How is a bypass humidifier different from a power humidifier?

The furnace must be running for a bypass humidifier to work; a fan- powered unit can operate on its own. Bypass humidifiers require extra ductwork, known as a bypass duct, and air must be recirculated back through the furnace before distribution into the home, whereas fan-powered units can be installed directly. Which Humidifies a Home Quicker?

Do you need a high limit humidistat for wetted media humidifiers?

Wetted media humidifiers cannot oversaturate airstreams and so a duct high-limit humidistat is not a requirement. To ensure proper operation, the high-limit sensor must be located far enough downstream of the disperser to allow for full absorption and for humidity to equalize in the airstream.

Can a high limit humidifier be used on a variable air volume system?

Otherwise, short cycling of the humidifier can occur, resulting in an unsatisfied humidification demand. Most humidifiers can use an inexpensive on/off-type high-limit humidistat, except in variable air volume (VAV) systems.

What should the relative humidity of a humidifier be?

It is usually set at 90 percent relative humidity (RH). If duct RH rises above that setting, it will shut down the humidifier. Wetted media humidifiers cannot oversaturate airstreams and so a duct high-limit humidistat is not a requirement.

What do you need to know about installing a humidifier?

And, of course, it adds to the revenue stream. Contractors should make homeowners familiar with their humidifiers before they ever leave the house. Tell them where the water shut-off is, where the humidistat is, and give them a brief lesson on how to service and clean the humidifier.

What are the features of a Honeywell humidifier?

Includes relative humidity (RH) convertible humidity control, drain connection, saddle valve, water supply, tubing, pad 24V transformer, wiring & installation kit