How often do you have to change filters
1324193
It really depends on your usage. I change them every 12 months, or less if I notice a quality change. The manufactures website has a fact sheet that says how many gallons they are rated for.
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.
1348362
It depends on how often you run the unit and how much dust/allergens it's filtering out of the air. If it is always running then generally the filter should be replaced every 6-8 months.
253431
As recommended by Friis, you should change the valve filter every 60 days. The unit will include 6 replacement valve filters.
24996
you have to replace filter once awhile. Depends on your air quality. I do it every 6 - 8 months. Just buy the matching homeimage filter on Amazon.
1177110
I have gotten away with not changing it for about two months. BUT that required me to keep the unit dust - free and clean on the inside as well s the outside. It also depends on how often you' re using it. If you use it constantly. then you will have to plan on changing the filter every month for sure.
526255
I believe it depends on how many fish you have and how quickly the tank get dirty. Personally i just change it once a month to be safe.I have a 55 gallon tank with some tetras, two angel fish, two pelcos, and a albino corry(Total: 9 fish). I only change once a month, even when i had 13 fish i still changed the filter once a month.I never had any issues with the fish and my water always passed the weekly tests.
501946
I generally change mine every 3-5 years, but it all depends on the level of pre-filtration, the level of chlorine passing through the membrane, the temperature of the water. I use a .5 or 1 Micron Carbon Block pre-filter and change it every 6 months. TFC Membranes have a very low tolerance for chlorine, so if you are not using a quality Carbon Block pre-filter, the membrane will not last as long.
1201867
The manufacturer suggests changing the filter every six months. I waited for a year. A light will come on to let you know the filters need to be changed. After you change them, you will need to reset the light.
547381
It depends on your use but I try to change once a year. I have gone much longer though and have not noticed any degradation in the taste of the water. The filters really make a difference.
66374
Prefilter: Directions say every 90 days. I run my filter 24/7 and need to change the pre-filter every 60 days. HEPA filter is supposed to last 1 year. I change mine more often due to severe allergies and chemical/fragrance sensitivities; mostly due to scent.
1802839
The filter can be changed either 6 months or a year, but you must remove the front panel and vacuum off any debris about every 2 months, depending on how dirty it gets will determine how often you have to do this.
1064808
I've owned a unit about two years. I replaced the filter after year 1 and just replaced it the second time. The unit seemed to work OK, but the filter does get a little "grungy". I'd say replace at least once a year (I only run the unit during the winter and early Spring months-November to April)
793116
I would say it depends on the conditions at your home. We live up in the mountains where it is very dusty, so we check it at least once a month. We'll change it based on the amount of dust on the filter paper. We can generally go a couple of months before having to change it out.
2000405
How often to change the filter is depended on the air quality in your house/room and how often the filter is on. You can tell by looking at the paper side of the filter. When the filter is getting "dark" grayish black color, the filter is near end of its life. Some people change filter every three, six, or nine months. That could be wasteful. I always inspect the filter and then change it as needed.
1862267
Hi . I usually change the filter ones a month when you do the water changes but don't do it together first hoy can change the filter and wait about a week and then do the water change
282068
I change the filter for our pooch about once per month. Depends on how hard the water is where you live. If you use filtered water it should last much longer.