How often should you be changing this?
1410959
I change mine every year. I change my wife's every six months. The activated charcoal no longer functions after a while. If you can afford it, change it is soon as you start smelling the musty A/C odor, which is approximately every 8 to 10,000 miles for us.
1410960
I try to remember to change mine every couple of years buts it's easy to forget. The dealer wants a ridiculous price for the replacement filter and installation. You have to remove the glove box to get to it. I did my own, took 15 mins. I found a video on uTube how to take out the glove box.
425639
It takes double A bateries, yes you have to change them so often depending on how long you run it.
1463460
There's not one answer to this question. It depends on the environment you live in and possibly the allergy sensitivities of people in the home. It's good to check them every month or so. We live inside a hardwood forest and it seems to me, we have to change ours about every 3 months or so. You can tell when they need changing, just by looking at them. If your environment has a lot of dust or other particles in it, you may need to change it every month. On the other hand, you might be able to go six months without changing it. Hope that helps some.
1499268
Depending on how long you keep it on and use it. I never changed my,and I had my in year.
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.
2229296
I would treat it as if it were a toothbrush and change it every 3 months. I bought 3, one for milk, one for juice, and one for water. The milk and juice ones I change every 11/2 month's.
625073
I don't believe there's any limit to how often you can use it; you can use it every day if you like. However I think once a week may be okay. I usually leave it on till I get sick of it; but generally I'd say half an hour would be sufficient.
985495
I think they recommend once a month. It depends on how frequently you use it.
1935917
The only other reason to change more frequently is if microbial contamination is a concern, I put a UV light treatment unit following my RO system to help fix any problems encountered here. Now I have a UV light to change once per year and another filter to change once every 6 months in addition to RO filters and membrane service intervals.
1810761
I change mine every two months. I do friend water changes as I have two fire bellied toads and crickets and meal worms always seem to get in the water. I also check the miter once a week as debrise clogs the intake. But I love this product no problems with it at all. You can also use bio bags they are a little cheaper.
268142
We usually change it after 2-3 times max with our little one since it's so small anyway and there is usually ample room to go in another spot. If you feel there's not enough room for him to go again, then I would change it.
253432
I've been changing mine every two months. Honestly not sure how often they are supposed to be changed.
2247771
My wife and I only have to change it every 6 months, I'd say 4-6 months would be your average. Works great BTW
128259
I've changed mine when needed, around 6-12 months, and it does make a difference.
1689122
It depends on the weather The hotter it gets the more often it needs to be changed When it is in the 70 and 80 30 days is just fine but when it gets above 90 for a extended time change every 15 to 20 days.
1884804
I have changed mine about once every 3 months however I'm using the same fragrance on each pad per fan but I don't run mine every day, probably about 3-4 days a week for about 8hrs each time. If the pad starts getting dirty then change more often because the fan is pulling up air through the bottom and if pad is dirty the fan doesn't work as well. If you are refilling the same fragrance oil onto pad every 15-30 days then you probably will have to change pads during a 90 - 120 day period because after awhile the pad gets sticky. I use pure essential oils since they last longer and have a more pure scent. Love my fans!
146144
I change when it gets too old, worn and tear. But I would rather change fliters every 6 months to a year. It depends. I have 4 cats and it gets to use a lot. So you know it depends on what your situation is.