Brennan Heating & Air Conditioning: Certified HVAC Services Serving Jacksonville, IL 62650

Founded in 1947, we have deep roots in the Jacksonville community and operate from a dedicated 10,000 square foot facility. As a Carrier Factory Authorized Dealer, our certified technicians are trained to install and service all major brands, ensuring your system is set up correctly for long-term efficiency and comfort. We hold all necessary licenses and are a member of the Better Business Bureau, reflecting our commitment to quality and customer trust.

Absolutely. Furnace ignition failures are a common issue during our Illinois winters, often due to dirty sensors, faulty igniters, or gas valve problems. Our technicians are experienced in quickly diagnosing and resolving these specific cold-weather failures to restore heat to your home safely and efficiently. We prioritize these calls to ensure your family stays warm.

Yes, we provide comprehensive maintenance services for all HVAC systems. Our maintenance plans are designed to improve system efficiency, prevent unexpected breakdowns, and extend the lifespan of your equipment. Regular check-ups help catch small issues before they become major problems, saving you money and ensuring consistent comfort year-round in your Jacksonville home.