Skip to content
Menu
Contact Mannix Heating and Cooling for HVAC and Pool Heat Pump Service Today!

We have always prioritized the comfort of our clients’ homes, offering an array of top-notch heating, cooling, and air quality services. Our experienced technicians are well-versed in tackling all types of HVAC problems, employing innovative solutions that suit every individual’s unique requirements. Time and again, we have proven our expertise in designing and implementing comprehensive HVAC strategies that keep your home comfortable and ensure the longevity of your systems.

At Mannix Heating and Cooling, we provide a gamut of HVAC services to meet all your heating and cooling needs. From routine maintenance to emergency repairs and new installations, we handle it all with unparalleled professionalism. Understanding that a well-maintained HVAC system is pivotal to a comfortable home environment, we promote preventive maintenance which helps to minimize the risk of future breakdowns, optimize system performance, and save on energy costs. When it comes to emergency HVAC repairs, our dedicated team of professionals is available round-the-clock to detect and address the issue promptly and efficiently.

Your Trusted HVAC Contractor

Customer satisfaction is at the heart of our service philosophy. As a seasoned HVAC contractor in Clarksburg, we have established strong credibility and trust among our esteemed clientele. Our work isn’t done until you’re completely satisfied; this commitment to excellence sets us apart in the industry. Besides, we advocate for enhancements in energy efficiency and indoor air quality. For this, we offer a selection of energy-efficient HVAC systems and solutions that minimize your carbon footprint, reduce energy bills, and contribute to a healthier, cleaner indoor atmosphere.

At Mannix Heating and Cooling, we go the extra mile to educate our clients about their HVAC systems. From informed decision-making on suitable systems to ongoing maintenance guidelines, we ensure that you are always in the loop. This open and transparent communication approach has endeared us to numerous households in Clarksburg, MD. We view every new project as an opportunity to demonstrate our unwavering dedication to creating heating and cooling solutions tailored to your needs.

Contact Mannix Heating and Cooling for HVAC Services in Clarksburg Today

We understand that choosing a HVAC contractor is a significant decision. Rest assured, as your trusted partner, Mannix Heating and Cooling not only promises reliable and prompt service but also provides a customer experience you will be eager to recommend. Serving Clarksburg, MD and the surrounding communities, our mission is to maintain your home’s comfort level while optimizing system functionality and energy efficiency. Connect with us today for all your heating and cooling needs. Teachers, military, and senior citizens receive special discounts. Mannix Heating and Cooling – Where Comfort Meets Quality!

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

View Location

Chantilly, VA

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

View Location

Treasure Island, FL

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

View Location

HVAC Maintenance

Mannix Heating and Cooling Logo

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
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
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
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
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
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
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
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...
Logo Tagline Vertical RGB BlueText 8a2c4953 640w
CAR CFAD Badge 4C PNG
Nate certified
Bbb a
Customer First Award Badge Website and OnCall Air
Checkbook e1667851825686
Angies 2019
Angies 2018
ACCA Logo
2019 pa new
2016 pa new
2015 pa new