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Contact Mannix Heating and Cooling for HVAC and Pool Heat Pump Service Today!

With years of experience under our belt, we are dedicated to ensuring that your home or business stays comfortable all year round. Our skilled technicians are proficient in servicing all types of HVAC systems, delivering top-tier workmanship and customer service.

As the go-to HVAC contractor in Potomac, we take pride in our comprehensive services. These range from routine maintenance and repair to full system installation. We only use the highest quality products and equipment in our service provision, always ensuring that our customers are happy with the results. Moreover, we understand that HVAC issues can happen at any time — that’s why we offer emergency HVAC services to take care of those unexpected incidents.

Quality HVAC Services: Repairs, Replacements, and Installations

Our team is armed with knowledge and expertise in a broad range of HVAC services. Whether your faulty heating system needs a repair or it’s time to replace your cooling system, we’ve got you covered. Our service also extends to the installation of new HVAC systems, helping Potomac residents enjoy the benefits of a high-efficiency HVAC system, including energy savings and improved indoor air quality.

Beyond repairs and installations, we understand the importance of preventive maintenance in extending the lifespan of your HVAC system. Our maintenance plans are designed to keep your heating and cooling systems running smoothly, spotting potential issues before they lead to major breakdowns or inefficiencies. We carry out thorough inspections and necessary tune-ups, saving you time, money, and potential frustrations long term.

Eco-Friendly HVAC Solutions

At Mannix Heating and Cooling, we strive to provide HVAC solutions that do not only improve comfort but also are environmentally friendly. We promote the use of energy-efficient HVAC systems and employ eco-friendly practices in our service provision. By choosing us, you are making a positive contribution towards reducing the carbon footprint and making Potomac, Maryland a healthier and more sustainable place to live.

Our commitment to delivering exceptional customer service sets us apart from the competition. When you choose Mannix Heating and Cooling, you are choosing a partner who is ready to walk with you every step of the way. We take the time to understand your heating and cooling needs, providing tailored services that are right for you. Choose us today for unmatched HVAC services in Potomac, MD.

We’re in Your Neighborhood

Whether you’re in Gaithersburg, MD, Chantilly, VA, or Treasure Island, FL, our local teams are ready with 24-hour answering service and experienced technicians who keep your systems running when you need them most.

Gaithersburg, MD

7824 Beechcraft Ave
Gaithersburg, MD, 20879
(301) 260-6000

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Chantilly, VA

26955 Gum Spring Road
Chantilly, VA, 20152
(703) 777-9211

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Treasure Island, FL

10625 1st Street E. Suite 200
Treasure Island, FL, 33706
(727) 999-7002

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HVAC Maintenance

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Comprehensive Climate Control Solutions

Our comprehensive approach encompasses everything from routine maintenance to complete system overhauls, ensuring optimal performance throughout every season. We specialize in both residential and commercial applications, understanding that each environment presents unique challenges requiring customized solutions.

Mannix Rewards

Receive up to $100 Mannix Heating & Cooling Visa® Prepaid Card

Customer Referral Program

Customer Reviews
Mannix has always been professional from service calls to repairs and replacements. The technicians are always polite and knowledgeable. They consistently exceed our expectations.
Wendy Collins Leave a Review
Customer Reviews
They were lifesavers!!! My furnace went out and after three days of dealing with the home warranty company and the unscrupulous vendor they sent to my home, I called Mannix. The service technician was friendly, efficient but most of all honest. He found the problem after twenty minutes, saving...
Shondra J ones Leave a Review
Customer Reviews
I’ve been using Mannix for years and have never been disappointed. They’ve replaced my HVAC, hot water heater and installed a humidifier on my furnace. Whenever I need them, they can get me on the schedule in a timely manner. All the personnel are great and I trust Jerry and his team...
Rachel Craft Leave a Review
Customer Reviews
I have been using Mannix for years. They have replaced my HVAC system and I have them do maintenance twice a year. The past couple of visits have been done by Ramiro. He is professional, polite, knowledgeable, and very helpful in assisting me with tips on the best ways to operate my system. Today,...
Patricia Ryan Leave a Review
Customer Reviews
Before dealing with Mannix I used two very well-known and “reputable” HVAC companies who did nothing but rip us off over the years. I was frustrated and found Mannix Heating & Cooling about 10 years ago. They installed a new HVAC system in my old home, and installed a water...
Customer Reviews
My 24-year-old heat pump finally decided to stop working. I sent a request for a replacement estimate late one night through the Mannix website and received a phone call early the very next morning to set up an appointment. Eric Holzworth stopped by my house the next day to go over my options. He...
Customer Reviews
We were in desperate need of a fix on our AC system during the July heatwave. The issue arose on a Saturday. Mannix came to the rescue in short order, fixed it, and at a reasonable price. Silvio G was the technician, and he was GREAT. We would definitely use Mannix again!
Customer Reviews
Mannix proved very responsive in fixing my A/C system. The tech, Erick, was very professional by taking the time showing and explaining to me the system problem prior to taking action replacing the coil. Ashleigh, customer service, was excellent in addressing and following through on concerns in...
Gary Hendricks Leave a Review
Customer Reviews
I contacted Mannix from a referral of a friend who has benefitted from the excellent service this company provides. I found out a couple I know in Vienna had their heat pump stop working a few months ago and needed to be replaced. I called up the Mannix office later in the day on Monday 11/30/20...
Lynne Wilson Leave a Review
Customer Reviews
Been a happy Mannix customer for a few years now, but recently had them replace our aging HVAC system. The whole process was very painless, from Eric helping us decide which system was right for our home, to the efficient and professional installation by Billy and Matt. I am very pleased with the...
Philip Slingerland Leave a Review
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