HVAC Repair & Installation in O'Fallon, MO | Autumn Air Company

Uneven temperatures are a common issue in our area, often caused by aging ductwork, an improperly sized system, or airflow imbalances. We start with a thorough inspection of your entire HVAC system and ductwork to pinpoint the cause. Our solutions can range from adjusting dampers and sealing ducts to recommending zoning systems or, if needed, a correctly sized replacement unit that evenly cools your entire O'Fallon home.

We guide you through the entire process. First, we provide a free, detailed estimate with several high-efficiency equipment options to fit different budgets, including multi-stage furnaces and heat pumps. Our experienced technicians handle the installation professionally and clean up thoroughly. We can also offer solutions for modern thermostats, even in homes where running new wiring is a challenge.

Yes, we operate 24 hours a day for emergency repairs. Our service trucks are stocked with the most common repair parts, so we can often complete the repair on the first visit, even on nights and weekends. For less common parts, we have direct access to local suppliers to get your heating or cooling system back up and running as quickly as possible.