Baraboo – October 01, 2026 -- Homeowners in southern Wisconsin should schedule HVAC maintenance in early fall, before freezing temperatures arrive, according to HVAC expert Gary Kowalke of Terrytown Plumbing, Heating & Cooling in Baraboo.
Waiting until winter risks rushed repairs and system failure
Kowalke warns that delaying maintenance until cold weather sets in often leads to reduced furnace performance and emergency breakdowns during freezing conditions. Scheduling service early allows technicians to catch issues before the heating system is needed for daily use.
Furnace checks cover heat exchangers, burners, and ductwork
Standard fall maintenance includes inspecting heat exchangers, checking burners and pilot lights, and cleaning or replacing filters. Technicians also calibrate thermostats and examine ductwork for leaks or blockages that can restrict airflow and raise energy use.
HRV and ERV systems improve air quality in sealed winter homes
Ventilation systems play a key role in winter readiness in Wisconsin's cold climate. An HRV (heat recovery ventilator) exchanges stale indoor air for fresh outdoor air while retaining heat, while an ERV (energy recovery ventilator) also helps manage indoor humidity in tightly sealed modern homes. Both systems perform best when evaluated and serviced in the fall.
Safety checks extend beyond the furnace itself
Homeowners are advised to test carbon monoxide detectors, inspect chimneys and flues, and clear debris from outdoor heat pump or air conditioning units. Fall service visits also give technicians a chance to recommend upgrades such as advanced thermostats or improved duct sealing to cut energy costs.
Indoor air quality becomes more critical as families spend more time indoors during winter, with HRV and ERV systems helping prevent buildup of stale air, allergens, and excess moisture.