Light Commercial

 HVAC Services

Factory-Trained Technicians

Warrantied Labor and Equipment

24-Hour Emergency Services

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on New Construction and System Replacement

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Light Commercial HVAC Services for Your Business

At Great Mills Heating & A/C, Inc, we understand the unique HVAC needs of small to medium-sized commercial spaces in the Lexington Park, MD area. Our light commercial HVAC services are designed to ensure your business operates smoothly, no matter the season.


Whether you need repair services, new installations, or routine maintenance, we've got you covered. Our team is dedicated to providing personalized comfort plans tailored to your specific requirements.


Our services include:


  • Repair services for any HVAC issues
  • Installation of HVAC systems
  • Routine maintenance for optimal performance
  • Building automation
  • 24-hour emergency response


Contact us today to discuss your HVAC needs.


Choose Your Light Commercial HVAC Services

We offer custom, personalized comfort plans designed to meet your unique HVAC situation and system.


Packaged Systems:

  • Compact units ideal for buildings with limited space
  • Combined condenser, fan coil, evaporator, thermostat, and compressor in one unit
  • Popular in hotels and condos for economical room-by-room temperature control

Split Systems:

  • Suited for larger spaces and small offices
  • Connecting to existing ductwork for precise temperature control
  • Requires individual units for each area, which can clutter the roof or exterior
    .

Rooftop (RTU) Systems:

  • Large, packaged units installed on flat roofs
  • Combined heating and cooling capabilities in one system
  • Highly efficient and best suited for buildings under 10 stories


VRF (Ductless) Systems:

  • Ductless units using heat recovery to transfer heat where needed
  • Compact, quiet, and 30% more efficient than traditional ducted systems
  • Ideal for businesses prioritizing energy efficiency and space-saving


Contact us today for help in choosing the system that works best for your business. Be sure to ask us about our targeted maintenance contracts and agreements, too!


Benefits of Choosing Great Mills Heating & A/C

When you choose Great Mills Heating & A/C for your light commercial HVAC needs, you’re opting for quality, reliability, and exceptional service. Here’s what sets us apart:


  • Local, family-owned and -operated company
  • Serving St. Mary's and Calvert County, MD, since 1972
  • Same-day free estimates on new equipment
  • SMECO rebate
  • Licensed and insured (License #50494)
  • Same-day or next-day service
  • Manufacturer warranties and extended warranties
  • Extended labor warranty
  • Standard one-year labor warranty on commercial equipment
  • NFIB - National Federation of Independent Business
  • NATE Certified - North American Technician Excellence
  • HVAC master license
  • Factory-trained technicians


Reach out to us today to experience the benefits of our professional HVAC services.


Get in Touch with Us

Your business deserves the best HVAC services available. Contact Great Mills Heating & A/C to discuss your light commercial HVAC program.


Find out how we can help you maintain a comfortable and efficient environment for you, your employees, and your customers.

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Custom HVAC Plans for Light Commercial

Get Warrantied Products and Services

(301) 507-4054

(301) 507-4054

1-Year Warranty

Great Mills Heating & A/C, Inc offers a standard one-year labor warranty on commercial equipment. Call for details.

(301) 507-4054

(301) 507-4054
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