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Air Conditioning Repair in Northern Virginia

Need an air conditioning repair in Northern VA? Don’t wait! Sitting in a hot, humid, and musty home is enough to drive anyone crazy. No one wants to deal with having a weak or unresponsive air conditioning unit once the hot summer months roll around, and thanks to the experts at HVAC Unlimited, you don’t have to! No matter the cause or circumstance, we are primed and prepared to handle anything unfortunate that may befall your air conditioning this year.

Think you need an air conditioning repair in Fairfax, Arlington, or Alexandria and surrounding Northern Virginia cities? Contact us now, before a little problem turns into big one!

We offer:

Air Conditioner Repair Services in Fairfax, VA

When problems arise with your air conditioning system, be it central, ductless, heat pump, or even a hybrid, you need the help of top-class professionals to restore your home comfort. Our summer seasons are unpredictable, and often relentless, and we never want you to be left hot and uncomfortable during a Northern Virginia heat wave!

The air conditioner repair professionals at HVAC Unlimited combine years of experience, top-class training, and the best tools in the business to provide you with repair that gets the job done, and done right the first time. We place your needs and comfort above all else, and our service aims to bring you fast, accurate repair service and time you need it.

Signs You Need Air Conditioning Repairs:

It’s not always easy to tell if you need AC repairs. Generally, you should call a cooling contractor if your air conditioner exhibits any of the following signs:

  • Your unit is blowing warm or only slightly cool air
  • Irregular noise, including clunking, gurgles or unusual clicks
  • Strange odors accompanied by poor air flow
  • Excessive leaking or dripping along ducts or from unit

Our AC professionals are proud to bring the very best in air conditioning repair services, available at any hour of any day to work on units of any model or age. At HVAC Unlimited, your happiness is our priority!

Central Air Conditioning Repairs

There are various signs that your central AC unit may need repairs, many of which we listed above, but let’s go into a little more detail so you can be sure in identifying potential causes that call for repair.

  • Leakage: When condensation forms inside of your unit (which is a part of normal function), a drainage system directs the excess moisture. When this system is in jeopardy, pools of water can form at the bottom of and around your unit. These pools, as well as freezing along the sides of the unit or on its internal parts, are often sure signs your central unit is in need of repair.
  • Strange odors: Odd smells that persist while your unit is running can be a sign that your coils are dirty, or that the filter may be clogged. If you’re just turning the unit on for the first time of the season, some of this odd musty smell is rather normal, but if it persists for longer than a day, it’s a good idea to call in the pros.
  • Warm or slightly cool air: This is often a sign that the coolant in your system is in need of a recharge, and is definitely a cue to call in the cavalry.
  • Irregular noise: Central air conditioning systems make noise, for sure, but it often fades into the back of our minds within a few days of it running. If your unit is making enough noise that it calls your attention, its best to get it checked right away to avoid potential disasters.

Ductless Air Conditioning Repair         

Ductless, or “Mini-Split” AC systems come with their own unique challenges and issues, but the folks at HVAC Unlimited are more than equipped to handle any issue that may arise! These units share many of the same signs for repair as central air, but there a couple to keep your eye (and ear) out for.

  • Overheating: A running unit is likely slightly warm to the touch. This is normal, but if it begins to give off excessive heat (like a hot hair-dryer) and smells slightly of ozone, it’s a good idea to contact a trusted professional.
  • Leaking refrigerant: Just as a central unit can improperly drain condensation, so can a ductless unit. Both require a check. But, your ductless unit can potentially leak coolant, which is a sign of a much larger issue and requires immediate servicing.
  • System freezing or ice: Many problems can lead to a sudden formation of ice or frost on your ductless system, including air flow complications, refrigerant issues, and even a system that just isn’t cleaned often enough! No matter the cause, you can count on the HVAC Unlimited repair team to root out the issue and get it fixed right away.
  • Sudden rises in energy costs: Ductless cooling systems boast some really exceptional energy-efficiency, as well as low cooling costs—it’s one of the big reasons why they’re so popular! So when your bill suddenly shoots up by even tens of dollars, you can bet there’s an issue. Call on our team to restore the efficiency of your system!

Heat Pump Repair

Our experts have been handling heat pump systems for decades. We’ve seen, and fixed, it all! Heat pump systems, like the other system types, can encounter some fairly unique problems. If you enjoy the benefits of a heat pump system in your Virginia home, be wary of the following:

  • Mode jamming. Since a heat pump system can serve as both a cooling and heating system, it features mode swapping. Occasionally, the system can get stuck in one or the other–you’ll often notice this just as the seasons turn, when you’re trying to go from “heat” to “cool.” The problem lies with your reversing valve, but the fix is a fairly simple one for our professional repair team.
  • Puddling water. This can be accompanied by ice of frost, much in the same way as a ductless system. Undue condensation typically comes from a condensate system malfunction, but can also arise when your coils or overall system hasn’t been cleaned or serviced frequently enough. Especially with heat pumps, semi-annual HVAC maintenance is critical!

24-Hour Emergency Cooling Repair Services

Available for Contract Customers

No problem is ever going to wait politely for a convenient time to arise (if there is such thing as a convenient time for an AC breakdown). You need access to quality, knowledgeable service from top-class HVAC professionals. In fact, you deserve it! And that’s why our emergency repair team is available any time, any day to help restore comfort to our loyal customers.

