Humidifier - Whole House Type ? - HVAC - Contractor Talk

Humidifier - Whole House Type ?

 
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Old 01-13-2018, 12:18 PM   #1
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Humidifier - Whole House Type ?


Can't quite get the differences of 2 types of central HVAC humidifiers, By-pass and Fan - type, or why go with one or the other.

It would be for a split system say 3.5 ton I suppose 140k btu only a few years old.

I'm looking at a Honeywell from Grainger ~ 250.00 comes with most all the hook up stuff. April Air ok also ?

Any input ?
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Old 01-13-2018, 12:30 PM   #2
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Re: Humidifier - Whole House Type ?


Aprilaire is up-price from Honeywell. Digital display, etc.

Honeywell has (imo) become entry level since they started selling to Home Depot. Before that - they had the best stats, etc. Not any more YMMV.

Check cost of replacement evap pad for each unit.

If return air is close to supply air of furnace, then the non-fan unit would be preferred.

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Old 01-14-2018, 06:38 AM   #3
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Re: Humidifier - Whole House Type ?


Generally fan powered can put a little more moisture into the air then a bypass. However, a bypass with the humidifier installed on the return is safer then a fan powered installed on the supply.

A fan powered doesn't decrease air flow to the house like a bypass does.
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