Description
This is a BRAND NEW OEM Aprilaire Humidifier Red Water Orifice. This simple but critical part regulates the flow of water into the humidifier. Over time it can become clogged with sediments or mineral deposits. It should be replaced annually for optimum performance. Be sure to clean or replace your In Line Strainer (Aprilaire part # AP-4004) when you replace the orifice. Thanks for looking and good luck!
Function:
Humidifiers increase the humidity in room or building. A humidifier that is attached to your HVAC system will increase the humidity coming out of the home's air duct registers.
Replaces Old Part #s:
4021 AP-4021
Repair Difficulty Level:
Partial List of Units that Use This Item:
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