A & S Heating and Cooling - Oak Lawn's Certified HVAC Repair

Our preventative maintenance is designed to keep your system running efficiently and catch small issues before they become major problems, especially important with our local temperature swings. We perform a comprehensive check, including inspecting electrical connections, cleaning coils, checking refrigerant levels, testing safety controls, and lubricating moving parts. For furnaces, we pay special attention to the ignition system and heat exchanger to help prevent common winter failures. This service helps improve performance, extend your system's lifespan, and can often be completed in about an hour.

Refrigerant leaks are a frequent problem in our area that reduce cooling power and strain your system. When you call us, a technician will first perform a thorough inspection using electronic leak detectors to locate the source. We then repair the leak according to EPA standards, evacuate the system, and recharge it with the precise amount of refrigerant specified by the manufacturer. We'll also explain what caused the leak and provide options if a repair isn't the most cost-effective long-term solution. All repair work is covered by our warranty for your peace of mind.

Yes, we are specialists in new construction and remodeling projects. We collaborate closely with builders and homeowners to design and install the HVAC system that fits the specific layout and needs of the new space. This includes proper sizing, ductwork design, and selecting equipment that meets energy efficiency goals. Starting with a correctly installed system during construction is the best way to ensure long-term comfort, reliability, and lower operating costs for your new Oak Lawn home or renovated space.