Hamilton Beach True Air 05920 Blue Humidifier Filter

I've kept my filter FRESH and stinkfree for 5 years
I have been using this humidifier for 5 years. Here's how I keep the filter fresh.

I fill the tank at night before bed, run it on low, and by the next night the tank is empty and the filter is all dry. I flip the filter, fill the tank, and start over again. If I need to add water more frequently (on a dry day or if I want higher humidity), I still have to LET THE FILTER DRY OUT and FLIP the filter BEFORE I add new water.

So, I run it 24/7, and it lasts about 7 to 8 weeks because
(1) I let the humidifier run until the filter is bone DRY for EACH tank of water.
(2) I flip the filter every time I put a new tank of water on it.
(3) I put the tank and tray in the dishwasher once every 7 to 10 days.

These are what the instructions say to do, and I have found it WORKS! I need two or three filters per season.

If you keep adding water without letting the tray and filter dry, your filter will get stinky and yellow in 2 weeks...

Some Suggestions from a long time user...
First - the reviewers that recount experiences of bad smells from their filters need to undrstand that wick humidifiers, like the HB 05920 and 05921, require that an anti-bacterial solution be added to the water tank when filling. This solution, I use "Golden Solution" (try Google), prevents mold and algae from forming on the filter and in the tank. This prevents the odors and gets you a couple months out of your filter if you run your unit 24/7 like me.

Second - there are other replacement filters on the market that are the same size as the HB True Air replacement filter and cost half as much.

I use two HB True Air humidifiers and usually stock up on 4 filters each for the 6 months they run continously in my loft. I have a couple True Air filters and a couple Best Air filters right now and cannot tell the difference between them when it comes to performance. The name brand True Air's keep their shape better, but for nine bucks, I'm not worried about the...

Best Humidifier and Filters I've ever found
I've been through so many humidifiers that get moldy and nasty so that you just have to throw them out. My sister spent a lot of mony on a Hunter that is supposedly clean free, but it always had mold in the standing water when I lifted the tank for refill. This Hamilton Beach is a wonder. I use it every night year round. If you follow the directions and put the parts in the dishwasher once a week and turn the filter every time you refill the tank it works like a charm. The only time I have had a filter go bad is when I go on a trip and it just gets moldy. I haven't found a way around that. But otherwise, I can use one for months without a problem. It's all in following the directions. And it helps to change the water in the tank at least every other day. I recommend this item to everyone.

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