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

Understanding the specific needs of the Damascus climate, Mannix Heating and Cooling invested time and effort into placing the locals’ comfort and convenience atop the priority list, no matter what the season or temperature might be.

Mannix Heating and Cooling offers a comprehensive range of HVAC services, covering all the bases from routine maintenance, repairs to the full system replacement. We understand that each home is unique and so are the needs of its inhabitants. That’s why we tailor our services to fit the unique requirements of each client, ensuring you receive the heating and cooling solution that’s perfect for your home and lifestyle. What truly sets us apart, though, is the standard of our service. Our technicians are not just skilled, they are also passionate about what they do and are committed to ensuring the optimal operation of your HVAC systems.

Year-Round Comfort with Our HVAC Contractor Services

Damascus is known for its distinct winter chill and hot, humid summers, making it essential for homeowners to have a reliable HVAC system. At Mannix Heating and Cooling, we understand this need fully. We specialize in installing high-efficiency heating and cooling systems that provide perfect indoor comfort all year long. But it doesn’t stop with installation. We ensure routine maintenance to prolong the life of your equipment, laid by our commitment to using only the highest quality parts and state-of-the-art equipment.

At Mannix Heating and Cooling, we believe you should never have to compromise on your comfort. That’s why we provide emergency HVAC services in Damascus, so you know you have a reliable team to call on when things go wrong. Whether it’s a furnace that has stopped working in the dead of winter or an air conditioner that’s given out in the height of summer, our technicians are ready to provide professional, efficient service at all hours of the day.

Contact Mannix Heating and Cooling for HVAC in Damascus Today

With decades of experience under our belts, we bring a level of expertise that is incomparable in Damascus, Maryland. We have built our reputation on trust, integrity, and a steadfast commitment to providing the best HVAC solutions for every client. When you hire Mannix Heating and Cooling as your HVAC contractor, you are not just getting a provider; you are getting a partner. A partner who will work with you to ensure your heating and cooling systems run efficiently, today, tomorrow, and in the long run. We strive to exceed your expectations, not just meet them. Remember, it’s not just about comfort; it’s about the comfort delivered by Mannix Heating and Cooling. Experience the difference today.

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
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
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
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
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
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
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
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
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
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
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
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