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how does a furnace humidifier work

If you’re like most people, you spend most of your time indoors. And if you’re not careful, the air in your home can be just as bad, if not worse, than the air outside. It is where a furnace humidifier comes in handy. But do you have any idea how does a furnace humidifier work?

This blog post will discuss how a furnace humidifier works and how it can help improve indoor air quality!

What is A Furnace Humidifier?

A furnace humidifier is a device used to add moisture to the air in a home. The device is connected to the furnace and uses the warm air from the furnace to evaporate water. This process adds humidity to the air, which can help improve indoor air quality.

Your furnace humidifier is an essential part of your house because it protects your family and the content and structure of your home from the impacts of too dry weather. Many people are surprised to learn that dry circumstances make them feel colder. Therefore, a humidifier is vital in guaranteeing comfort and energy savings.

How Does A Furnace Humidifier Work?

Furnace humidifiers attach to a water supply and the furnace’s hot air supply, dispersing moisture through the ducts. Furnace humidifiers function in unison with your heating system or furnace, turning on and off depending on your thermostat/humidistat settings, usually when the relative humidity falls below 30-50 percent. They create moisture while in use, filling it with furnace-heated air.

Simply change the humidistat dial settings while your system is in heat mode to activate your humidifier. To assess the present humidity levels in your house, turn until you hear a click and adjust the settings appropriately. Ensure that the bypass damper on your furnace is in the ‘open’ or ‘winter’ setting and perpendicular to the duct. Your humidifier operates if you observe water draining from it while your system is running.

Types of Furnace Humidifiers

The humidifier components, regardless of kind, perform the same functions: generating moisture and integrating it with the warm air produced by your heating system for transmission through ductwork and operating with your HVAC control to monitor humidity levels and temperature continuously.

Humidifiers for furnaces come in three varieties:

Steam humidifier

A self-generating steam heater, which boils water as required and injects steam directly into heated air for distribution, is included in steam humidifiers. Despite being more costly than other humidifier models, they provide the most efficient operating – and need the least maintenance.

Flow-through humidifier

These humidifiers are more dependable and need less maintenance than reservoir humidifiers. They depend on water dripping through a unique coated screen connected to the unit from an existing water pipe. While the furnace operates, the blower causes evaporation, which distributes moisture throughout your house.

Reservoir humidifier

This humidifier stores water in a tank and uses a wick to absorb and dispense it into the air. A fan forces air across the moistened wick and then disperses it into your home through ductwork. These models require more maintenance than flow-through humidifiers but are less expensive.


A furnace humidifier is a great way to improve indoor air quality and comfort in your home. It works by adding moisture to the air, which can help to improve indoor air quality. There are three types of furnace humidifiers, and each has its advantages. Be sure to choose the right humidifier for your home and needs.

If you are looking for a way to improve the air quality in your home, consider investing in a furnace humidifier! Furnace Repair Winnipeg can help you with all your humidifier and HVAC needs! Give us a call today!

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