is this filter for 1 or 3 months
1821799
We easily get 3 months from each filter. If you use A/C 24/7 I'd say every 2 months.
1821800
The specs on Amazon really don't say, do they? However, pleated filters are generally expected to last 3 mo. vs. the other variety that looks like open fiberglass. Anyway, that's the time interval I change them out and they work fine. Of course, the dustiness of your environment will impact a lot. Suggest you inspect periodically. When they begin to look dirty, it's time to change.
1821801
Depends on the room it's in, our filters get dirtier in the rooms that are used more often :]
1821802
We have 2000 sq. ft. all on one floor with one return in the hall ceiling. Only using these filters less than a year. Looking at the filter is good advice. I have changed it every 3-4 months although it still looks like it could go longer, but I change it to "keep the peace" in the family. Heat runs all winter, and A/C all summer. Spring and Fall use is intermittent.
1821803
I have a 2000 sq ft home and don't use the forced air much, maybe 1 hour or so a day. I change mine every 3-4 months. Please see the answer from the filter salesman in reviews.
1403283
I've had mine for two years & haven't replaced the filter yet. So, I don't know. It depends on how much you use it I guess.
1857863
I have a indicator light on my unit, it lights up when needs to be cleaned, I say I replace the filter every 3 months
537763
This filter controlled odors for about 3 months. Once the carbon was depleted, (no longer controlled odor) it had to to be replaced. No need to clean, it either works or it doesn't.
803283
I just purchased this item so don't know how long it will last. The instruction manual states the filter should last 6 to 9 months. I would guess that depends on usage. I use mine about 2 to 3 times a week and for a short period of time.
1604806
Every 3 months ....FYI: the filter is a bit smaller then what is listed so they may slide around but work fine.
2043182
The best practice is to change it every 8 to 12 months. Even flowing strongly after that time filter could have lost part of its filtering properties.
1921210
I believe they suggest every 3-4 months...I purchased the filters online at amazon actually.
714249
I can't tell you how long it lasts since I am still using it. Be sure and get the pre-filter which will keep most of the dirt off of this filter.
985491
Depending on the amount of use, your filters should last 3-6 months easily. You can greatly extend the life of the filter by using a small hand vacuum or dust blower to clean the filter regularly.
793118
Me personally it is 4 to 6 months depending on how much the furnace or a/c runs and this winter it ran a lot. It's a good filter and I bought another one already.
1544113
The manufacture recommends replacing the filter every 6 months period. Personally, I replace the filter every 3 to 4 months. For your information, most water filter manufacturers including 3M recommends replacing filter every 3 months.
1322923
From amazon I think I've read 1 year, from another website that sells the same filter I've read 1-2 I guess it depends how much you use it. Hope this helps!
1931174
The NSA 100 water filter is good for 3 years from the time of installation.
745342
The company that installed my new system said that this filter would last one year. But when they came out to do an inspection after one year, the guy said that I should have changed the filter earlier. I now change the filter every six months. So far, that seems to be about the right amount of time.
1049042
On the old models I changed every 30 days. This one, with filter A, says it will last 3-6 months. I haven't had this one long enough to know for sure.
1718245
Eventually the filter will need to be replaced. As long as you take care of it it last a long time.