Preparing Your Heating System for Winter: A Checklist

While Austin winters are generally mild compared to the Northeast, we still get our share of freezing nights — and when the temperature drops, you want your heating system ready to go. Use this checklist to prepare your furnace or heat pump before the first cold snap.

☑ DIY Checklist

Replace the air filter — Start the heating season with a fresh filter. A clogged filter restricts airflow and can cause your furnace to overheat and shut down.
Test the thermostat — Switch to heat mode and set the temperature 5°F above room temperature. The system should kick on within a minute. If it doesn't, check batteries and wiring.
Clear vents and registers — Make sure furniture, rugs, and curtains aren't blocking any supply or return vents. Blocked airflow = higher bills and uneven heating.
Check the condensate drain — High-efficiency furnaces produce condensation. A clogged drain line can cause water damage or trigger a safety shutoff. Pour a cup of vinegar down the line to clear minor clogs.
Inspect the exhaust flue — For gas furnaces, check that the outdoor exhaust vent is clear of debris, bird nests, and snow. A blocked flue can cause carbon monoxide to back up into your home.
Test carbon monoxide detectors — If you have a gas furnace, working CO detectors are non-negotiable. Replace batteries and test each unit monthly during heating season.

🔧 When to Call a Pro

Furnace makes loud banging or screeching noises on startup
Burner flame is yellow or flickering (should be steady blue)
System short-cycles (turns on and off repeatedly)
You smell gas — evacuate immediately and call 911

Schedule your fall furnace tune-up before the rush. Call (512) 555-0142 or book online.