7 AC Installation Contractors in Fairfax, VA
Get Free AC Installation Quotes in Fairfax, VA
Not ready to call? Tell us what you need and we'll connect you with top-rated contractors.
Top-Rated AC Installation Contractors in Fairfax
CroppMetcalfe
“Technicians AJ Morton, David Carter, and Mr. O'Connor each receive named recognition across multiple 5-star reviews, suggesting a consistent team of…”
OHA HVAC, Plumbing, Chimney & Fireplaces
“Across 1,905 reviews, 12 reviewers specifically mention same-day or emergency response, with several noting arrival during heat waves or holiday weekends.…”
All AC Installation Contractors (7 total)
Argent Heating Cooling and Plumbing
“Across 401 reviews, technicians William, Miguel, and Johnnie appear repeatedly in five-star feedback for…”
AVS Heating and Air Conditioning
“Of 8 named reviewers, 5 specifically mention same-day or sub-hour emergency response, with two noting arrival…”
Long's Corporation
“116 reviewers award Long's Corporation a 4.6-star average, with at least 5 specifically praising honest…”
AC Installation Costs in Fairfax
New central AC installation costs in Fairfax, by system type and brand.
| Service | Low | Average | High |
|---|---|---|---|
Window unit | $150 | $350 | $700 |
Ductless mini-split (single zone) | $2,000 | $4,500 | $8,000 |
Central AC replacement (existing ducts) | $3,500 | $6,500 | $12,000 |
Central AC new install (with ductwork) | $7,000 | $12,000 | $20,000 |
Carrier (residential) | $3,800 | $6,200 | $10,500 |
Trane (residential) | $5,000 | $8,800 | $13,600 |
Lennox (residential) | $3,500 | $6,500 | $12,000 |
Rheem (residential) | $3,200 | $5,500 | $9,000 |
Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
AC Installation in Fairfax, VA: What to Expect
Fairfax sits in Northern Virginia's humid Potomac River corridor — summers reach 88°F with significant humidity, and winters average 28°F. That combination makes central air conditioning a genuine necessity rather than a convenience. The Fairfax AC installation market is compact but well-reviewed: 5 contractors carry a standout 4.9 average across 10,500+ reviews, with 3 offering 24/7 availability.
Installation costs span a wide range depending on system type. Window units start at $150-$700. Ductless mini-splits run $2,000-$8,000 per zone. Central AC replacement with existing ductwork typically lands at $3,500-$12,000, and full new-construction installs can reach $20,000. Virginia contractors must hold a Class A, B, or C Contractor License with HVA specialty from the Virginia Department of Professional and Occupational Regulation (DPOR) — the class tier corresponds to project size.
CroppMetcalfe earns consistent praise for professional conduct and on-time arrivals. OHA HVAC, Plumbing, Chimney & Fireplaces receives high marks for technicians who leave work areas clean after installation, a detail multiple reviewers mention specifically. Bluestar Air Mechanical mirrors that pattern, with reviewers noting clean job sites and professional crews — both companies carry reviews where every sampled customer awarded a 5-star rating.