Humidifier Components:
Although there are some variations to the components of a humidifier, they all require:
In the photo above you can see most all the components of a flow-through furnace mounted humidifier. In summary, here is how it all works together:
- Water Tap / Supply Line: A water supply line for the humidifier is tapped into an existing water pipe source.
- Water Inlet Orifice: The orifice reduces the water flow to the humidifier inlet valve for economy.
- Water Inlet Valve: This valve allows water to flow to the humidifier based on demand. The valve is usually electrically controlled by a solenoid controlled by the humidistat. The solenoid is usually low voltage powered by a transformer mounted to the furnace.
- Water Feed Tube: Distributes water to the distribution trough under the top cover and feeds water to the evaporator pad.
- Evaporator Pad (media): This is the water collection medium that holds the water briefly as it is evaporated to create humidified air.
- Drain Pan: Water flows through the evaporator pad and into the drain pan where it then flows into a household drain.
- Air Damper / Air Duct: Some models have an air duct from the hot air side that supplies air to the humidifier mounted on the cold air return. If the home has central air conditioning, then a damper is required.
