HVAC Services Diboll TX | Call Sigma Heating & Air

In Diboll's dusty environment, we recommend checking your standard 1-inch filter every month and replacing it at least every 3 months. For homes with pets or higher dust levels, monthly replacement is often necessary to maintain airflow, protect your system, and ensure efficiency.

First, check your thermostat settings and circuit breaker. Then, ensure your outdoor unit isn't blocked by debris. If it's still not working, turn the system off to prevent damage and call us immediately. We prioritize emergency calls during extreme heat to get your Diboll home cool again fast.

We recommend a professional tune-up each spring. This includes cleaning coils, checking refrigerant levels, tightening electrical connections, and calibrating your thermostat. This proactive service is crucial for catching small issues before they cause a major breakdown during Diboll's hottest days.