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Heating Services

Top-Rated Northern Virginia Heating Company

Providing Heating Services throughout Northern Virginia, Including Lorton, McLean, Alexandria, Arlington, Fairfax & More!

Is your furnace making clanking noises? Does your home have an usual draft or feel colder than normal when your heat is on? If so, it’s most likely time for you to schedule a heating service with the expert technicians at HVAC Unlimited! We provide reliable, efficient, and quality HVAC services to homeowners throughout Northern Virginia. Our team has been offering 24-hour heating services and industry-leading quality for decades.

Schedule a heating service from the best Northern Virginia heating company or call us a703-493-1200!

HVAC Services from the Best Heating Company in Lorton

You can count on us to service all major heating system brands in areas like Arlington, Falls Church, Lorton, and Vienna. We provide the following heating services throughout Northern Virginia:

Furnace Services

Gas, electric, and even oil furnace systems are widely used across the entire nation. They’ve been the go-to heating system for homeowners for generations, and our team specializes in furnace services for that reason specifically. No matter your furnace needs, our experts can provide dependable, reliable products and services to meet your every heating need. Call our top-rated Lorton heating company to service your:

  • Gas furnace heating systems
  • Electric furnace heating systems
  • Oil furnace heating systems

We offer the following furnace services:

  • Furnace installation
  • Furnace replacement
  • Furnace maintenance
  • Furnace repair

As a Carrier Factory Authorized Dealer, the experts at HVAC Unlimited can provide not only top-tier service, but the best furnace products and systems in the business. Carrier is an industry-leading manufacturer that we are always proud to bring to our Northern Virginia clients.

Schedule furnace services in Northern Virgnia, including Lorton, by calling our heating company at 703-493-1200 today!

Heat Pump Services

Heat pumps have been rapidly evolving as one of the leading home heating and cooling systems because of their versatility, energy-efficiency, and sheer dependability. Our team can help you to experience all the benefits that a heat pump can bring to your home. Whether you need top-class repair, dependable installation services, or you’re looking to replace an outdated system, our team can help with:

  • Heat pump installation
  • Heat pump replacement
  • Heat pump maintenance
  • Heat pump repair

Schedule a heat pump service by calling our technicians at 703-493-1200 today!

Boiler Services

Boiler systems provide total home comfort, offering superior heating power that is exceedingly even throughout your home. We can help you choose the perfect boiler system for your home, both sizing and installing your new system to optimize efficiency and provide heating that can fight off cold winter storms. We offer:

  • Boiler installation
  • Boiler replacement
  • Boiler maintenance
  • Boiler repair

Schedule boiler service by contacting our HVAC contractors at 703-493-1200 today!

Heating Installation & Replacement

At HVAC Unlimited, we offer many heating services, including heat pump and furnace replacements and installations for homes and businesses in McLean, Lorton, Alexandria, and the surrounding areas. Older heaters usually give some kind of warning when they are in need of a repair or replacement, but can you recognize those signals? Some signs you need a new heating system include:

  • Your heater is coming to the end of its life. The average lifespan of a furnace is 15-20 years. If your unit is older than 15 years, you should consider a furnace replacement.
  • Your energy bills keep rising. If your energy bills have been steadily increasing, but your usage has stayed the same, higher fuel prices might not be the culprit. Furnace efficiency can dramatically decline as the unit ages.
  • You need heating repairs more than once a year. Frequent, costly repairs are a sign of more to come. If you’re facing a repair bill of $500 or more, and the unit is more than 10 years old, consider upgrading to a new unit.
  • Your air quality is decreasing. Dry, stale air and excessive amounts of dust, soot, or rust particles are all signs that your furnace has lost its ability to effectively clean and humidify the air in your home.
  • Your family or home is expanding. If you’re adding on a room or increasing the amount of people living in your home, your furnace may have to work harder than before, raising your energy costs.

Schedule an in-home consultation to discuss your options for heating installation and other heating services with the professionals at HVAC Unlimited today!

Heating Repairs

When it comes to your car, would you ignore odd noises or unusual smells?  You should treat your HVAC system with the same care and precaution because ignoring problems can oftentimes lead to more costly repairs or even the need for a complete replacement.

Commercial and residential heating services require professional repair services, no matter the age, brand, or model. At HVAC Unlimited, we’re experienced in diagnosing and fixing many different challenges, including:

  • Lack of proper maintenance
  • Motor malfunctions
  • Cracked heat exchanger
  • Dirty or misaligned pilot light
  • Dirty or clogged air filters
  • Blower fan issues
  • Broken limit control switch

Top-Rated Heating Company Headquartered in Lorton, Virginia

Lorton is part of Fairfax County in Northern Virginia, and is home to 18,610 residents. That means there are more than 18,000 people who rely on a reputable heating company to provide the heating services they need—and HVAC Unlimited is happy to help. Whatever reason brought you to Lorton—even if it was to be closer to the Five Guy’s headquarters—we’re glad it did! (We’d be lying if we said we don’t love having our Lorton heating company close to the best burgers in the area!) We look forward to providing you and your family the best heating services in Lorton—give us a call today!

See What Our Customers Are Saying

“Rob was awesome. He was quick, thorough and extremely knowledgeable. He offered me the service contract which was a great deal for me. He came out on a Sunday when other companies weren’t available. He was at my house quickly and exactly when he said he would be and efficient and thorough once he started working.”

– Neal (Lorton, Virginia)

“I have used HVAC Unlimited since I bought my home 10 years ago. From installation and service appointments they are always so wonderful and my unit rarely ever needs attention. My most recent appointment with Jeremy this Saturday could not have been better. I will only use HVAC Unlimited!”

– Kate (Arlington, Virginia)

“I have used most of the “highly rated” HVAC companies in Northern VA and this company rocks! Allows you to schedule and they honor your time, excellent technicians, fair pricing without upselling you on contracts.”

– Jeanie (Alexandria, Virginia)

Call us today at 703-493-1200 for reliable heating services throughout the Northern Virginia area!

HVAC Unlimited offers heating services 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 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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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.