how often do I change filter?
1945886
I have an asthmatic cat. During the summer with the windows open I can go a couple of months without changing. In the winter time, with the windows closed, I have to change every month.
1945887
I am a smoker and live in small apartment. I change my filter once a month.
363199
I change mine every 6 months but it depends on the hardness of your water. The filter can not be serviced. I usually recycle it with my plastics.
1856740
I returned my alen A350 after about a week of use because of the high noise level. I recall reading that filter change varies according to use and conditions. Every 6 to 12 months is the norm.
1940085
We change ours every 3 months (90 days) - We have a thing set up with Amazon to send us a filter quarterly, we have an extra on hand so after I use the one I have a new one waiting. Ours has a dial on top to tell me when to change (in case I forget)
440209
I change them a little longer that the recommended times. We use the filtered water only for cooking and related things. There are two time frames: One filter will last one year plus and the other two should be changed every 6 months. As I said we try to wait a little longer. Maybe 8 months for the two and 14- to 16 months on the one. It really depends on use and the quality of your water.
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.
159223
I change mine every 6 to 9 months. It greatly depends on how wet the conditions are, and how good the inside filter does. All depends on how bad the system enviroment is.
2095670
I find that changing that filter every 12 to 18 mos. is plenty to keep the water clean and fresh. As others have said, the company says annually, but they are making money more often that way. The filter I bought here is exactly the same except it has a lower price. What is not to love about that? (put masking tape on your filter and put the date your new one should be installed right on the filter casing.)
1485216
This filter is intended to be changed every 12 to 24 months. It is recommended that the average household change it every 12 months for optimal performance and 18 months for optimal value.
605764
We recommend changing the filters every 6 to 8 months. The replacement HAPF30 filters can be found at http://bit.ly/1Hgofjv.
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.
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.
1907972
It depends on how much waste your fish make and how much u feed them. But u can wash the filters out and use them 2 or 3 times before having to use a new one. But if you're like me and just use new ones i replace my filters about once per month. So i would say 12 times a year if you're always using new ones. Ohhh and if u do reuse them make sure u wash them with used tank water, u don't want to wash them with new water... Aka chlorinated water out of the sink... Theis will mess up you're good bacteria in your filter.
1935922
Membrane every 2 years. Filters need to be changed more often--according to the amount of use.
1802843
I have only had the unit for about 3 -4 weeks but there is a indicator on the unit that will tell you when to change filter. I do not know if this helps.
882114
I just estimate how many times I fill a day, which means for me, about every 6 months. This is based on the manufacturers recommendation for length of filter use.
2039175
There is a pre-filter that you have to change. There is an indicator to tell you when to change filters. How often depends on what setting you run. I run mine at medium 24/7, high for 1 hour after vacuuming. I change filters about every1 1/2 - 2 months. They're not expensive.