Great Mills Heating & Air Conditioning: Licensed HVAC Repair Serving Lexington Park, MD 20653

We provide comprehensive HVAC services for residential and commercial clients in Lexington Park and Southern Maryland, including installation, repair, and maintenance of systems like heat pumps, furnaces, water heaters, mini-splits, and geothermal units. As a Factory Authorized Carrier Dealer, we ensure quality work with reliable equipment, and we offer financing and emergency services to meet your needs.

For heat pump reversing valve issues common in our area, our experienced technicians in Lexington Park perform thorough diagnostics to identify the problem, whether it's due to wear, refrigerant issues, or electrical faults. We repair or replace valves as needed using quality parts, and we provide maintenance tips to help prevent future failures, ensuring your system runs efficiently in Southern Maryland's climate.

Yes, we offer emergency heating and cooling services for residents and businesses in St. Mary's County, including Lexington Park. Available for urgent issues like system failures or extreme temperature concerns, our team responds promptly to restore comfort, and we provide clear communication on service timelines and costs to help you manage the situation effectively.