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Lexington Park HVAC Services
Need heating or AC help in Lexington Park? Great Mills Heating & AC repairs, installs and maintains furnaces, air conditioners and heat pumps across St. Mary's, Charles and Calvert counties. We've served Southern Maryland since 1972 and give a written quote before work begins. Call (301) 381-2679.
Since 1972, residents in Lexington Park and the surrounding area have trusted us to help them manage their heating and cooling needs. With decades of experience backing our work, we’re uniquely skilled at creating comfortable, efficient homes through a wide range of HVAC services.
Our work includes repair, installation, replacement, and routine maintenance aimed at keeping your heating and air conditioning systems performing their best all year long. Whether you're dealing with an unexpected equipment failure or planning an upgrade to a more energy-efficient solution, we’ve got you covered.
Beyond traditional HVAC services, we offer dependable solutions in indoor air quality. From advanced filtration systems to humidity control, we help you create a healthier living environment. We’re also highly skilled in modern systems like heat pumps and mini-splits, which are often ideal choices for optimizing your comfort and reducing your energy costs.
When you work with us, you gain a partner with a proud history of service excellence and a commitment to keeping your home comfortable no matter the season. Reach out today and see how we can meet your HVAC needs with quality, precision, and care.
We offer 24/7 emergency repair services and strive for same-day scheduling of non-emergencies. Call (301) 381-2679 today.
Heating and Cooling Across Southern Maryland
Great Mills Heating & AC is a Lexington Park HVAC company that homeowners across Southern Maryland have called since 1972. Heating season is when your system works hardest, so small problems show up fast.
Heating Repair and Installation
We repair gas furnaces, electric furnaces and heat pumps. If your heat blows cool air, won't start, or keeps shutting off, call us. We explain what failed in plain language and give you a written quote before work starts. Learn more on our furnace repair page.
Heat Pump Service
Heat pumps heat your home in winter and cool it in summer. We repair, install and maintain them across St. Mary's, Charles and Calvert counties. See our heat pump service page.
AC Repair and Maintenance
When summer comes back, we're ready with AC repair and AC service and maintenance. A yearly tune-up helps catch small problems before they turn into breakdowns.
Where We Work
We serve Lexington Park, California, Leonardtown, Hollywood, St. Mary's City, Prince Frederick, Waldorf, La Plata and the surrounding communities. See all of our HVAC services or visit the contact page.
Smell gas? Leave the house right away and call your gas utility or 911 from outside.
Our Heating & Air Conditioning Services
Learn How We Can Help!
Serving St. Mary’s County and Beyond
HVAC systems in this region face unique challenges due to the combination of high humidity, seasonal weather variations, and other environmental factors. These conditions can take a toll on heating and cooling equipment, making it important to work with technicians who understand the specific needs of local homes.
That’s where our team of NATE-certified and factory-trained technicians can make a big difference. We have the knowledge and experience to address even the most complex HVAC issues. Whether your system struggles to cope with high summer humidity or your heating equipment underperforms during the cold and wet winters, our technicians provide customized solutions aimed at restoring optimum comfort.
Heating and Cooling Questions
What HVAC services does Great Mills offer in Lexington Park?
We repair, install and maintain furnaces, air conditioners and heat pumps. We also offer indoor air quality services. Call (301) 381-2679 to book.
What should I do if my furnace is blowing cold air?
Set the thermostat to Heat with the fan on Auto. Check the air filter, and confirm the furnace switch is on. Still cold? Call a technician.
Do you repair heat pumps in Southern Maryland?
Yes. We repair, install and maintain heat pumps across St. Mary's, Charles and Calvert counties.
What areas do you serve?
All of St. Mary's County, including Lexington Park. We also serve Charles County, including Waldorf and La Plata, and Calvert County, including Prince Frederick.
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Why Choose Great Mills Heating & Air Conditioning?
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Same-Day Service AvailableDon't wait weeks for an appointment. Book us same-day!
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Offering 100% Free QuotesGet started by giving us a call and setting up a free estimate.
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24/7 HVAC ServiceDon't stress about weekday bookings or office hours. We're available on weekends and offer emergency services.
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Licensed & InsuredEntrust your HVAC needs to licensed, insured professionals.
Financing Is Available
We understand that maintaining a comfortable home can come with financial stresses. As a family-owned company, we know the importance of balancing household expenses while meeting your family’s needs. That’s why we’re committed to making HVAC services more accessible with flexible financing options and payment plans.
Whether you’re dealing with an unexpected repair or planning an investment in a new system, we’re here to help. Our financing solutions are designed to take the pressure off, allowing you to manage your monthly budget without compromising quality or comfort.
Unlike the corporate HVAC firms, our family-run business prides itself on personalizing solutions to fit your budget. We take the time to understand your needs and work with you to find an option that’s right for your situation.
When you choose us, you’re getting more than high-quality HVAC services. You’re also working with a team that values your trust and prioritizes your peace of mind.
Call (301) 381-2679 or contact us online today to schedule an appointment and get a free estimate. Our work is backed up by warranty.
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“We have been doing business with Great Mills Heating & A.C. since we built our house in 1997. They are professional, polite, courteous, and reasonably priced.”Ted
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“GM definitely earned a 5-star rating and not just for the last job but for all the many jobs they've done for me in the past 25 years.”Ray
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“Great Mills Heating and Air just installed my hot water heater and installed my HVAC system 4 years ago. I have been impressed with them both times.”Kathryn
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“The service team was fast, professional, and punctual. I needed a quick adjustment within a couple of weeks and they sent a tech out, same-day, without any resistance.”Adam
