Dry Indoor Air in November? A Guide to Winter Humidity

Dry hands, static shocks, and a scratchy throat can become familiar annoyances as November settles into Greater Pittsburgh. Cold outdoor air generally contains less moisture, and when that air enters your home and warms up, its relative humidity drops. Your furnace usually isn’t removing that moisture directly, so simply turning down the heat may not solve the problem.

Before adding moisture, check your indoor relative humidity with a small digital hygrometer. In a Bethel Park home, place it in a regularly used living space, away from supply vents, windows, and steamy bathrooms. Around 30–50% relative humidity is a common general guideline, but winter conditions may require a lower setting to prevent condensation on cold surfaces.

Let your windows help guide adjustments rather than chasing one fixed number all season. If a homeowner in Sewickley notices persistent moisture on the inside of windows after increasing humidity, it’s time to reduce the setting and investigate if the problem continues. Excess moisture can encourage mold and damage finishes, especially where surfaces stay cold.

A portable humidifier can help with a single bedroom, but regular cleaning is essential. Follow the manufacturer’s directions for water type, cleaning, and filter or cartridge replacement, and don’t leave old water sitting in the tank. Keep using bathroom and kitchen exhaust fans as needed rather than trapping cooking and shower moisture to humidify the house.

For broader coverage, a whole-home humidifier may be an option when your home has a compatible ducted heating system. The right equipment depends on your ductwork, water supply, controls, and maintenance needs; homes heated only by boilers or ductless mini-splits need a different approach. An HVAC professional can also check whether excessive outdoor air leakage is contributing to dryness before recommending equipment.

If your home feels uncomfortably dry this November, contact MRT HVAC Contracting to discuss humidity control and indoor air quality options. Our family-run team has served Greater Pittsburgh for over 30 years and can help you choose a practical solution that fits your heating system and maintenance preferences.