As long as you’re a current customer, when you contact HVAC Unlimited for emergency AC repair service, we’ll prioritize your call, sending a fully-equipped and expertly trained repair team to your home right away.

*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!*

HVAC Unlimited: Northern Virginia’s Favorite Air Conditioning Repair Company

Regardless of where or when, if you’re experiencing any of these issues, contact us at HVAC Unlimited and let us put our expertise at your disposal. Our expertly trained professionals are standing by, ready for you!

Local Reviews
for Northern Virginia

Rated 5.0 out of 5 stars based on 622 customer reviews

Map of Fairfax, VA

Outstanding Professional Service




Robert Campbell, from HVAC unlimited, has been servicing my house hvac systems and our family systems for many years. Robert's hvac services are always very professional and thorough. When any repairs are needed, we feel comfortable about his honest suggestions and prices. We have recommended HVAC UNLIMITED to our family and friends and Robert Campbell is an asset to his company!


Map of McLean, VA

Informative Technician





Map of McLean, VA

Great service




On time, polite and thorough inspection


Map of Falls Church, VA

Great service




Jermaine came to service our HVAC systems today and was professional and knowledgeable. He took the time to explain things to me, which I appreciated. On top of that, he was a friendly and cheerful person. Good job!


Map of Lorton, VA

Great service delivered ahead of schedule




Fast service. Convenient and flexible.


Map of Alexandria, VA

Great service





Map of Fairfax, VA

Great Service when all the other technicians I called seemed lost!




Jermaine was super knowledgeable of my building and was able to identify and repair the problem with my air conditioner in a very quick timeframe!


Map of Arlington, VA

Wonderful experience.




Robert was very thorough and patient. He was respectful and represented HVAC Unlimited very professionally. I enjoyed his supportive, helpful nature.


Map of Lorton, VA

Great Service




On time. Knowledgeable. Professional.


Map of Arlington, VA

Extremely Knowledgeable, Very Service




Jermaine was very quick to get us a solution to what was wrong with our system and immediately fix the problem on site. He was very knowledgable and had great customer service!


Erwin V.

Erwin V.

Heating inspection and repairs

Near Leesburg Pike, Falls Church, VA 22041
William C.

William C.

Performed 2 contracted heating inspections on hydronic heat pumps.

Near Prosperity Ave, Fairfax, VA 22031
William C.

William C.

Heating inspection on Hydronic Airhandler.

Near Spring Gate Dr, McLean, VA 22102
Erwin V.

Erwin V.

Heating inspection.

Near McLean, VA 22102
Robert C.

Robert C.

Performed heating inspection on Carrier gas furnace system under contract

Near Covington St, Fairfax, VA 22031
Erwin V.

Erwin V.

Service repairs,no heating.

Near Aspenpark Rd, Lorton, VA 22079
Jermaine A.

Jermaine A.

Heat Inspection

Near Mayhurst Blvd, McLean, VA 22102
Jeremy G.

Jeremy G.

Heating inspection

Near Catbird Cir, Lorton, VA 22079
Jeremy G.

Jeremy G.

Heating inspection

Near Catbird Cir, Lorton, VA 22079
Jermaine A.

Jermaine A.

Heating Inspection

Near Falstaff Rd, McLean, VA 22102
Jermaine A.

Jermaine A.

Heating Inspection

Near Grove Ave, Falls Church, VA 22046
Jeremy G.

Jeremy G.

No ac plus repairs

Near Catskill Rd, Lorton, VA 22079
Jermaine A.

Jermaine A.

Heating Inspection

Near Towne Manor Ct, Alexandria, VA 22309
Jermaine A.

Jermaine A.

Chemically Clean Heat Pump Coil

Near N French St, Alexandria, VA 22304
Jermaine A.

Jermaine A.

No AC

Near Merrilee Dr, Fairfax, VA 22031
Jermaine A.

Jermaine A.

Erik M

Near Merrilee Dr, Fairfax, VA 22031
Jermaine A.

Jermaine A.

Heating Inspection

Near Island Creek Ct, Alexandria, VA 22315
Robert C.

Robert C.

Performed heating inspection on boiler system

Near 24th Rd N, Arlington, VA 22205
Andre M.

Andre M.

Performed cooling inspection on trane ac system

Near Anita Dr, Lorton, VA 22079
Josue R.

Josue R.

Responded to a no A/C call, when arrived found auxiliary drain pan full of water and float switch open. Vacuumed out drain pan and performed run checks, found system low on refrigerant Charged unit to manufacturer’s specs. Added 2lbs of R22. Equipment working properly at this time

Near Merrilee Dr, Fairfax, VA 22031
Jermaine A.

Jermaine A.

No ac

Near N Hampton Dr, Alexandria, VA 22302
Jermaine A.

Jermaine A.

No AC

Near 3rd St S, Arlington, VA 22204
Jermaine A.

Jermaine A.

Sweaty Air Ducts

Near Governors Pond Cir, Alexandria, VA 22310
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
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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 our customers. We provide emergency service up to 8pm for all customers and 24/7 for contract customers. For quick, efficient emergency services, please call (703) 493-1200 immediately.