About often does the hepa filter have to be replaced. They are very expensive! Whirlpool AP51030k
507318
I run it 24/7 ~I vacuum the carbon pre-filter once a week and never have to change the hepafilter
507319
My HEPA filter just recently needed to be replaced after eight years of use. I bought it back in 2006. I don't use it everyday - mainly during pollen season (here it lasts 3 months a year, but doesn't always bother me), during forest fires when it is smokey and various other uses as needed.
507320
My HEPA filter is about half used in 14 months. I replaced the fairly inexpensive carbon pre-filter once at 13 months. This product works well, and I don't mind the cost of the filters. The unit has two indicators that tell you when to change each of the filters.Bruce in Texas, retired engineer
507321
I run my unit 24 hours a day on turbo with 8 hours of sleep mode at night. I replace the carbon filters about every 4 months and I just replaced the HEPA filter at about 1.5 years. In my opinion it is worth the cost. The air purifier works well. Kim
1818983
Our household and environs are so dusty and polluted that I need to check the pre-filters monthly and the HEPAs twice yearly. Otherwise they become so choked with filth that they become ineffective. So while the 3 & 12 month cycles are recommended your mileage may vary.
589325
I habe not bought replacement filters yet, but I would contact the 800 number for your hepa filter. Or do amazon search with model number and "replacement filter."
45949
Replace the white filter when it blackens. I have to replace it about every 3 months
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)
1496380
There are two filters. The first filter is a thin mesh that you could vacuum off and then wash by hand. I run my unit 24/7 and the mesh filter needs changing several times a year. The second filter is a HEPA filter and it's not washable. I've changed it once after one year of use and these filters are not cheap.
2056094
The S8590 has only the HEPA filter and the dirt collection bag. Because I have had this only a few months, I cannot speak as to frequency of replacement, but the company indicates the HEPA will last about a year.
1348363
i bought mine in january 2013. my air filter has the digital display. if that is the one you have it will show you an indicator on the display that says "hepa filter reset". mine came up after 6 months of 24/7 use. i replaced my filter at that point. prior to that, i would vacuum the whole unit and the charcoal side of the filter every two weeks. i hope this helped. =)
605764
We recommend changing the filters every 6 to 8 months. The replacement HAPF30 filters can be found at http://bit.ly/1Hgofjv.
1496379
No. Sorry, they say under normal conditions, you should replace the pre-filter every three months, and the HEPA filter annually.
472072
I have another Holmes and bought this one for a 2nd room... I only change the HEPA filters maybe 1ce a year, but I vacuum the Carbon filter weekly and replace them every quarter or 6 months.
1019912
The Whirlpool E-Console APR45130L comes with the Whirlpool True HEPA filter (Usually change every 12 months depending on usage and the air quality in your home) and it also comes with the Carbon pre-filter that removes odors and catches larger particles like pet hair. The Pre-filter usually needs to be changed every 3-6months and using the pre-filters properly extends the life of the HEPA filter. The purifier also has filter meters that will tell you when it is time to replace the filters. Leave it your own visual check of the filters to tell you when it is time to replace! Hope this helps.
1603407
You have to buy a new one, but they last 18 months at least and are pretty inexpensive. You can take the filter out to clean it whenever the red indicator light on the air cleaner goes on. I just wipe it clean with a slightly damp rag. But after 18 months or so, the dirt gets inside the folds of the filter and the machine doesn't work as well as it could, so that's when you need the replacement filter. I've had this air cleaner since 2012 and have only bought one air filter replacement so far.
1201868
I bought 2. One has already died, the second one is still works, and I replaced the filter twice in about a year. The filters are expensive to replace so I decided not to a replace a third time. I bought a new Hunter air purifier that has a prefilter and the filter inside I can vacuum.
242750
its reusable filter wash it off with water, if you have it running 24/7 i would check it once a month with your HVAC filter as it can get full of dust and kill the unit faster.
1337846
ive had mine for around 6 mo n the hepa filter i may have replaced once but i have replaced the prefilter 2-3 times
1818984
This is the manufacturer's recommendation: "Before operating the air purifier, record the date of installation on the HEPA filter. Under normal conditions, the HEPA filter should be replaced annually, and the pre-filter should be replaced every 3 months." That is directly from the manual. I have had my air purifier for about 6 months and have only changed the pre-filter once. I vacuum if off about every 2 weeks. Your situation might be different depending on how must dust is being filtered.