With chilly weather now taking hold, a functioning heating system will provide potentially life-saving comfort in the coming months. Fortunately, there are a number of options for quality HVAC services to choose from around Fairfax County.
Here are the top HVAC companies in Fairfax, Virginia. These companies servicing Fairfax County are trusted by locals for their professional, honest customer service and the expertise of their technicians.
Top vote getters
1. M.E. Flow
8580 Cinder Bed Road, Suite 200, Lorton
Serving Northern Virginia with offices in Lorton and Leesburg, M.E. Flow’s technicians provide HVAC services from routine maintenance and installations to emergency repairs and even indoor air and water quality testing. Customers, some of them loyal for decades, praise the company for its professionalism, honesty and responsiveness.
2. Richards Heating & Air Conditioning Co.
200 Hillwood Avenue, Falls Church
This family-owned and -operated HVAC contractor has been serving the D.C. region since 1959, with locations in Rockville and Ashburn in addition to Falls Church. Recognized in the past by Arlington Magazine and Nextdoor, among other awards, Richards has received strong reviews attesting to its fair prices, excellent service and willingness to accommodate individual customers’ needs.
3. Air Treatment Heating & Cooling
518 Mill Street NE, Vienna
Serving Fairfax, Loudoun and Arlington for over 58 years, Air Treatment Heating & Cooling promises professional and on-time service with perks that include free estimates, upfront pricing and $50 off for new customers. Reviews back up those commitments, praising the company for the efficiency and quality of its services.
Other notable spots
- B&B Air Conditioning & Heating Service
- Fairfax Cooling & Heating Company
- John Nugent and Sons
- Ace Air Conditioning and Heating Services
- Climatic Heating & Cooling
- Bluestar Air Mechanical
Return to: FFXnow Readers’ Choice
Last vote: Poll: The best HVAC company in Fairfax County
Last updated: Nov. 14, 2025