HVAC Service in Fairfax, VA — All Makes, All Buildings, One Contractor

Multi-Family HVAC Services We Provide in Fairfax County

Fairfax County has more apartment and condo stock than any other jurisdiction in Virginia, and that housing spans decades of construction and half a dozen system types. Older garden-style communities along Route 50 and Route 29 typically run Aqua-Therm air handlers or water source heat pumps. Newer Tysons-area buildings lean on high-efficiency split systems and rooftop units. Most HVAC contractors are built for one or the other — not both.

 

We service all of them. Our technicians work on Aqua-Therm units, water source heat pumps, rooftop units, split furnace and heat pump systems, and split ductless systems. If you're managing a portfolio with buildings from different eras, you don't need separate contractors for each. You need one contractor who knows all the equipment — and that's what we are.

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ASG serves Fairfax County as part of a broader service footprint that includes Arlington, Sterling, Alexandria, McLean, Reston, Herndon, Ashburn, Washington DC, Bethesda, Rockville, and Silver Spring. If you manage properties across multiple jurisdictions in the DMV, we can cover them. One contractor, one point of contact, consistent work across the region.

Licensed Across Virginia — Not Just Your Zip Code

We cover the full range of commercial and multi-family HVAC systems in Fairfax County, including:

 

  • Aqua-Therm air handler repair, maintenance, and replacement
  • Water source heat pump service for mid-rise and garden-style communities
  • Rooftop unit maintenance and repair
  • Split furnace and heat pump system installation and service
  • Split ductless system installation and repair
  • Garage exhaust and supply fan service
  • Residential heating and cooling repair and replacement
  • Service agreements for single properties and multi-property portfolios

The Truck You See Is Our Truck

ASG is not a dispatch company. We don't sign a service contract and then hand the work to a subcontractor you've never met. Our branded fleet is staffed by our own technicians — the same people who show up for the first call are the same people managing your account. For property managers overseeing multiple buildings, that consistency matters. You know who's coming, you know their work, and you're not starting over every time a unit goes down.

Service Agreements Built for Fairfax Property Managers

Portfolio-scale management means you can't afford reactive-only maintenance. Our service agreements are structured for property managers who need scheduled preventive maintenance, priority response, and a contractor relationship that doesn't require re-explaining your buildings every season. We offer agreements for individual properties and multi-property portfolios across Fairfax County, covering all system types we service. Consistent maintenance reduces emergency calls, extends equipment life, and gives you documentation for ownership and ownership's questions.

Common Questions About HVAC Service in Fairfax, VA

  • Do you service both older and newer apartment buildings in Fairfax County?

    Yes. We work on the full range of multi-family system types found across Fairfax County, including Aqua-Therm air handlers and water source heat pumps common in older garden-style buildings, and modern split systems and rooftop units in newer construction. Building vintage doesn't limit what we can service.

  • Is ASG licensed to work in Fairfax County specifically?

    ASG holds Virginia contractor licensing that covers Fairfax County and the broader Northern Virginia region. We're also licensed and insured in Maryland and Washington, DC, which matters for property managers whose portfolios cross state lines.

  • Can you handle HVAC service for multiple properties across Fairfax County under one agreement?

    Yes. Our service agreements are designed to accommodate multi-property portfolios. We can structure scheduled maintenance and priority response coverage across multiple buildings, regardless of whether they run the same system type.

  • What areas of Fairfax County do you serve?

    We cover the full county, including Tysons, Vienna, Centreville, Chantilly, and properties along the Route 50 and Route 66 corridors. Our team operates out of Sterling and moves throughout Northern Virginia regularly.