Does your home feel dry when the heat is running? Before increasing a humidifier setting, find out what the indoor humidity actually is. A feeling alone does not tell you how much moisture is in the air—or whether adding more is the right next step.
Start with a reading
A humidity meter, also called a hygrometer, measures relative humidity. Some thermostats display it too. Follow the device’s placement instructions and record the reading, room, and time. Taking a few readings on different days gives you useful notes to discuss instead of relying on one impression.
Do not treat 50% as a winter goal
EPA’s general moisture-control guidance recommends keeping indoor relative humidity below 60%, ideally between 30% and 50%. That is not a direction to set every humidifier to 50%. Carrier suggests about 30%–40% during winter and notes that colder outdoor conditions may require a lower setting. Windows and the home’s construction affect what is appropriate.
Watch the windows, not just the number
If moisture collects on the inside of windows, dry the wet surface promptly and address the moisture source. Condensation can indicate that humidity is too high for the conditions. Do not keep increasing humidification to chase a target number while windows stay wet. Use only the homeowner controls described in your equipment manual, and ask for guidance if you are unsure.
Know when to call
Persistent dampness, an unexplained humidity pattern, or a humidifier that does not respond normally warrants investigation. A reading does not identify a leak or diagnose an equipment fault. Do not open powered equipment, alter water connections, or change wiring for this check. Any visible water leak needs attention rather than a higher or lower thermostat setting.
For heating-comfort concerns or help evaluating your HVAC humidity controls in Roseto, the Slate Belt, and the Lehigh Valley, call Slateco at 484-291-7752.
Explore Slateco heating and cooling services ↗Sources: EPA: A Brief Guide to Mold, Moisture and Your Home and Carrier: Ideal Indoor Humidity. Follow your equipment manufacturer’s homeowner instructions.
Prepared with AI assistance for Slateco Heating and Cooling LLC. This is general homeowner guidance.