Tip & How-To about Air Purifiers

Air Purifier Cleaning

You bought that air purifier to help to clean the air in your home. However you have forgotten about it and now you expect it to still clean, when all of the cleaning surfaces and the filter that catches the big chunks are completely used up and covered with dust and dirt.

Here is what you need to do on a regular, like monthly, basis to keep it working well.

  1. If your unit has a filter or pre-filter pull it out and wash it gently in some warm soapy water. If the filter is a throw away one then place it in a plastic bag and dispose of it. Be careful not to throw it away before you make sure you know what to get to replace it. You may need the old one for comparison when purchasing a new one. Also take note of how you removed it and the direction of the air flow. Some of the filters are made to have the air flow in a certain direction. The filter is often located in the back side at the bottom of the unit.
  2. Take apart everything that you can on the air purifier and clean all the pieces with a moist cloth. You may need to take toothpick or something small to clean out the small grooves and crevices in the unit.
  3. Leave everything dry completely before reassembling the unit. This may take quite a while for some of the filter media. A few hours is not uncommon, be patient.

You now will have your air purifier working in top condition again

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1 Answer

Is the air coming out the front supposed to be angled to the right or is is supposed to pour out the entire front?

Hi Allan,
Here's the Holmes service/support page. I am certain they can answer the questions regarding your air purifier.

May 07, 2014 | Holmes HAP1702-TU Allergen Air Purifier -...

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Fresh Air: Replace the plate

I found this link to get parts for it:


Ecoquest can support the product for you as well regardless of who you bought it from.

Oct 06, 2008 | Ecoquest Fresh Air Air Purifier

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Cleaning Fresh air 2.1

I can help you get a copy of the manual. I can either fax or email it to you. If you email me, I can send you a copy. My email is stevelam at ecobusiness.com.

Feb 12, 2010 | Ecoquest Fresh Air Air Purifier

1 Answer

is there a better Air Purifier than the defender

Hi lahgolf,

I used to work with a Filter Queen distributor, have the vacuum I bought when I was there (and another I bought on eBay) - - excellent machines, so I would expect the Defender to be a similarly good-quality machine.

I also like the Alpine/EcoQuest purifiers that use a combination of ionization and oxidation. I realize that the HMI (Defender) manufacturer warns against these types of purifiers (not unexpected given that they are the competition). What HMI doesn't tell you is that clean, unpolluted outdoor air contains a low background level of O3 (ozone, aka activated oxygen), ranging from 15-40 ppb (thats parts-per-billion - very small amounts). It is this level that the purifier should used to approximate, not the much higher levels that are associated with air pollution and physical ill-effects (normally registered at levels over 100 ppb). Sunlight hitting O2 in the air causes low levels of O3 to be produced; sunlight hitting smog causes higher levels that are associated with pollution and health reactions to O3; it's the O3 that also acts to oxidize/break down air pollution naturally. The O3 isn't a pollutant in itself; it is a reaction to pollution, and an easy way to gauge the level of pollution because of the known chemistry of this reaction.

Full disclosure: I am, and have been an EcoQuest dealer since shortly after I parted ways with HMI in 1995. I can't sell you anything without violating FixYa's terms and conditions, so we won't go there.

My recommendation as someone with lifelong dust allergies (one reason I got into the business) is that the optimal solution is a combination of active high-performance filtration in a vacuuming system, and active ionization (induces a static charge on particulate air pollution, much like throwing a magnet into a box of loose hardware), causing them to stick together and fall out of the air, and also be more effectively trapped by high-performance filters such as found in the Defender or the vacuum cleaning system. My only reservation about the Defender is that it only cleans one room effectively; the EcoQuest units can generate ionization throughout an entire house (typcially 50-60' radius through walls). I'd expect the vacuum system to be used throughout your home.

One other thing - filters are rated by the weight of what they capture, not particle count. If all the particulate pollution was represented by a bucket filled with everything from fist-sized rocks, to gravel, to marbles, pebbles and fine sand, a filter that trapped 99.7% of that dirt would be getting the big stuff, not the little sand particles, yet these are the most easily inhaled deep into your lungs where they can be the most detrmental. This is why I believe ionization to be so important - - it clumps the little particles together into bigger ones that can be filtered effectively.

If I can be of further assistance, or if you have questions, please let me know before rating me.

If this solves the issue, please rate it accordingly. My goal is to earn a "FixYa" rating from everyone I help.

Thanks for using Fixya.com,


Oct 01, 2008 | Filter Queen Defender Air Purifier

2 Answers

The air purifier is blowing black soot.

I had the same problem and then found that it was from burning aroma candles! I will never burn them again!

Jan 04, 2008 | Honeywell HFD-130 Air Purifier

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