The Most Common Furnace Problems in Texas Homes

Texas Winters = Furnace Surprises

Even in mild winters, North Texas furnaces see plenty of action. When cold fronts hit, small issues can quickly become big breakdowns. Here are the most common problems our techs see during furnace repair calls — and how to stop them before they start.

❄️ 1. Dirty or Clogged Filters

Restricted airflow makes furnaces overheat and shut down. Replace or clean filters every 1–3 months to keep your system breathing easy.

⚡ 2. Faulty Ignitors or Sensors

If your furnace won’t start or shuts off right away, the ignitor or flame sensor might be failing. These are common parts we check during winter maintenance visits.

💨 3. Blower Motor Issues

Strange noises or weak airflow often trace back to a worn blower motor or dirty fan wheel.

🔥 4. Thermostat Trouble

Incorrect readings or unresponsive controls can prevent your furnace from running efficiently — or at all.

🛠️ 5. Lack of Routine Maintenance

Most emergency furnace repairs we see could’ve been prevented with regular service. Tune-ups ensure safe operation and optimal performance.

🏁 Prevent Furnace Problems Before They Start

A professional inspection each fall helps identify issues early. Varsity Zone HVAC’s technicians test ignition systems, check gas pressure, clean burners, and verify safety switches — so your family stays warm and safe.

👉 It’s not too late to schedule service before winter weather arrives.