Fall Specials!
Service diagnostic call special of $80 (normally $120) from now till December 31, 2023.
Cannot be combined with other offers
Need filters, humidifier pads or humidifier canisters for your upcoming maintenance visit? – CLICK HERE
Don’t Panic, Call Mannix!
Mannix Heating & Cooling is a family owned and operated HVAC company serving Gaithersburg, MD, Chantilly, VA and their surrounding areas since 2010, and serving St. Petersburg, FL and the surrounding areas since 2024.
Ask us about how to qualify for a $2,000 tax credit for a heat pump – LEARN MORE
We’ll Be Here When You Need Us
HVAC Services you can rely on.
Heating
No matter what type of heating system you rely on, whether at the beginning or toward the end of it’s service life, the key to safe, efficient, and reliable performance is regular, professional maintenance.
Cooling
Anything less than perfect performance from your cooling system is unacceptable. Even minor issues impact your everyday life, causing discomfort, aggravation, and higher running costs.
Air Quality
Integrity of indoor air quality impacts your health, how well you sleep, efficiency of HVAC components, productivity, and furnishings. Mannix Heating & Cooling will find the right solution for you.
Your Local HVAC Repair Service Montgomery Village, Gaithersburg, Rockville and Olney, MD as well as Chantilly, Centreville, and Dulles, VAAC Repair, Heating Repair, HVAC Service, Air Conditioning Installation & Furnace Service
Mannix Heating & Cooling meets higher standards of quality. For heating, cooling and electrical needs in Gaithersburg, MD, Chantilly, VA and their surrounding areas and the surrounding areas, we offer home and business owners a comprehensive range of services, including installation, upgrades, seasonal maintenance, and prompt repair. We have earned distinction as a Carrier Factory Authorized Dealer, maintaining rigid criteria for customer satisfaction, technical expertise, and ethical business practices.
Top Quality HVAC, Electrical, and Water Heating Services across Montgomery Village, Gaithersburg, Rockville and Olney, MD as well as Chantilly, Centreville, and Dulles, VA
At Mannix Heating & Cooling, we handle residential and commercial projects, achieving ideal comfort within your indoor space. By putting greater access and tighter control at your fingertips, we give you the power to tailor your environment to your exact preferences. Combining dedicated professionalism with exceptional products, Mannix Heating & Cooling delivers results that fulfill your ongoing satisfaction.
Call Mannix Heating & Cooling to ensure your home comfort with expert heating and cooling system repairs, installations, and maintenance!
Mannix Heating & Cooling services all major manufacturers and models of heating and cooling equipment, as well as standby generators. We recommend and install Carrier HVAC systems and Honeywell backup generators, offering home and business owners premier solutions that meet our exacting demands for value. By specializing in the most technologically advanced options on the market, we satisfy even difficult challenges with solutions that stand up to time and weather, day in and day out, year after year. At Mannix Heating & Cooling we implement products and strategies that exceed expectations, improve your indoor environment, and make life that much better. Throughout Montgomery Village, Gaithersburg, Rockville and Olney, MD as well as Chantilly, Centreville, and Dulles, VA, the team from Mannix Heating & Cooling is known as … Just Honest, Fair, Good People.
Owner, Jerry Mannix
The Proud Recipient of Federated Insurance’s ACCA Super S.T.A.R. Award!