Living in West Texas means dealing with unpredictable weather shifts. We can go from a scorching late-summer afternoon to a crisp, freezing autumnal cold front almost overnight. When that sudden chill hits Lubbock, the last thing you want is to turn on your thermostat only to find out your heating system isn’t up to the task.
Taking a little time early in the autumn season to check your heating system can save you from high energy bills, inconvenient breakdowns, and chilly evenings.
Here is how you can tell if your furnace is ready for fall—and what steps to take if it needs a boost.
1. You’ve Changed the Air Filter
If you haven’t replaced your air filter since mid-summer, now is the time. Dust, West Texas dirt, and summer allergens accumulate quickly in your system’s air intake.
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Why it matters: A clogged filter restricts airflow, forcing your furnace to work significantly harder to warm your home. This leads to higher utility bills and increases the risk of component overheating.
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The check: Inspect your air filter. If it looks grey, caked in dust, or clogged, swap it out for a clean one before turning on the heat.
2. Your Thermostat Responds Accurately
Before you actually need heat on a cold night, perform a quick system test using your thermostat.
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How to test: Switch your thermostat from COOL to HEAT and set the temperature 3 to 5 degrees higher than the current room temperature. You should hear the furnace kick on within a minute or two, followed by warm air flowing evenly from your vents.
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What to watch for: If the system doesn’t turn on, short-cycles (turns on and off rapidly), or blows cold air, your thermostat or heating system may need recalibration or repair.
3. The Initial “First Burn” Smell Dissipates Quickly
When you fire up your furnace for the first time each autumn, it is normal to detect a faint burning or dusty smell. This is simply the heat exchangers burning off dust that collected over the summer months.
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What’s normal: A slight dust smell that disappears within 15 to 30 minutes of running.
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Red flags: If you notice a persistent burning smell, a strong odor of gas, or a metallic/burning plastic smell, switch the unit off immediately. A gas odor indicates a potential leak, while a metallic smell could signal an overheating motor or damaged wiring.
4. Air Flow Is Strong and Consistent
Walk around your home and check the supply registers in each room once the heat is running.
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Warm, steady airflow: Warm air should blow steadily from every vent without rattling, whistling, or buzzing sounds coming from the ductwork.
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Uneven heating: If some rooms remain cold while others overheat, or if air is barely trickling out, you may have duct leakage, closed dampers, or a failing blower motor.
5. Your Pilot Light Runs Clean (For Gas Furnaces)
If you have an older gas furnace with a standing pilot light, take a look at the flame.
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Healthy flame: A properly functioning burner flame should be a clear, steady blue.
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Warning sign: A flickering yellow or orange flame suggests incomplete combustion. This can be caused by dirt accumulation on the burner nozzle or a lack of oxygen, which increases the risk of carbon monoxide creation.
6. Your Carbon Monoxide Detectors Are Working
Because gas furnaces rely on combustion to generate heat, ensuring your home’s safety devices are operational is essential before the heating season begins.
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Action step: Press the test button on all carbon monoxide (CO) detectors in your home. Replace batteries as needed, and ensure a detector is located outside every sleeping area.
The Best Way to Be Ready: Schedule Pre-Season Fall Maintenance
While basic checks like changing filters and testing thermostats are great DIY steps, many vital heating components—like heat exchangers, gas valves, ignition systems, and electrical connections—require professional evaluation.
A pre-season maintenance tune-up ensures that your furnace operates at peak efficiency, preventing mid-winter breakdowns and keeping energy costs low.
Trust Extreme Heating & AC for Your Fall Tune-Up
With over 20 years of experience serving Lubbock and the surrounding West Texas area, Extreme Heating & AC is dedicated to keeping your home comfortable in every season. Whether you need a fall tune-up, quick system repairs, or a full heating system replacement, our local technicians are ready to help.
Don’t wait for the first freezing cold front to find out your furnace has an issue. Give Extreme Heating & AC a call today at 806-548-3773 or visit extremeheatingandac.net to schedule your fall heating inspection!
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