Hook up humidifier to furnace

hook up humidifier to furnace

Can a humidifier be connected to a furnace?

Humidifiers that connect to a homes furnace come in three basic designs, all of which raise relative humidity in the home. The least expensive system is one that uses a drum to deliver water from a reservoir to the furnace’s hot air supply for the house.

How do you wire a humidistat to a furnace?

Some humidistats mount to the cold air return near the furnace, while others mount in the living space near the thermostat. Either way, you need to wire the humidistat into the humidifier box. You also need to tap into an existing hot wire to power the humidifier and its transformer. Working with electricity can be dangerous.

How to install a humidifier in your home?

Some humidifiers are required to be installed on the supply side of the ductwork, while others can be installed on the return side. Moreover, the humidifier must be located close to the water supply and electrical outlet, while being away from other components of the HVAC system such as air conditioner coils.

Can you wire a humidifier to a blower?

Wiring a Humidifier to a Furnace Blower. When air circulates the area and goes right into the heat exchanger, their exposure to the hot metal tubes removes the moisture. In order to bring back moisture back inside the house or any given space, an automatic furnace humidifier should be installed.

Can you put a humidifier on the return side of a furnace?

Bypass Humidifiers can be installed on the supply (hot air) or the return (cool air) duct. – Some people prefer to install on the return side so nothing is ruined in your furnace if there is ever a water leak. Steam, Drums, and Fan-Powered Humidifiers are typically installed on the supply (hot air) duct.

How does a steam humidifier work on a gas furnace?

A steam humidifier heats water to create steam that is injected into the furnace airflow. The takeoff duct diverts some heated air into the humidifier, where it absorbs moisture from an evaporator pad before returning to the warm air stream through the cold-air return duct and furnace.

Can a humidifier be mounted directly to the hot air duct?

Some models may be mounted directly to the hot air supply duct and do not use a supply takeoff duct at all. How a Humidifier Works All furnace-mounted home humidifiers work by introducing moisture from water and evaporating it into a warm air stream coming from the furnace.

What is a furnace humidifier?

His home repair articles for The Spruce span more than 10 years. A furnace-mounted, or whole-house, humidifier is designed to connect to a forced-air heating/cooling system to deliver moistened air throughout the house. There are several different types of furnace humidifiers.

How do I hook up a humidifier to my furnace?

You may be able to simply connect the wire from the humidifier to the W terminal in the furnace, instead of directly to the transformer. That way, the humidifier will only get power when the thermostat is calling for heat. However, without knowing more details about your system, its impossible to say for sure if that will work.

What voltage should a humidifier run on a furnace?

When the furnace is running in heat mode, you should measure ~120 volts about 1 second after the blower motor starts. According to the manufacturer, the HUM terminal is rated for 1 ampere at 120 volts. You may be able to simply connect the wire from the humidifier to the W terminal in the furnace, instead of directly to the transformer.

How do I Turn on the humidifier without a switch?

If you dont want a manual switch, you could mess around with a relay or other control circuitry. Using a relay, it could be wire up like this. That way the humidifier will run whenever the fan is running, except when the thermostat is calling for cool.

Why does my humidifier have two wires?

The two wires have two separate functions. One wire will serve as the ground wire or the neutral wire for the humidifier at 120 VAC and one will serve as the power wire. A humidifier in a 220 VAC edition will end up using both of the wire as its power wire. Wire nuts should cover all the bare connections in the setup.

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