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

A homeowner in Tarpon Springs, FL called our office recently to report that their indoor A/C system was leaking water into their hallway. Our technician visited the home and found that the drain line was clogged. After cleaning and vacuuming the drain line, we replaced the filter and the unit is now up and running again. We want to remind our customers that this type of issue is why it is so important to have yearly maintenance done on your HVAC system. A clogged drain line can cause water to leak from your A/C system and damage your floors, walls, and furniture. It can also create a breeding ground for mold and mildew, which can cause health problems. By having your system maintained regularly, you can help prevent these types of problems and keep your home comfortable and healthy.

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A Treasure Island, FL resident had his current HVAC system destroyed by a recent hurricane. He called us for assistance and we installed a Rheem Heat Pump and a variable speed Air Handler in his home. This new system has given him the ability to stay comfortable in all seasons. He is now able to enjoy his home without having to worry about his HVAC system

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Here, we installed 2 mini-split systems at a home in Treasure Island, FL. Now these homeowners will stay cool in the Florida heat.

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One of our customers in Alexandria, VA gave us a call because her furnace stopped working. Upon inspection, our technician found a faulty wheel and blower motor. Her system was 20 years old so she decided to go ahead and replace it with a Carrier heat pump and fan coil. Now this homeowner will stay warm for the rest of the winter and many years to come.

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One of our Purcellville, VA customers gave us a call when she found her current HVAC system leaking water in her basement. After speaking with our technician, she decided to replace the 24 yearold system. We installed a new Carrier Comfort system and she no longer has to worry about it.

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A homeowner in Gaithersburg, MD gave us a call when they discovered they had no heat in their home. His system was very old and it was time to get a new one. The Mannix team quickly installed a new Carrier Comfort HVAC system.

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During a routine maintenance check at a home in Burke, VA, our technician found this homeowner’s humidifier not working. Due to age, it was time to replace it. We installed an AprilAire humidifer. Keeping your home’s humidity properly balanced helps improve your immune system’s response and fights against dry air issues.

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For this one, we replaced a furnace for a homeowner in Herndon , VA (zip code: 20171) due to old age. We installed a new Carrier furnace and a Google Nest Thermostat.

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For this one, we installed a Mitsubishi mini-split system to make this Fairfax, VA (zip code: 22033) homeowner’s sunroom more comfortable.

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A homeowner in St. Pete Beach, FL contacted us when her pool heat pump stopped working. After a thorough inspection, our technician discovered extensive corrosion inside the electrical box caused by the unit being submerged during a recent flood. Unfortunately, the damage made the system beyond repair.

The homeowner chose to move forward with a replacement for long-term reliability and peace of mind. We installed a new AquaCal 3-ton pool heat pump and elevated the unit 24 inches to help protect it from potential future flooding.

With the new system in place, the customer can once again enjoy a comfortably heated pool—this time with added protection and confidence.

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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.

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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
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
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
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
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
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
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
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...
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