote:
Do you use rubber bands between the tips that stick up? Those keep the filters in pretty well.

YEP!! That is the best thing I have found and they are cheap.
twowee1s
Explorer
Aug 27, 2013
Me too, Bob. You'd think someone would have come up with some aftermarket product that was more like what we use at home. I'd pay a little more for something disposable. I called Dometic, and they said the floppy things were my only option.

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