Water on the roof means water inside
In an older Annandale strip center, a small condensate leak can soak insulation and a drop ceiling for weeks before anyone sees it. A look at the drain pan and line on each unit is cheap next to a ceiling.
Annandale, Virginia
Commercial HVAC in Annandale.
For commercial HVAC in Annandale, 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 Annandale, SwiftPro is rated 5.0 stars across 1,130 reviews and works under Virginia Class A contractor license 2705192276. We cover commercial HVAC in Annandale: rooftop units on the strip retail along Little River Turnpike and Columbia Pike, custom ductwork, restaurant roofs. 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
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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 Annandale.
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 Annandale
In Annandale, the strip centers and the one-off buildings.
Annandale’s commercial buildings are mostly low and old: strip centers and restaurant rows along Little River Turnpike and Columbia Pike, a few small office buildings, and storefronts that have changed tenants more than once. Many were built before 1980 and sit under a rooftop unit or two that were added, moved or swapped as each tenant came and went. Ductwork under those roofs rarely matches the drawings, if there are any.
That is where our most Annandale-specific job came from. A commercial space here needed ductwork that no catalog part would fit, so we fabricated custom spiral duct and installed it through the building. Spiral is round, tight-seamed and holds up in an open ceiling where the pipe is on show, but it has to be measured on site and built to fit, not ordered off a shelf. If your space has an odd ceiling or an exposed run, ask about that before you accept a rectangular box that fights it.
The other call we know well here is smaller and more common: a rooftop unit that leaks water. On a restaurant roof in Annandale it was a condensate leak, the drain backed up and the water ran where it shouldn’t. A clogged or sagging drain line is a quick fix when someone catches it, and a ceiling stain or a rotted curb when nobody does. If a unit on your roof is dripping at the pan or the line, call early.
Restaurants along these corridors usually carry a kitchen load on top of a dining room load, so the rooftop unit and the make-up air over the hood fight each other if either is off. A tech checks both on one visit. Not sure which of your buildings is on a roof, a split or a loop? We can walk it and tell you.
The signs
When a business in Annandale 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 Annandale?
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 Annandale.
Questions to ask anybody who bids on your building’s HVAC, us included.
Can they build ductwork to fit an odd space?
In Annandale’s older commercial buildings, standard parts often do not fit. Ask whether they fabricate custom duct, spiral included, and whether they measure on site first.
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.
Thank you to Moises and his team for quickly and efficiently responding to my request for pre-season servicing of my commercial HVAC units.
- 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
Where we work
Commercial HVAC and refrigeration in every Northern Virginia town we serve
Next door to Annandale: Springfield, Fairfax, Alexandria, Reston and Herndon.
Fairfax County
Arlington County
Loudoun County
Prince William County
Fauquier County
Stafford County
Every town on one page
Questions
Commercial HVAC questions from Annandale.
Can you fabricate spiral ductwork for a commercial space in Annandale?
Yes. We have built and installed custom spiral ductwork through an Annandale commercial building. It is measured and made to fit the space. See our commercial HVAC and refrigeration page for the rest of the work.
A rooftop unit in my Annandale building is leaking water. Is that urgent?
Treat it as soon. Most are a clogged or sagging condensate line, quick to clear, but the water soaks the ceiling and the curb under it if it keeps running. We have cleared this on a restaurant roof here.
How much does commercial HVAC work cost in Annandale?
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 Annandale?
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 Annandale 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.