Question about Holmes Products HAP422-UC Air Purifier

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Hepa filter I have a redc light on the top of my filter unit. it is right next to the green ionizer light. what does that mean and how do I fix it?

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Re: hepa filter

The red light indicates a plugged filter. Replace the filters plug the machine in and get a paper clip. Streighten out the clip and put it through the tiny hole in the top. You'll feel it push a switch that will give a click you can feel. Keep holding the clip wire down for several seconds. When the red flashes remove the clip wire. The light will stay off if the filter is clean.

Posted on Sep 01, 2007

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I have been looking to buy an air purifier and people keep telling me to get a HEPA. What does this mean?

HEPA is a type of air purifier. It stands for high-efficiency particulate air. To qualify as a HEPA filter by government standards the filter must remove 99.7% of all particles larger than 0.3 micrometers from the air. The following site lists the top 10 HEPA purifiers available online -

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I need a filter for Amcor Ficus Tree Air purifier

If the activated charcoal filter, take your old one apart and trim down a larger on from a competitve machine to fit yours. The same if it is a HEPA filter you want to change as well.

Otherwise metal and plastic filters can be washed. Spray with a grease cutter like 409, which will also lightly etch the metal without reacting with the plastic.

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Where can I get a replacement filter for bap4010?

According to their website:
PERMAtech Permanent HEPA Type filter traps 99 % of all allergens and dust down to 1.0 micron.
PERMAtech Permanent Filter Never Needs Replacement!
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Oct 10, 2011 | Bionaire PERMAtech BAP4010-U Air Purifier

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I had a honeywell hepa air purifier 50250 given to me as a gift with no owners manual! Is there somewhere I can get one? also, there is buttons on the top, one saying check filter and the other saying pre...

The Intelli-Check™ Filter Monitors will indicate replacement of the pre-filter and the

HEPA filter. Depending upon your individual usage (environment and hours used),

you may need to check and replace the filters more or less frequently.

To check Expected Filter Life Usage

When the unit is turned on, quickly press the appropriate filter monitor button. The

pre-filter light will flash up to 3 times and the HEPA filter light will flash up to 4 times,

depending upon how much expected filter life has been used.


1 flash = from new, up to 1/3 expected life used up

2 flashes = between 1/3 and 2/3 expected life used up

3 flashes = between 2/3 and all of expected life used up

Remains on = time to check/replace pre-filter


1 flash = from new, up to 1/4 expected life used up

2 flashes = between 1/4 and 1/2 expected life used up

3 flashes = between 1/2 and 3/4 expected life used up

4 flashes = between 3/4 and all of expected life used up

Remains on = time to check/replace HEPA filter

To RESET Filter Monitor

When the filter monitor light remains on, it is time to check/replace the filter and reset

the filter monitor, if needed. With the unit powered on, press and hold the appropriate

filter monitor button down for approximately 5 seconds until the light turns off.
Depending upon your individual usage (environment and hours
Page 6:

Mar 29, 2011 | Kaz Honeywell Hepa Air Cleaner (50250) Air...

1 Answer

Red light on...

the unit probably needs to be reset. cause what's happening is that it's not recognizing that the filters are clean. there should be a tiny pin hole at the top of the unit. when the unit is on you need to put a small needle in there and hold for about 5 seconds and the unit should reset. if that doesn't work please please let me know and i will see what else we can do.

Mar 12, 2009 | Holmes Products HAP725-U Air Purifier

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Unit 8 mos. old and now makes loud, awful noise

you have had the thing for 8 mos try cleaning the hepa filter with a vacuum use the brush type attchment or u might have defective filters go to or contact honeywell

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Users Manual for Kenmore HEPA Air Cleaner Model No 85244

I have an kenmore air purifier and cannot locate where to find a replacement filter or manual for it? Can you help. It is Model # D42M32957

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Lost amnual

the lights are the ionizer light, the filter indicator light which is the light that will come on when the filters need to be changed, ionizer control button, the speed control and the power light.

Dec 04, 2007 | Bionaire BAP825-U Air Purifier

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Hunter 730 carbon pre-filter replacement orange light

Filter lights on your Air Purifier One of the best things about your IQAir Air Purifier is that it has warning lights to tell you when to change the prefilter, gas or hepa filters. Of course how long they last depends on your pattern of usage. For the initial 80% of the filter life the control panel will display a green light next to the corresponding filter on the outline of the unit. When the orange light goes on it does not mean that the filter needs to be replaced immediately but that there is 20% of useful life left. IQAir gives you plenty of time and the machine will tell you how many hours you have left. Once the number of hours gets to within a few hours remaining the orange light will then change to red. It is at this time you should change the filter. If you forget to change it and there are no hours left the hours will go into the negative displaying how many hours you have gone over and the red light will change to a flashing red light.

Just in case you have lost the manual like one of our customers, this is how you reset the filter lights:
1. Press the menu button ( 7 times) until you get to where the display says new filter.
2. Press the enter button and hold it down for 3 seconds and a number 1 will be flashing after the words new filter on the display. This flashing number is so you can enter which filter you have changed. Filter number 1 is the pre-filter, filter number 2 is the V-5 gas filter, and filter number 3 is the Hepa filter.
3. You change the number for the filter by pressing the up arrow button.
4. Once you reach the correct filter number you press the enter button and the control panel will display a question mark after the words new filter on the display. Below this it will say, E = Yes M = Cancel. If you wish to cancel the entry so it does not reset a new filter life, simply press the Menu button.
5. If you want it to reset the filter life for the changed filter, simply press the Enter button. Once this is done, the filter light will change back to the green light, which will show the filter has been changed. If you go to the remaining filter life on the control panel for the filter number you just changed, you will now see the remaining life of the filter in hours has been reset.

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    Red filter indicator light

    Hi Linda - there is a "reset" hole - you have to stick a pin or a paper clip in the hole when you change the HEPA filter - I just found this out myself! It does work. Mine didn't work right away, but it did end up resetting and went back to green after a few moments. I think this happened to me last time. The filters are really expensive, but you can get them at Walmart. If you need more information, email me at and I'll tell you what model filter, etc.

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