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Old 12-01-2013, 12:06 PM   #1
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Whole House Steam Humidifier


Our home has a pretty old Aprilaire bypass evaporation humidifier installed and I notice it has failed. Rather than fix this old thing, I want to put a new unit in and came across the option of steam.

The existing unit has a large duct that runs from the return side to the failed Aprilaire unit and obviously a fairly large opening cut into the supply duct.

Using a steam humidifier, from what I see, I will only need a small hole. What is my best method to cover up the existing opening? I thought about just making a blanking plate to cover the duct that comes from the return side.

Also, recommendations on brand? I like the Honeywell TrueSteam, but I see a big mix of positive and negative reviews. Looking for some real world feedback here.

Thanks.

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Old 12-01-2013, 12:25 PM   #2
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Whole House Steam Humidifier


If you can get enough humidity with a bypass then definetly use one. Steam units are very expensive and problematic. I only recommend them for huge houses where a bypass won't keep up. Unless you have a water softener and filter like Honeywell recommends then true steam can be a big problem and that is a big extra cost. Chemistry 101. When you evaporate water then minerals get left behind on the heating element and water level probes etc and create a huge problem. Honeywell makes good DIY friendly bypass units and HDepot has them.

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Old 12-01-2013, 12:30 PM   #3
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Whole House Steam Humidifier


Thanks for the quick reply. What about the types that are self-powered and do not require the section from the return duct?

Such as the Honeywell HE360?
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Old 12-01-2013, 12:36 PM   #4
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Whole House Steam Humidifier


bypass is the most simple and reliable. fan powered needs 120 volts to it and eventually that motor will wear out.
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