I learned this lesson the hard way my first winter in the house. Figured I’d just swap the filter “when it looked dirty,” which apparently isn’t a great method. Ended up with the furnace shutting off one night—right in the middle of a cold snap, of course. The tech who came out showed me the filter and honestly, I was embarrassed at how gross it was. He said it was basically suffocating the system.
Now I set calendar reminders every couple months. It’s not exactly fun, but it beats waking up to a freezing house. I did try those thicker filters once because they sounded like a good idea, but my furnace got really noisy and seemed to struggle more, so I switched back to what the manual recommended. Guess sometimes “more” isn’t better.
Anyway, swapping filters is way easier than dealing with repairs or emergency calls. Lesson learned...
Funny, I actually had the opposite experience with the thicker filters. My furnace didn’t seem to mind them, but I did notice my energy bill crept up a bit. I get what you mean about “more” not always being better, though.
I guess every setup’s a little different. I still check mine monthly, but sometimes it looks clean for ages and I wonder if I’m just tossing money away by swapping it too soon...“He said it was basically suffocating the system.”
I’ve wondered the same thing about changing them too soon. I had a tech tell me once that a “too clean” filter isn’t really a thing, but I’m not so sure.
Ever tried just vacuuming the filter instead of replacing it right away? I’ve done that a couple times when it looked barely used, but I’m not sure if it’s actually helping or just making me feel better.“sometimes it looks clean for ages and I wonder if I’m just tossing money away by swapping it too soon...”
“sometimes it looks clean for ages and I wonder if I’m just tossing money away by swapping it too soon...”
Honestly, I’ve tried vacuuming the filters before, but I wouldn’t count on it doing much. The fine dust gets embedded in there, and a quick vacuum just doesn’t cut it. I get not wanting to waste cash, but running with a clogged filter can cost you more in repairs or higher bills. If it looks clean and you know your place isn’t super dusty, stretch it a bit—otherwise, just swap it. Filters are cheaper than fixing a burnt-out blower motor.
Yeah, I hear you—filters aren’t exactly cheap if you’re swapping them out every month, especially when they still look decent. I’ve tried vacuuming too, but honestly, I don’t think it really gets the job done either. The dust seems to stick in there no matter what. I usually stretch mine a bit longer if the house has been pretty clean, but if I start seeing more dust around or the air feels stuffy, I just bite the bullet and change it. I figure it’s better than risking a big repair bill down the line... learned that the hard way once.