24/7 Emergency Service Available

Heating Services

Top-Rated Northern Virginia Heating Company

Providing 24-Hour Emergency 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 Whether you need top-class repair, dependable installation services, or you’re looking to replace an outdated system, our team can help with: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

If you’ve noticed any of the above symptoms with your furnace or heat pump, take advantage of our 24-hour heating services in Northern VA and call us today at 703-493-1200!

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)

24-Hour Emergency Heating Services in Northern VA

Major repairs and replacements can be costly, complicated, and, at times frustrating. That’s why you need to make the right choice when it comes to a local, professional HVAC company. At HVAC Unlimited, our technicians are trained in all of the latest technology and techniques. We provide honest appraisals and search for the least expensive methods to fix any heating problems you may be experiencing. If your furnace or heat pump has completely failed, we’ll provide priority service to you and your family so your home can get back to normal as soon as possible.

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 605 customer reviews

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!


Map of Arlington, VA

Great job as usual




Very happy with Jermaine. Friendly and competent, does a great job.


Map of Alexandria, VA

Outstanding Customer Service!!




Very professional and thorough


Map of Arlington, VA

Great service




I called HVAC Unlimited to schedule a maintenance service agreement for my system. Was able to get an appointment in two weeks and was very happy with the service. Jermaine was great, professional, police and knowledgable. Very happy with the service.


Map of Lorton, VA

Excellent service!




Jermaine was a wonderful technician. He was very thorough and attentive. I could not be happier with the treatment I receive from HVAC Unlimited.


Map of Lorton, VA

Great Service




I highly recommend HVAC Unlimited for your patronage. The service team is thorough, attentive and on time. I put complete faith in the work that they do.


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
Erwin V.

Erwin V.

Water leaking and cleaned coil

Near Chesterbrook Vale Ct, McLean, VA 22101
Jermaine A.

Jermaine A.

Cooling Inspection

Near 15th St N, Arlington, VA 22201
Jermaine A.

Jermaine A.

Air Ducts Condensing

Near Clarendon Blvd, Arlington, VA 22201
Jermaine A.

Jermaine A.

No AC

Near Byers Dr, Alexandria, VA 22309
Jermaine A.

Jermaine A.

Cooling Inspection

Near Towne Manor Ct, Alexandria, VA 22309
Robert C.

Robert C.

Found breaker tripping from dirty condenser coil. Cleaned coil and checked system

Near Meadowcreek Ln, Lorton, VA 22079
Jermaine A.

Jermaine A.

NO AC

Near N Greenbrier St, Arlington, VA 22205
William C.

William C.

Install new Carrier 5 Ton A/C and Coil, also tested system operation to ensure proper cooling.

Near W View Terrace, Alexandria, VA 22301
Jermaine A.

Jermaine A.

Cooling Inspection

Near Fascination Ct, Lorton, VA 22079
Jermaine A.

Jermaine A.

Cooling Inspection

Near 23rd Rd N, Arlington, VA 22201
Jermaine A.

Jermaine A.

Cooling Inspection

Near Wyndham Cir, Alexandria, VA 22302
Jermaine A.

Jermaine A.

Cooling Inspection

Near 20th Rd N, Arlington, VA 22205
Robert C.

Robert C.

Found blown fuses from dirty outdoor coil. Cleaned coil and replaced fuses for carrier system

Near S Woodstock St, Arlington, VA 22204
Jermaine A.

Jermaine A.

Cooling Inspection

Near Mayhurst Blvd, McLean, VA 22102
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