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MD (301) 260-6000 VA (703) 777-9211

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Certified HVAC Services in Leesburg, VA

Proudly serving Leesburg, Virginia, Mannix Heating & Cooling is committed to providing top-quality heating and air conditioning services. Our reputation as a leading HVAC contractor has been built on years of delivering reliable, efficient, and effective solutions for our clientele in Leesburg and beyond. Our team of certified technicians is highly skilled in their trade and ready to respond to the challenges that Virginia’s diverse climate often presents to its residents.

Understanding that every building has unique needs, our goal is to tailor HVAC solutions that precisely meet those demands. Whether you need an installation for a new construction, a service breakthrough for an aging system, or anything in between, we have the expertise and resources to get the job done. In addition, we provide essential HVAC maintenance to prolong the life expectancy of your units while ensuring consistent performance and enhanced energy efficiency all year round.

HVAC Services: More Than Just Cold and Warm Air

At Mannix Heating & Cooling, we firmly believe that HVAC services are more than just providing cold or warm air. It’s about creating a comfortable, safe, and healthy environment for families in Leesburg and the surrounding areas. That’s why we also offer services like indoor air quality checks and improvements, humidity control solutions, and energy-saving strategies. These services help us live up to our commitment of offering comprehensive solutions for the varied HVAC needs of our clients.

Our technicians at Mannix Heating & Cooling are dedicated to seamless workmanship and unparalleled customer service. Regularly updated with the latest industry knowledge and techniques, you can expect to receive the most modern solutions delivered by experts who care about your satisfaction. We’ve been a community staple in Leesburg thanks to our consistent delivery of quality HVAC solutions for everyone from homeowners to large organizations.

Experience the Mannix Heating & Cooling Difference in Leesburg, VA

Our focus is to provide elegantly simple solutions to complex HVAC problems while ensuring that our customers fully understand the work we are doing. We pride ourselves on transparency, reinforcing the trust that Leesburg residents have consistently placed in us over the years. Mannix Heating & Cooling, your go-to HVAC contractor in Leesburg, VA, stands ready to meet all your heating, cooling, and air conditioning needs.

Expect nothing but the best when you choose us, as we endeavor to exceed your expectations and deliver an HVAC service that truly stands out. Experience the Mannix Heating & Cooling difference in Leesburg, VA today.

Heating Installation, HVAC Near Me, Furnace Repair & AC Service in Leesburg, VA

AC Service in Leesburg, VA | Heating Installation

Furnace RepairAC ServiceHVAC Near MeHeating Installation ∴ Leesburg, VA

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Customer Reviews

Shondra J ones

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 me thousands in unnecessary replacement costs. It is refreshing to know that honest people still exist.

Lynne Wilson

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 and provided information needed. I had a proposal in my email the next morning 12-01-20. This will enable me to discuss with my friends how they wish to proceed with fair financing options available too. This is EXCELLENT customer service and I would like Mr. Mannix to know that Sarah is an amazing professional face for his company. I plan to become a customer of theirs by signing up for the annual maintenance plan which is very reasonable priced. Sincerely, Lynne Wilson

Philip Slingerland

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 new system and very impressed with the level of service, communication, and detailed information I received from everyone involved. Highly recommend!


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 heater and various other items in my new home. They also have been doing yearly maintenance for years. Their employees are the most honest, reliable, and knowledgeable individuals in this industry. We recently had an issue with our HVAC system and they came out within a few hours on an emergency call. The technician was prompt, kind, professional, and very fair. He figured out what was wrong with our system quickly and remedied it immediately. Do not hesitate to call them if you need anything–you won’t regret it!

Wendy Collins

Mannix has always been professional from service calls to repairs and replacements. The technicians are always polite and knowledgeable. They consistently exceed our expectations.

Gary Hendricks

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 order to achieve total customer satisfaction.

M. Reyzer

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 was wonderful and so easy to work with and answered every question I had. He definitely listened to me and my concerns did not push me into purchasing a high-end system which I didn’t need. The technicians arrived at 8am and were finished with the entire installation by 1pm. They were very courteous and left my house in pristine condition. I HIGHLY recommend Mannix! They always returned my calls and emails right away, and Eric made sure I received all of my equipment on time–even with Carrier factory delays/limited supplies due to COVID. So glad I chose Mannix. I love my brand new Carrier system and my cold house during these hot and humid days.


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!

Patricia Ryan

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, he installed a water safety device and taught me exactly how it works and how to reset it. I’m so impressed with him! I will continue with Mannix for years to come as I find them to be very reputable and reliable. Thank you!

Rachel Craft

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 with their recommendations and the work they do. Would highly recommend.

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