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Commercial HVAC Services Fairfax, VA

Your employees need a cool, comfortable workplace to stay productive throughout the year, and you need great HVAC systems to keep your office that way. At HVAC Unlimited, we’re known for striving for excellence in everything we do, and that includes our comprehensive commercial heating and cooling services. From HVAC replacement and installation to maintenance and repair, we have all the great services your business needs to maximize productivity and minimize costs.

Commercial HVAC Replacement and Installation

When you need a new commercial heating and cooling system for your business, choose us. Our technicians will help you select the best system for your space. Plus, they are certified and trained to install every unit to the manufacturer’s expectations, which ensures optimal efficiency and lower operating costs for you. We’re proud to offer a broad selection of Carrier heating, cooling and air quality systems to our commercial customers, including:

  • Air conditioners
  • Heat pumps
  • Boilers and furnaces
  • Geothermal heat pumps
  • Air purifiers, ventilators and other indoor air quality systems
  • Packaged products
  • Thermostats and control systems
  • Cooling towers
  • Chillers
  • Water source heat pumps
  • VAV Boxes
  • IT rooms
  • Liebert systems

Because every office’s heating and cooling needs are unique, we start every installation project to assess those needs. Our expert technicians will work with you to find the right climate control solution for your business, then work diligently to install it up to the manufacturer’s specifications.

Commercial HVAC Maintenance and Repair

Any successful business depends on efficient operations, and we’re here to help you run your company more efficiently with improved heating and cooling. We offer affordable annual service agreements to check on your essential commercial heating and cooling systems and clear up any emerging issues. Moreover, we’ll make the small calibration adjustments needed to minimize energy usage without sacrificing cooling power. In short, annual service from HVAC Unlimited will save you money now on your utility bills and even more later on repairs and replacement.

Of course, even well-maintained systems occasionally have issues, and we know your business can’t afford to wait. That’s why we offer 24-hour emergency repair services; whenever there’s a problem, our expert technicians will be there quickly. We’re fully qualified to repair all major makes and models of HVAC systems, and we complete most repair jobs in a single visit.

Our Credentials

At HVAC Unlimited, we know our colleagues in the business community can only afford to do business with companies they trust. We are a class A licensed, bonded and insured corporation, and we hold a Mechanical Master License in the Commonwealth of Virginia. Our founder and Vice President, John and Jack Cunningham, have a combined 60 years’ experience at every level in the HVAC industry. We bring our vast expertise and commitment to excellent service to every installation, service and repair job, and we’re proud to provide the top-quality service that our commercial customers have come to trust.

HVAC Unlimited Service Areas

We serve areas throughout Northern Virginia, including Aldie, Alexandria, Annandale, Arlington, Ashburn, Bailey’s, Brambleton, Bristow, Burke, Centreville, Chantilly, Clifton, Fairfax, Fairfax Station, Falls Church, Fort Belvoir, Franconia, Gainesville, Great Falls, Haymarket, Herndon, Leesburg, Lorton, Manassas, Mclean, Mount Vernon, Oak Hill, Oakton, Purcellville, Reston, South Riding, Springfield, Stafford, Sterling, Tysons Corner, Vienna, West Springfield, and Woodbridge.

Contact us online now or give us a call us at 703-493-1200 to schedule a service! 

Local Reviews
for Northern Virginia

Rated 5.0 out of 5 stars based on 554 customer reviews

Map of McLean, VA

Perfect!




I really recommend HVAC, great job!


Map of Alexandria, VA

Punctual and Efficient




Jermaine completed the inspection and maintenance of our HVAC units efficiently and thoroughly. Very professional.


Map of Alexandria, VA

Good, fast service!




Friendly & helpful service.


Map of Lorton, VA

Quick response with great service!




Jermaine arrived shortly after our call. He was polite and exhibited a positive disposition. His mannerism is great and we'd prefer his service for our next call.


Map of Arlington, VA

Very reliable service




Easy to schedule an appointment; On Time, Efficient, Friendly, Neat and Professional. Need I say more.


Map of Lorton, VA

Informative





Map of Fairfax, VA

Exemplary Technician




Jeremy was completely thorough when servicing my unit that had stop heating. He explained every step and it's cost as he went along. I have used several service companies and never been this pleased. I will definitely use HVAC for every call in the future!


Map of Alexandria, VA

Great service




Very efficient


Map of Falls Church, VA

Amazing service




Jermaine was awesome! He arrived when he said he would, and kept troubleshooting until the issue was solved! Can’t thank him enough!


Map of Alexandria, VA

Great service; fantastic tech




Jermaine was prompt, professional, courteous and extremely knowledgeable. Best HVAC service we've had in VA.


Jeremy G.

Jeremy G.

Heating inspection

Near Halstead II Ln, Fairfax, VA 22031
Jeremy G.

Jeremy G.

Heating inspection

Near Prosperity Ave, Fairfax, VA 22031
Erwin V.

Erwin V.

Replacing pressure switches high efficiency gas furnace.

Near McConvey Pl, Falls Church, VA 22043
Jermaine A.

Jermaine A.

No Hot Water

Near Divine St, McLean, VA 22101
Jermaine A.

Jermaine A.

Replace Warranty Blower Motor

Near Osprey Point Ln, Alexandria, VA 22315
Jermaine A.

Jermaine A.

Heat Inspection

Near VA-648, Alexandria, VA 22304
Jermaine A.

Jermaine A.

No Heat

Near Hickory St, Alexandria, VA 22305
Jermaine A.

Jermaine A.

No Heat

Near Hooes Rd, Lorton, VA 22079
William C.

William C.

Install new airhandler with 8kw heater pack and drain pan with float switch.

Near Lorton Market St, Lorton, VA 22079
Andre M.

Andre M.

No heat , quoted for repair and replacement

Near Aspenpark Rd, Lorton, VA 22079
Jermaine A.

Jermaine A.

Heat Inspection

Near 15th St N, Arlington, VA 22201
Jeremy G.

Jeremy G.

No heat plus repairs

Near Main Street, Fairfax, VA 22030
Jermaine A.

Jermaine A.

Replace Humidistat

Near Jamieson Ave, Alexandria, VA 22314
Jermaine A.

Jermaine A.

Replace Humidistat

Near Jamieson Ave, Alexandria, VA 22314
Jermaine A.

Jermaine A.

No Heat

Near Jamieson Ave, Alexandria, VA 22314
Jermaine A.

Jermaine A.

Heat Inspection

Near Minda Ct, Alexandria, VA 22304
Jermaine A.

Jermaine A.

Smell Coming from Gas Boiler

Near Memorial St, Alexandria, VA 22306
Jermaine A.

Jermaine A.

No Heat

Near N Hampton Dr, Alexandria, VA 22311
Jermaine A.

Jermaine A.

No Heat

Near Pinewood St, Falls Church, VA 22046
Jermaine A.

Jermaine A.

No Heat

Near N Pitt St, Alexandria, VA 22314
Jermaine A.

Jermaine A.

John Hawkins

Near N Pitt St, Alexandria, VA 22314
Jermaine A.

Jermaine A.

No Heat

Near Bush Hill Dr, Alexandria, VA 22310
Jermaine A.

Jermaine A.

No Heat

Near Taney Ave, Alexandria, VA 22304
Jermaine A.

Jermaine A.

Heat Inspection

Near Timber Meadow Dr, Fairfax, VA 22030
Jermaine A.

Jermaine A.

Heating Inspection

Near Spring Hill Farm Dr, McLean, VA 22102
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