6 HVAC Service Contractors in Fairfax, VA
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Top-Rated HVAC Service 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 HVAC Service Contractors (6 total)
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…”
HVAC Service Costs in Fairfax
General HVAC service pricing across maintenance, repair, and installation in Fairfax.
| Service | Low | Average | High |
|---|---|---|---|
Service call / diagnostic | $75 | $120 | $200 |
Routine tune-up (single system) | $70 | $125 | $200 |
Standard repair (avg) | $150 | $600 | $1,200 |
Major repair (compressor, heat exchanger) | $1,500 | $2,500 | $3,500 |
New system installation (mid-range) | $6,500 | $10,500 | $14,000 |
Full HVAC replacement AC + furnace combined | $11,590 | $13,430 | $14,100 |
Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
HVAC Service in Fairfax, VA: What to Expect
Northern Virginia's climate puts real work on HVAC systems — 88°F humid summers and 28°F winter averages mean both heating and cooling see heavy seasonal use in Fairfax. The full-service HVAC market here is focused: 6 contractors hold a 4.8 average rating across more than 10,600 reviews, with 4 offering 24/7 availability for urgent repairs and off-hours calls.
Service call and diagnostic fees run $75-$200. Routine tune-ups cost $70-$200 per system, and standard repairs average $150-$1,200. Larger system replacements can reach $14,100. Virginia's DPOR requires contractors to hold a Class A, B, or C Contractor License with HVA specialty — the tier scales with job size, so confirming which class applies to your project is worth a quick question before work begins.
CroppMetcalfe earns consistent marks for professionalism and scheduling reliability. OHA HVAC, Plumbing, Chimney & Fireplaces receives near-universal 5-star ratings in sampled reviews, with customers noting technicians arrive on time and clean up after themselves. Bluestar Air Mechanical shows the same pattern in customer feedback — professional crews, tidy job sites, and strong word-of-mouth across the Northern Virginia market.