Quote:
Originally Posted by kpd3062
I haven't purchased in TV yet. All these prices seem high compared to the 1" filters that I have used in the past. I would change them every month or two. Are these thicker more expensive filters changed less frequently?
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I use the Filtrete 1550 20x20x4. I have rather severe allergies so I change out my filter monthly. Yes, I know, that’s overkill but I “feel” better with a fresh filter monthly. I have no pets and don’t smoke, and assuming you don’t either, I still wouldn’t go beyond 90 days. Everyone has his or her own routine. You will figure out what is best for you.