Central Texas heating seasons are short, which makes it easy to forget the furnace until the first cold front, the same week everyone else turns theirs on. A fall furnace tune-up is mainly about safety and reliability: confirming the system ignites, burns and vents properly, and catching worn parts before a freeze. Requests sent through this site go to an independent contractor licensed by the Texas Department of Licensing and Regulation (TDLR).
What a good gas furnace tune-up includes
- Inspecting the burners, flame and ignition system (hot surface igniter or pilot).
- Cleaning or checking the flame sensor, a common cause of furnaces that light and then shut off.
- Visual inspection of the heat exchanger for cracks, rust or soot.
- Checking the venting and flue for blockages, corrosion, disconnected joints and proper slope.
- Verifying gas pressure and checking for leaks at fittings.
- Testing safety controls such as limit switches, rollout switches and the pressure switch.
- Measuring temperature rise and checking blower operation.
- Checking the condensate drain on high-efficiency furnaces.
- Combustion or carbon monoxide testing, if the contractor offers it. Ask whether it's included.
Heat pumps and electric heat
If you have a heat pump or electric air handler, the fall visit focuses on defrost operation, reversing valve function, auxiliary heat strips, electrical connections and refrigerant performance in heating mode. See heat pump repair for common issues.
That first-run smell
A faint burning-dust smell for the first few minutes of the season is common as dust burns off the heat exchanger or heat strips. A smell that persists, smells like rotten eggs (gas), or smells electrical isn't normal. For a gas smell, leave the home and call your gas utility or 911 from outside.
What you can do yourself
- Replace the filter before the heating season.
- Test your carbon monoxide alarms and replace their batteries.
- Keep storage boxes and clutter away from an attic or closet furnace.
- Make sure the area around the flue on the roof is clear.
Combining visits
Many homeowners pair a fall furnace tune-up with a spring AC tune-up, and some contractors bundle both in a maintenance plan.
How a request works
Tell us your town and whether you have a gas furnace or heat pump. We'll forward your request to an independent licensed contractor serving your area, who will contact you to schedule.
Furnace & Heating Tune-Up FAQs
Do I need a furnace tune-up in mild Texas winters?
A yearly check is mainly about safety (ignition, venting, the heat exchanger) and making sure the system starts on the first cold night.
When should I schedule it?
Early fall, before the first cold front, when contractors are less busy than in peak summer or freeze events.
Is carbon monoxide testing included?
Not always. Ask whether combustion or CO testing is part of the visit.
What can I do myself?
Replace the filter, test your CO alarms, and keep clutter away from the furnace.
Is the burning smell on first startup normal?
A brief dusty smell is common. If it lasts, smells electrical, or smells like gas, stop and get help.