Humidifier furnace hook up

Can I connect my humidifier to my furnace?

I dont recommend using the G and Gf connections. The humidifier should only run when in heating mode to be most effective. The C connection is available at the furnace in the same place the other thermostat wires are connected.

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 an electrical box?

In order to run the wire inside the electrical box, a knock hole should be removed. The screwdriver’s end can be used for the round metal plug removal. The ends of the two wires used to connect the contractor and the electrical box should be stripped. These wires will transport the electrical power to the humidifier.

How do you connect a humidifier to a low voltage thermostat?

The instruction manual from the manufacturer is used to know the location of the humidistat, usually theyre connected on the cold air return at least 1 foot above the humidifier. Once the hole is cut out, you will then need to connect the low voltage and secure the thermostat with the supplied tin screws.

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.

How do you test a humidifier on a furnace?

The HUM terminal on most furnaces is a 120VAC terminal. If you want to use the HUM terminal to control the humidifier, youre going to have to use a step down transformer, to drop that down to 24VAC. To measure the voltage on the HUM terminal: Set your volt meter to measure AC volts. Place one probe on one HUM terminal.

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.

Do I need a furnace humidifier for my home?

Regularly running a humidifier can assist in: Home furnace humidifiers have been shown to improve lung health, relieve chronic running nose, dry throat, nose bleeds and reduce instances of illness. Humidifiers are also regularly recommended by asthma and allergy doctors.

How do you connect a humidifier to a humidistat?

Since you have a Humidifier terminal, instead of R youd connect to that. You should also connect the humidistat that comes with it in-line with this wire (doesnt matter wire is which) as per the instructions.

Can a thermostat motor be connected to a humidifier?

In general, by connecting between R and C, the thermostat motor will only have the ability to come on when the furnace is actively heating (it wont come on if the fan is set to On mode, or if the air conditioner is on). Since you have a Humidifier terminal, instead of R youd connect to that.

How many volts does a humidifier use?

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.

Can you connect a humidifier to Nest Thermostat?

Now, connecting the Nest to the humidifier was not a straight-forward process. Humidistats come in two types, which basically comes down to 1-wire or 2-wire controls. If yours only uses 1 wire, good news, you can easily and quickly hook it up to the Nest.