1” filters should have 20 or a few more. 4” filters I think have 6.
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I don't mean to 89coupe y'all but I run a 20x26x5.
Was previously using some 3M Filtrete 1900MPR (20x25x1), but recently purchased the Kirkland brand ones which are 2200MPR. I initially assumed the higher MPR=better, but after doing some research, a lot of people say it works the furnace motor too hard due to restricting the air flow.
Might save these 2200MPR's for the summer when the furnace isn't running much, and get something with better air flow for winter..?
Wondering what you guys are using/recommend?
I buy the cheapest Merv8 I can find in a box of 6 on Amazon as I change them out every 3-5 months.
Using the cheapest fibreglass ones. Swapped out every 30 days. Furnace tech said to use cheapest and swap more often
I just returned my Kirkland 2200's before it tripped my furnace. There is no way that's not choking the fan and a huge issue waiting to happen.
When I first moved in, I tripped the fan (choked) with one of the fancier 3M in less than 60 days, but I think that was due to previous owners and an anomaly.
I use cheap cheap ones in winter and change every month. I use something around a MERV8 or higher depending on what's on sale the rest of the year. I rarely let them go past one month.
Whatever the 3M ones they sell at Costco?
Agree, buy cheap change often. I change ours every month, dusty house with dog hair. I just get the cheap paper ones.
Yea you will definitely notice the furnace running less - esp. when cold outside - with the less restrictive filters.
For summer I use washable filters, or when its really smoky outside, the expensive ones (and clean the air in the home using circ. air).
The problem is the 1” filter. Spend the money for a 4 or 5” filter housing and keep a high quality filter in it year round.
MERV 8 pleated on a regular basis (I find the super cheap fiberglass ones bend/warp quite a bit).
I ordered a bunch of 3M MPR1500's when it was $20 for a 6 pack and I've been using them in the summers and smoky season.
Interesting, I have never given this any thought. My furnace uses a 20x25x5" filter. I think I currently have a Honeywell one from Home Depot. They are only ~$40 each. I usually change every 3 months. I have one of those variable speed furnaces so it is always on a bit but I never considered that the type of filter might lower the life of the furnace. I am sure it can't make much of a difference...
It really does boggle the mind how many builders “save space” with 1” filters.
The cheapest, highest flow ones I can possibly find. Usually 3-packs are under $10 and it's better for your furnace. That being said we don't have pets or bad allergies, so I could see scenarios where you might rather have a better filter than be nice to your furnace.
Locally made BGE filters. Decent price, decent filter. Started when someone else mentioned them on Beyond a few years ago.
*merged 2021 furnace filter thread w/ last years MEGA thread.*
I am using https://www.homedepot.ca/product/air...3-8/1001040533