HVAC Contractor in Lexington Park, MD
Factory-Trained Technicians
Warrantied Labor and Equipment
24-Hour Emergency Services
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Exceptional Heating & A/C Services in Lexington Park, MD
Great Mills Heating & A/C, Inc has been a resource for comfort in the St. Mary's and Calvert County, MD area since 1972. As a locally and family-owned business, we pride ourselves on delivering reliable and efficient heating and air conditioning solutions.
Our team of factory-trained, NATE-certified technicians is dedicated to providing dependable, timely service, whether it's for routine maintenance or emergency repairs. We offer same-day free estimates on new equipment and 24-hour emergency services to ensure your home or business remains comfortable year-round.
With a range of services that include residential and light commercial HVAC services, we are your comprehensive HVAC partner. Our commitment to excellence is backed by manufacturer warranties, extended labor warranties, and our status as an NFIB member.
Trust us to keep your HVAC systems running smoothly with our maintenance contracts and agreements. Be sure to take advantage of our SMECO rebate for added savings. Call us now!
Why Choose Great Mills Heating & A/C?
Choosing Great Mills Heating & A/C means you get unparalleled expertise and dedication. Our licensed and insured team, holding HVAC master licenses, ensures the highest standard of service. We understand the urgency of HVAC issues, which is why we offer same-day or next-day service to address your needs promptly. If you need emergency cooling or heating repairs Lexington Park, MD can rely on, choose our team.
Our extended warranties provide peace of mind because you'll know that your investment is protected. As a Carrier, Amana, Daikin, and WaterFurnace dealer, we bring you the best in HVAC technology.
Our commitment to customer satisfaction and our long-standing presence in the community make us the trusted choice for all your residential and light commercial heating and air conditioning work.
Same-Day
 Free Estimates
24-Hour Emergency Services
Same-Day or
 Next-Day Services
Extended
 Labor Warranty
Factory-Trained Technicians
Residential and
 Light Commercial Work
Furnace Repair
Our expert technicians are trained to diagnose and repair all types of furnace issues efficiently. We offer prompt service to ensure minimal disruption to your comfort and feature a standard two-year labor warranty on residential equipment. Contact us today to learn more about our heating repairs in Lexington Park, MD!
Water Heaters
We provide installation, repair, and maintenance services for all types of water heaters. Our technicians are factory-trained and equipped to handle any issue, ensuring you have a consistent supply of hot water when you need it most.
Mini-Split Systems
Mini-split systems offer flexible and efficient heating and cooling services for your home. Whether you need a new system or care for an existing one, we provide zoned air movement and solutions tailored to address your situation.
A/C Services
We work with top brands like Carrier, Amana, and Daikin to ensure you receive the best air conditioning products and services. Our same-day or next-day service ensures your cooling system is up and running when you need it most.
Heat Pumps
Heat pumps are an efficient way to heat and cool your home. Our technicians ensure your system operates efficiently, providing you with year-round comfort. With our extended labor warranties, you can trust in the reliability of our work.
Indoor Air Quality
Let our team assess your home’s air quality and provide customized air purifiers, humidifiers, and ventilation systems to reduce pollutants and allergens, ensuring a healthier indoor environment for you and your family.
Geothermal Systems
Geothermal systems offer an eco-friendly and cost-effective way to heat and cool your home. Our team provides sustainable solutions that reduce your carbon footprint while keeping your home comfortable throughout the year.
Light Commercial HVAC Services
We offer tailored HVAC solutions for light commercial properties, ensuring your business environment remains comfortable for employees and customers. With our licensed and insured team, you can trust our commercial HVAC work.
Maintenance Plans
Regular maintenance is key to the longevity and efficiency of your HVAC systems. Our various maintenance plans are designed to keep your systems running smoothly, preventing costly breakdowns and ensuring optimal performance.
2-Year Residential Warranty
Great Mills Heating & A/C, Inc offers a standard two-year labor warranty on residential equipment. Call for details.
(301) 507-4054
1-Year Commercial Warranty
Great Mills Heating & A/C, Inc offers a standard one-year labor warranty on commercial equipment. Call for details.
(301) 507-4054
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Learn More About
Great Mills Heating & Air Conditioning
Serving the Lexington Park, MD area, Great Mills Heating & A/C, Inc specializes in residential and light commercial HVAC, including water heaters and heat pump systems. Licensed and insured heating and cooling since 1972. Extended labor and manufacturer warranties. 24-hour emergency services available. Request a free same-day estimate on new equipment now.
serving Area
St Mary's County, MD
Prince Frederick, MD
Waldorf, MD
La Plata, MD 20646
Lusby, MD 20657
Calvert County, MD
and surrounding areas
Business Hours
- Mon - Fri
- -
- Sat - Sun
- Closed
Emergency Services Available After 4:00 PM – Contact (240) 925-2230
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