Austin’s hot, humid summers and high attic temperatures put extra strain on blower motors and electronic controls even when the furnace isn’t running. Winters are mild but occasionally hit with sudden cold snaps, so stored moisture, corrosion, or rodent damage in unused systems can create problems when you finally turn heat on.

Locally we see clogged filters and reduced airflow from attic duct leaks, ignition or control module failures in gas furnaces, and heat pump compressor or reversing valve faults after prolonged summer use. Older homes with periodic foundation movement can develop disconnected or crushed ducts, which reduces efficiency and causes uneven heating.

Before calling a technician, swap in a clean filter, confirm the thermostat is set to heat and the breaker is on, and test the system briefly to note strange noises or error codes. If you smell gas or suspect carbon monoxide, evacuate immediately, call 911, and do not re-enter until it’s safe—then contact a qualified repair service.

Schedule a safety inspection and tune-up in October–November to catch cracked heat exchangers, bad ignitors, or worn blower belts before a cold night hits, and avoid the busy summer AC season for non-urgent work. For homes near Zilker, Westlake, or up by the Hill Country in Cedar Park, ask your technician about duct sealing and attic insulation to keep the rare winters efficient.