4-pack Arm & Hammer Air Filter (Various Size)

thanks, dealsea

Sure, if your house is very dusty or you have furry friends. Otherwise once or twice is good enough. //@anonymous: You need to change them every 3 months.

I change them every 5-6 months. It depends on how often you clean and how often you run the HVAC. We live in NC, where it gets hot, but not too hot, and it gets cold, but not too cold, and there are a decent stretch of time where the weather is perfect and you can leave the system off. But do whatever you feel comfortable with. I've been doing this for 15 years with no problems. //@Anonymous: You need to change them every 3 months.

You need to change them every 3 months.

Every three months //@anonymous: Once, twice, three times a year -- it also depends on how dusty your home air is. //@anonymous: You just need to change once a year. If a person owns 2 AC units, it is not a small apartment. //@anonymous: Good to live in small apartment. //@Anonymous: Got 2, enough for a year

Once, twice, three times a year -- it also depends on how dusty your home air is. //@anonymous: You just need to change once a year. If a person owns 2 AC units, it is not a small apartment. //@anonymous: Good to live in small apartment. //@Anonymous: Got 2, enough for a year

:) I bought 2 of the 20x20 and 3 of the 14x20. ~100 bucks and it'll be good for 4 changings. which for me should last 2 years. //@Anonymous: Got 2, enough for a year

You just need to change once a year. If a person owns 2 AC units, it is not a small apartment. //@anonymous: Good to live in small apartment. //@Anonymous: Got 2, enough for a year

So you are showing off that you own a giant house. Good. But are you also showing off your being rude and low? //@Anonymous: Good to live in small apartment. //@Anonymous: Got 2, enough for a year

FPR6 is not good enough, but this is cheap

got 1, thanks

Good to live in small apartment. //@Anonymous: Got 2, enough for a year

Got 2, enough for a year