9 Commercial HVAC Contractors in Ashburn, VA

3.9 avg rating
924 total reviews3 offer 24/7 service
Need emergency service? 10 HVAC providers in Ashburn offer 24/7 availability

Top-Rated Commercial HVAC Contractors in Ashburn

#1

One Hour

4.6(543 reviews)

Two negative reviews cite markup percentages for parts and labor charges, with specific criticism directed at capacitor replacement pricing and overtime rate…

21730 Red Rum Dr Suite 182, Ashburn, VA 20147
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#2

Premier Home Comfort

5.0(249 reviews)
24/7 Highly Rated

Every reviewer awarded a 5-star rating across this sample, with two specifically referencing successful same-day installations and customer education around…

22645 Upperville Heights Square, Ashburn, VA 20148
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#3

Modern Mechanical

4.1(72 reviews)

All four featured five-star reviews reference specific technicians by name, with customers praising honesty in recommendations, same-day arrival…

21730 Red Rum Dr Suite 182, Ashburn, VA 20147
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All Commercial HVAC Contractors (9 total)

VIP General HVAC Services

5.0(25)
24/7

All eight reviewed customers awarded 5 stars, with three specifically praising technician Hector for his…

42683 Tunstall Terrace, Ashburn, VA 20147
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LTJ Electric

4.7(19)

Eight reviews yield a 4.7 average rating, with seven five-star ratings citing same-day service, upfront…

Building G, 44679 Endicott Dr Suite 300 #1015, Ashburn, VA 20147
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Ashburn

4.0(12)

12 reviews yield a 4.0-star average. Positive reviews consistently praise honest service, same-day…

21750 Red Rum Dr #122, Ashburn, VA 20147
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United Products Distributors, Inc.

5.0(2)

Both reviewers awarded perfect 5-star ratings, with one explicitly mentioning no issues during their service…

44611 Guilford Dr Suite 160, Ashburn, VA 20147
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Carrier Commercial Service

3.0(2)
24/7

With only two total reviews on record, the average rating stands at 3.0 stars. One reviewer assigned one star…

21750 Red Rum Dr Suite 192, Ashburn, VA 20147
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Quote My HVAC

0.0

No customer reviews exist for this business listing, making review-derived claims unavailable.

21750 Red Rum Dr #162, Ashburn, VA 20147
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Commercial HVAC Costs in Ashburn

Commercial system pricing in Ashburn. Actual costs vary significantly by building size and system type. Request a site-specific quote.

ServiceLowAverageHigh
Annual maintenance (per rooftop unit)
Quarterly inspections
$500$1,000$2,000
Annual contract (small business, < 5K sqft)
$1,000$2,500$5,000
Annual contract (mid-size, 5K-25K sqft)
$3,500$6,500$10,000
Basic rooftop unit replacement
$6,500$10,000$15,000
Small business full system (< 5K sqft)
$8,000$16,000$25,000
Mid-size building (5K-25K sqft)
$25,000$50,000$80,000
Operating cost (per sqft annually)
Utility + maintenance
$2$4$6

Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.

Commercial HVAC in Ashburn, VA: What to Expect

Ashburn experiences a climate that keeps commercial HVAC systems working year round. Summer temperatures reach 88 degrees along the Potomac with humidity that makes cooling systems labor hard, while winters drop to an average of 28 degrees, pushing heating equipment to its limits. This back and forth between seasons defines the demand for Commercial HVAC in Ashburn, where ten contractors compete for business across a market that has earned an average rating of 4.0 based on more than 1,600 client reviews, with three of those companies offering around the clock service.

Virginia law adds another layer. All commercial HVAC contractors must hold the appropriate Class A, B, or C license with an HVA specialty from the state Department of Professional and Occupational Regulation, with classification based on annual project volume. For business owners planning budgets, annual maintenance on a single rooftop unit typically runs between $500 and $2,000, while a small business covering less than 5,000 square feet can expect to pay between $1,000 and $5,000 yearly under a service contract, and mid size buildings between 5,000 and 25,000 square feet usually fall in the $3,500 to $10,000 range.

The feedback tells a clearer story than ratings alone. Premier Home Comfort maintains a perfect 5.0 average with every reviewer giving five stars, and two customers specifically mention same day installations plus helpful guidance on how their thermostats work. Modern Mechanical also draws consistent praise across four detailed reviews, with clients mentioning technicians by name and appreciating honest recommendations, same day arrivals, and careful installation work. One Hour, despite a lower 4.6 rating, receives positive notes too, though a few reviewers have flagged concerns about parts markups and overtime charges, particularly around capacitor replacements.

Frequently Asked Questions

Commercial HVAC in Ashburn varies widely by building size. Annual maintenance contracts run $1,000-$10,000+ depending on unit count and service frequency. Rooftop unit replacement starts around $6,500-$15,000, small business systems (<5K sqft) run $8,000-$25,000, and mid-size buildings cost $25,000-$80,000 installed.

All HVAC Contractors in Ashburn, VA

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