We live in Minnesota, and have a two story home (forced air) built in 1986 with one of the bedrooms over the garage. I have the typical problem of the upper rooms being too cold in the winter and hot in the summer. To help with the problem, I’ve added insulation in a few spots that were bare, and have replaced a number of window seals to ensure they seal tight. These helped a small amount. I also run the fan in a circulate mode that runs that fan about 30% of the time.
After reading recent posts here about pleated filters, I removed my pleated filter for an afternoon to see if there was any difference. I could not believe how much extra air flow I saw in the upstairs bedrooms. My crude way of measuring was a piece of paper over the vent with a weight on one side. I then measured how far the paper moved away from the vent from air movement.
Now I’m wondering what to do. The pleated filters are 1 inch 20x25 Merv 11, which I used because that’s what was there when I moved in. My options seem to be:
1.Go to a spun fiberglass filter. The pleated filters seem to really help with dust, but I’m really losing air flow.
2.Possibly go to a new furnace with VS blower. My existing furnace is original and approaching 24 years old.
3.Get a better filter. Possibly a larger pleated filter would offer less resistance?
I like having the higher Merv rating for dust etc, but I seem to be compromising air flow. Is there something that would be much less restrictive but give s similar Merv rating?