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HVAC

HVAC Repair in Northern Virginia

Finding yourself in a situation that requires HVAC repair can be frustrating, and exceptionally uncomfortable. We’ve come to rely on the heating and cooling systems we know so well, and when something goes wrong, we can be at a loss for how to handle it. In these times, don’t stress! Look to the expertise and skill of HVAC Unlimited to handle your HVAC repair needs without so much as a hiccup!

Our HVAC contractors are NATE (North American Technician Excellence) certified, so you know you’re getting the quality and skill you deserve for your HVAC repair. No matter the size or scope of your issue, we’ve seen it all, and can bring all that is needed to exceed expectations and have you back to normalcy right away.

 

What Is “HVAC”?

HVAC is an acronym that stands for “Heating, Ventilation and Cooling”, and entails the maintenance, installation and repair of all machinery that falls under this scope. It includes all heating equipment, air conditioning, hybrids and air quality. When we say “HVAC repair”, we’re referring to the recovery and maintenance of any of these machines that are operating poorly, or not operating at all.

To better understand how your HVAC system operates, take a glance at this handy little chart.

Need HVAC repair in your Fairfax home or business? Contact the certified experts at HVAC Unlimited today to get top-quality repairs at competitive prices!

*While we serve all customers until 8 PM, overnight emergency service (after 8 PM) is available for contract customers only.*

*For emergency services we ask that you please call (703) 493-1200 and not submit an online request. Phone calls allow us to respond quickly to your emergency HVAC and plumbing needs!*

Heating Repair: Oil, Gas and Electrical Furnaces

Heating issues that may require repair can include:

  • Strange sounds
  • Inadequate heating
  • Energy cost spikes
  • Operation Failure
  • Inaccurate thermostat readings

Cooling Repair: Central AC, Ductless Systems

Keep an eye out for any of these signs:

  • Coolant leaks
  • Excessive condensation or pooling water’
  • Hikes in cost of operation
  • Operation failure
  • Warm air
  • Odd sounds

Hybrid Repair: Air-Source, Geothermal, or Water Source Heat Pumps

Hybrid systems share many of the same indications of disrepair as most other HVAC systems, but there are a few unique signs:

  • Mode jams (The pump refuses to switch from “heating to cooling” or vise versa
  • Over-frequent cycling, or kicking on randomly

HVAC Ventilation Repair

What do you know about your ventilation system? Here are a few facts:

  • Ventilation refers to the duct system that circulates the air in your home or business.
  • Air coming into the indoor system is called return air; air going out of the indoor component to the rest of your house is called supply air.
  • Modern building codes sometimes require returns in every room, so this can become more complex for newer buildings.
  • The ventilation aspect of HVAC is extremely important in terms of comfort, energy efficiency, equipment operation and indoor air quality.
  • There can be hundreds of feet of duct in an average-sized house, and it frequently is placed in areas such as the attic or basement where the air is not clean. If your ductwork is not perfectly sealed, you will not only lose heating and air conditioned air to outside areas but also bring dusty or dirty air into the conditioned air in your house. This wastes a lot of energy as well as creating a potentially unhealthy indoor environment.

If you have a problem in your ventilation system, you could be breathing lower quality air, and paying more for conditioned air that’s leaking through the cracks.

Watch out for these common issues:

  • Increased presence of allergens including pet dander, dust, pollen, etc.
  • Moisture-laden (humid) air
  • Dry air
  • Poor heating and cooling circulation
  • Reduced efficiency from an otherwise perfectly fine heating or cooling system

Peerless HVAC Repair in Fairfax and Northern Virginia

Our specialists know how to read your HVAC system like a book. We’ve seen it all, and no issue is too large, or too small for us to locate and remedy in record time. HVAC Unlimited has been providing excellent service to Northern Virginia for years, and we would love nothing more than to extend our expertise to aiding your specific and unique needs. To learn more about our repair services, or for answers to any questions you may have, contact our team today!

Local Reviews
for Northern Virginia

Rated 5.0 out of 5 stars based on 610 customer reviews

Map of Alexandria, VA

Great Service that exceeded my expectations!!




This is by far the best HVAC company I have used. Erwin was professional, knowledgeable and extremely thorough. He did such a great job that I signed up for their maintenance contract to ensure my systems are always operating at their optimum level.


Map of Alexandria, VA

Terrific and Fast Service




Erwin worked diligently on repairing several aspects of our air conditioning system. He was very professional, showing me the damage to our units and explaining how the components work together to efficiently and safely provide AC to our home. I've never had a technician be so thorough and explain what needed to be done in such a comprehensive and easy to understand way. I really appreciated all his hard work and thoroughness especially on a very hot day!


Map of Arlington, VA

Great service, knowledgable and professional technician.




The technician was responsive on a Sunday afternoon. He was very professional and did a great job. Couldn't have asked for better service and experience.


