Heating & cooling
Maintain a whole-home humidifier
Whole-home humidifiers add water to the HVAC system. Clean media, free drainage and conservative humidity settings help prevent scale, leakage and window condensation.
Recommended timingCheck monthly in heating season; service by manual
What to do
- Identify the exact make and model, then follow its instructions for water panels, pads, canisters, drains, filters and seasonal bypass settings.
- During use, check monthly for mineral buildup, a clogged drain, standing water, leaks and condensation on windows or cool exterior walls.
- Replace the water panel or service media on the manufacturer's schedule; AprilAire commonly calls for annual replacement, with some models needing twice-per-season service.
- At season end, follow the manual to shut off the water supply and place the bypass or control in its summer position when applicable.
- Have an HVAC professional correct ongoing leaks, electrical faults, uncontrolled humidity, drain problems or internal equipment buildup.
Shut off power and water before owner-permitted service. Never work inside energized HVAC equipment or alter the furnace controls.
Official guidance and sources
Product instructions and local requirements take priority for the equipment or material installed at your home.