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Weak metal created leakThe metal isn t strong enough to hold up the saturated paper. This causes the whole filter to sag, which allowed water to drip outside the drain and all over the HVAC & floor.1Live in NW Burbs of Chicago - Dec to Mar 2015 - Took my humidity from mid 20s to low 30s overnightI was hoping for a significant change in my humidity level and got it! I was dropping $$$ on the 'other' two-pack and just not happy. Had humidity level cranked all the way up and was sitting at about 24%. I would say it took about 2 days and these things had the % up by 6-8 and within a week i was back up to the 34-37% range I needed.Overnight all my upstairs/downstairs hardwood went from the dried out buckling to the smooth flat-lying floors we needed.It made it through this winter, and I just shut the system down for summer and there was no visible lime/calcium (whatever the white stuff is) deposits that are always covering the aluminum ones. I will be keeping the pad to start off next year and see how it goes. For the price, I will ONLY BE USING THIS and expect to replace them every year for maximum performance.5Seems more efficientThe new "uses less water" panels do seem to hold up to the claim. I'm using one in my Aprilaire 550 whole-house humidifier.While the standard Aprilaire panels are made of aluminum with some sort of coating, these are made of fabric so the water is absorbed into it instead of just running down the surface. They are made from the same sort of material as water-wick pads for table top humidifiers.The principle of using less water is that the air flowing through will pick up moisture faster so the whole-house humidifier will not be "on" as often.The only downside to the fabric material is that it will build up with the minerals from the water and eventually no longer be absorbent. So while I might be able to get away with using the Aprilaire panels for 2-3 years, this definitely has to be replaced annually.5Debris from filter believed to clog drain pipeLike another review, after 2 years using these filters, I got a clogged drain pipe which caused a water backup and huge mess and expensive repair. I 'assume' it's the Clay/debris that seems to be coming off filter and causing major problems.1Don't buy this.The coating all fell of in just 2 days.This pad wouldn't hold water with the coating gone.Also, the coating that fell off clogged the drain up.Had water all over the floor.Bought 6 of these,had to throw them all away.1Far better than the standard water padThis BestAir pad solved a problem that was making me an unhappy Aprilaire user.My Aprilaire system could not keep up with my home's humidity needs, but it sure did run through the hot water. With this pad, there's much more moisture transfer to the air supply. Now instead of most of the hot water going down the drain, it goes into the air (where I want it to go).I won't even buy the standard water pad anymore. This BestAir version is the only one I will buy. In fact, if somebody gave me a stack of standard pads I would throw those away and still buy this one. The savings in hot water cost alone would justify that. With the BestAir, I get the increased comfort I am really after.I have verified the huge performance increase by using humidity meters. Of course, the numbers vary with the amount of heating required. But here's an example of a sort of side by side test I ran in 2010. The outside temperature was consistently around zero degrees for several days (with the forecast, I saw this coming so decided to run tests).I have a Trane heat pump system, with variable speed blower to provide a constant (but minimal) flow of air when heat or AC isn't running. This constant flow means my Aprilaire is always running also (I removed Aprilaire's original controls, which essentially render the system pointless, and installed my own system and yes I am an engineer with a significant controls background).With the standard pad, the humidity dropped to 37%. That is well below the recommended minimum. Even the morning warmup furnace blast, which gives you the best humidification with this system, couldn't nudge it much past 40.I changed to the BestAir before going to bed, noting a humidity of 38%. I got up just before the furnace kicked on and the humidity was at 41%. After the initial warmup blast, the humidity was 45%. It dropped back to 42% under normal low demand.Then I reversed the situation by installing the standard pad, and the previous condition resumed. I already knew how the standard pad ran from previous, pre-test conditions of the previous couple of years. And that's what I got upon going back to it. So then I reversed again, and again got the better results with the BestAir. Even over several days, these results were consistent.Then it warmed up outside, and the humidity hit 47%. I put the old pad back in, and the humidity slowly dropped to 39%. Changed pads, and it went up again.I use supplemental humidifiers to get the humidity up to 48% to 52% (50% is recommended), but can stay above the low-H danger zone using just the Aprilaire but only if it has this BestAir pad installed.If you have an Aprilaire system, this BestAir pad is the only one you should be using.5
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BestAir A12W-PDQ-6 Humidifier Replacement Paper Waterpad Filter, for Aprilaire, Chippewa, Humid-Aire Neptune & Walton Models, 15" x 11.6" x 2", Single Pack