Map of McLean, VA

Great company, Great Service!




Came out the same day to fix broken A/C. Technician called ahead and came to the house at the promised time. Great price and the technician was awesome! Explained exactly what he was doing, showed me the broken part and fixed it in no time.


Map of Lorton, VA

HVAC Service Call




I highly recommend this company for your HVAC needs! What a tremendous effort by the HVAC Unlimited Team supporting our requirements. I called several other companies who either did not return my call or had excessive emergency rates. The HVAC Unlimited Team was timely, professional, and provided exceptional customer service. The HVAC representative (Jeremy G.) was a total pro -- he kept me informed on his arrival time, provided detailed analysis of the diagnosis, and walked me through the process of bringing my HVAC back to a fully mission capable state. Further, Jeremy was very patient and answered the plethora of questions I had regarding my system and provided information on routine service opportunities that the company can provide. If you are in need of HVAC support, don't hesitate any further, call this team and you will be in good hands.


Map of Arlington, VA

Great Service





Map of Lorton, VA

Good service





Map of Arlington, VA

Quick and Professional Service




Jermaine was great both on the phone and in person. He listened patiently to my story, discussed options with me, and then helped arrange next-steps. Couldn't be happier with his service.


Map of Lorton, VA

Good service




Technician Jermaine Allen was patient in answering questions & explains the tests that he is performing.


Map of Arlington, VA

Excellent service




Jermaine Allen replied to a late call on a Saturday afternoon. He came promptly, did a fine job, and was personable and friendly. He fixed my problem and got my AC running on a hot Memorial Day weekend. I appreciate it!


Rony T.

Rony T.

No air conditioning found clogged drain line.

Near Midtown Ave, Alexandria, VA 22303
Erwin V.

Erwin V.

Water leaking.

Near Elba Rd, Alexandria, VA 22306
Erwin V.

Erwin V.

No a/c

Near Prince St, Alexandria, VA 22314
Erwin V.

Erwin V.

No A/C

Near N Randolph St, Arlington, VA 22201
Erwin V.

Erwin V.

Repairs air conditioning system

Near Cannon Ln, Alexandria, VA 22303
Jermaine A.

Jermaine A.

No AC

Near Jamieson Ave, Alexandria, VA 22314
Jermaine A.

Jermaine A.

No ac

Near N Woodstock St, Arlington, VA 22207
Jermaine A.

Jermaine A.

No Ac

Near 20th St N, Arlington, VA 22207
Jermaine A.

Jermaine A.

No AC

Near Aristotle Dr, Fairfax, VA 22030
Jeremy G.

Jeremy G.

No ac plus repairs

Near Ingleside Ave, McLean, VA 22101
Erwin V.

Erwin V.

Air conditioning repairs

Near N Van Dorn St, Alexandria, VA 22304
Jermaine A.

Jermaine A.

AC Repair

Near N Hampton Dr, Alexandria, VA 22302
Jeremy G.

Jeremy G.

Clearing clogged drain

Near Middle Ruddings Dr, Lorton, VA 22079
Josue R.

Josue R.

Responded to a no A/C call, when arrived found thermostat miswired not energizing the reversing valve, corrected wiring and performed start up and run checks to assure proper sequence of operations.

Near Dead Run Dr, McLean, VA 22101
Robert C.

Robert C.

Performed cooling inspection and cleaned blower assembly on Bryant system

Near Randolph St, Fairfax, VA 22030
Jermaine A.

Jermaine A.

No AC

Near Heatherway Ct, Alexandria, VA 22315
Jermaine A.

Jermaine A.

No AC

Near Heatherway Ct, Alexandria, VA 22315
Robert C.

Robert C.

Replaced failed capacitor on Carrier heat pump system

Near Flintridge Ct, Fairfax, VA 22032
Erwin V.

Erwin V.

Fixing water leaking and other repairs

Near Byrd Dr, Fairfax, VA 22030
Jermaine A.

Jermaine A.

Cooling Inspection

Near E Walnut St, Alexandria, VA 22301
Jermaine A.

Jermaine A.

Cooling Inspection

Near Springfield Dr, Lorton, VA 22079
Jermaine A.

Jermaine A.

Cooling Inspection

Near Sperrin Cir, Fairfax, VA 22030
Erwin V.

Erwin V.

Repairs air conditioning.no a/c call

Near Furey Rd, Lorton, VA 22079
Jermaine A.

Jermaine A.

Cooling Inspection

Near Custis Memorial Pkwy, Arlington, VA 22201
Jermaine A.

Jermaine A.

Cooling Inspection

Near Custis Memorial Pkwy, Arlington, VA 22201
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  • For emergency service, please call our office at 703-493-1200.

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EMERGENCY SERVICE

We have staff on call 24/7 to provide assistance to contract customers during emergency situations. For quick, efficient emergency services, please call (703) 493-1200 immediately.