Tenants are calling the landlord
In a Chantilly flex building, one suite that’s always too hot while the next is fine usually means one rooftop unit is failing, not the whole roof. A zone-by-zone check finds which one.
Chantilly, Virginia
Commercial HVAC in Chantilly.
For commercial HVAC in Chantilly, every commercial job is priced at your building, in writing, before any work. Call SwiftPro, rated 5.0 stars across 1,130 reviews, at (703) 997-9757, 24 hours a day, 7 days a week.
For commercial HVAC and refrigeration in Chantilly, SwiftPro is rated 5.0 stars across 1,130 reviews and works under Virginia Class A contractor license 2705192276. Commercial HVAC in Chantilly, where our shop is: rooftop units on the flex buildings along Route 28, split systems in offices and clinics, walk-ins. A repair is priced once we’ve found the fault, a replacement once we’ve seen the roof, the curb and the crane access.
- Priced in writing at your building
- Our own licensed HVAC techs
- 24/7 emergency service
5.0 stars across 1,130 reviews
Three of our HVAC technicians on a commercial roof beside a new rooftop unit, panels open for startup.
Get your price in writing
Send this and the office calls or texts you back to set a time.
We’ll call or text this number about your request. By sending it you agree to our terms and privacy policy.
Rather talk now? (703) 997-9757
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceWe answer day or night, and we will tell you honestly when we can get there.
Our own HVAC installersA dedicated heating and cooling team, separate from our plumbers
Price in writing firstYou see every option priced before anything is ordered
How it’s priced
How commercial HVAC work is priced in Chantilly.
No two buildings are alike, so we don’t publish one number for them. More on what we cover on our commercial HVAC and refrigeration page.
Rooftop unit, split system or walk-in repair
Priced in writing at your building, before any work
Rooftop unit replacement, crane lift included
Priced per building, in writing
Spring and fall maintenance for a building
Priced per building, by the units on it
A rooftop unit replacement turns on the tonnage, the curb it sits on, and whether it goes up by crane. We look at all three before you get a number.
Maintenance is priced by the units on the building, spring for cooling and fall for heating, so the visit count matches what you actually run.
What’s different in Chantilly
In Chantilly, the flex buildings are the job.
Chantilly is where our trucks start the day, and a lot of the commercial work here sits within a few miles of the shop: one- and two-story flex buildings along Route 28 and Route 50, with offices in the front, warehouse space behind, and a row of packaged rooftop units on top. Most of those units went up when the buildings did, and many are coming due at about the same time.
On one multi-tenant flex and office building here, we’ve replaced three rooftop units by crane in the last year: one in October 2025, one in June and one in July. The last one needed a new curb, because the old unit’s footprint didn’t match anything made today. On another unit on the same roof, we replaced a heat exchanger with a hole in it instead of the whole unit, since the rest of it still had years left.
That’s the call we try to make on every Chantilly roof. A cracked or holed heat exchanger on a gas unit can leak carbon monoxide into the space below, so we shut the gas off the day we find one. Whether the fix is a new exchanger or a new unit comes down to the unit’s age, its refrigerant and what parts still exist for it, and you get both prices in writing so the landlord or owner can choose.
Not every Chantilly job is on a roof. We’ve serviced a church’s rooftop Trane and its split condenser, and replaced two 19-year-old split heat pumps for a medical aesthetics clinic, sized to the treatment rooms they serve. Offices and clinics in the newer parks off Route 50 tend to run split systems like these, with the air handler above the ceiling and the condenser on a pad out back.
The system we put in first
Built to take a beating. Put in by our crew.
Heat lamps, snow and rain on one outdoor unit: that’s Trane’s own film. We’re a Trane Comfort Specialist, on Trane’s own dealer locator, and when you pick a Trane, our crew puts it in.
Films: Trane’s own.
The signs
When a business in Chantilly needs the HVAC tech.
The rooftop unit trips or blows warm
A rooftop unit that short-cycles, trips its breaker or blows warm on a hot afternoon usually has a failing compressor, a bad capacitor or a coil choked with dirt. Caught early it’s a repair, not a crane day.
The walk-in won’t hold temperature
Virginia’s food code wants cold food held at 41°F or below. A walk-in drifting above that, frost on the evaporator or fans that stopped spinning means a call now, before the inventory goes.
Need commercial HVAC and refrigeration in Chantilly?
A person answers day and night. See this month’s deals before you call.
Choosing who services it
How to pick who services a building in Chantilly.
Questions to ask anybody who bids on your building’s HVAC, us included.
Will they price a repair and a replacement side by side?
On a Chantilly roof with units of different ages, the right answer is often a repair on one and a replacement on another. Ask for both numbers on each unit.
Do they put the price in writing before the work?
On a commercial job the number should be on paper before anyone touches the unit, with the parts, labor and any crane spelled out. A time-and-materials surprise is the thing to avoid.
Can they cover both the rooftop units and the walk-in?
One company for the comfort cooling, the heat and the refrigeration means one call when something stops. Ask whether the same crew handles all three.
Two of our crew going over a work order before the day's calls.
From our Google reviews
What our customers say.
5.0 stars across 1,130 reviews. Read them on our reviews page.
The technicians from SwiftPro were on time, and provided efficient pre-season servicing and inspection of our 2 commercial HVAC units. They even located our supply of air filters and changed them out.
- 5.0stars across 1,130 reviewsHow we count them
- ABBB Accredited, A ratingCheck it on bbb.org
- 2026Voted a Nextdoor Neighborhood Faves winner two years running: 2026 in 30 Northern Virginia neighborhoods, 2025 in Emerald Chase (Herndon) and Hunters Run (Chantilly)See it on Nextdoor
- #1BusinessRate Best of 2026: the top-ranked heating contractor in Fairfax, VirginiaSee our BusinessRate score
- Class AVirginia contractor, license #2705192276Look it up with DPOR
Questions
Commercial HVAC questions from Chantilly.
Do you replace rooftop units by crane in Chantilly?
Yes. We’ve set three rooftop units on one Chantilly building by crane in the last year, including one on a new curb. The crane is in the written price.
Can you service a whole Chantilly building on one plan?
Yes. Maintenance is priced by the units on the building, a cooling visit in spring and a heating visit in fall, so one call covers every unit on the roof.
How much does commercial HVAC work cost in Chantilly?
It’s priced per building, in writing, before any work. A repair is priced once we’ve found the fault; a rooftop unit replacement once we’ve seen the tonnage, the curb and the crane access.
Do you do emergency commercial HVAC in Chantilly?
Yes, 24/7 emergency service for rooftop units, split systems and walk-ins. Call (703) 997-9757 and tell us what’s down.
Ready when you are
Get your building’s HVAC sorted.
Call, or send the form at the top. We come out, find the fault or measure the job, and you get the price in writing before any work.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
SwiftPro Plumber & Water Heaters
4200 Lafayette Center Dr, Suite N, Chantilly, VA 20151
Virginia Class A contractor license #2705192276
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Chantilly and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,130 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.