Fast and easy way to install a furnace humidifier to increase your home comfort

January 14, 2021

Fast and easy way to install a furnace humidifier to increase your home comfort

The process of installing a humidifier on a furnace to protect your family from dry air is relatively easy, to install this system, a hot or cold water pipe is needed nearby, this is where the water solenoid of a forced-air furnace humidifier is typically connected to, in order to draw water. Some of these humidifiers are heated by the supply air, they add the right amount of moisture to the surrounding air because they are installed in the return-air duct. The installation process uses a bypass duct in the humidifier in order to reintroduce to the air going to the house.

Manufacturers produce a template in which holes can be cut out in the venting when carrying out the installation for either of these systems. In these systems make sure you shut off the furnace before you start, then the Cutting of holes, installation of the humidifier and marking of the template will take about two hours.


Step 1 - Marking & Cutting the Hole

This process makes the use of a template and marker in order to map out a hole in which the house humidifier will be installed, this templates and instruction are provided by the manufacturers. To start with the outline is drilled at the corners, then with the instruction from the manufacturer, hole is cut out with aviation snips. Before drilling the screwed hole, the mounting plate must be in position, then it is attached to a mounting plate with sheet metal screws.

Furnace humidifer installation ottawa
Cutting The Hole in the plenum or return drop

Step 2 - Mark & Cut Outline of the Humidistat

The instruction manual from the manufacturer is used to know the location of the humidistat, usually they're 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.

Furnace humidifer installation ottawa

Step 3 - Install Electrical for the home Humidifier

Following the instruction in the manufacturer’s manual, connect the humidistat to the furnace control. Some unit makes use of a step-down transformer 120v to 24v, shut down the power if you haven’t done the wiring. Then you can wire the humidistat and install the transformer. The picture bellow shows how this should be wired. if you need assitance call the professionals at Pro Duct Solutions.

Furnace humidifer installation ottawa
Electrical Wiring for flow through humidifier

STEP 4 - Connect The Furnace Bypass Humidifier

On the humidistat, attach the humidistat to the solenoid valve using the correct size of the nut, attach the nuts and the wire ends and turn the nuts till they become tight ( but do not twist the ends of the wire).

Furnace humidifer installation ottawa
central humidifier installation

STEP 5 - Install Water Line to The Humidifier

The installation of a saddle valve on a water line is necessary if local codes allow the tapping of water line directly, and then run a line to the humidifier, afterward use the compression fitting to make it speedy. The saddle valve may not be allowed to turn off the water line and install at-fitting. then you can Install a Bypass line to create water vapour in the hvac system. If you have any difficulties with this step, feel free to contact us.

Furnace humidifer installation ottawa
Water Line Tap
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