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 Whether you need top-class repair, dependable installation services, or you’re looking to replace an outdated system, our team can help with: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 578 customer reviews

Map of Lorton, VA

Great service!





Map of McLean, VA

HVAC Service Call




Jermaine had a very pleasant demeanor and provided me with requested advice on how a problem unrelated to his service call might be solved. The service call appeared to be handled well. I have not rated the quality of Jermaine's work only because I do not consider myself sufficiently knowledgeable about the what's required in serving a wine cellar air conditioner to make a judgement on this point.


Map of Alexandria, VA

Great Professional Service




Germaine called ahead. He arrived in the appointed time slot. He was very knowledgeable and efficient. He protected the floors and surrounding areas. He did a great job.


Map of Alexandria, VA

Great service by Jermaine, prompt and provides details of all that is done.




Refer to above, Jermaine is very informative.


Map of Arlington, VA

HVAC is a good choice for Customer Service!




HVAC is a professional reliable company with personable technicians. I recommend them.


Map of Arlington, VA

Prompt arrival, extremely helpful - went the extra mile!




Rony arrived promptly and worked diligently. He was helpful in answering the questions I had and was very informative. Also, he improved the set-up of my HVAC unit and helped the closet door close better. 5 stars!!


Map of Alexandria, VA

Great Service !!




Technician was very friendly and knowledgeable.


Map of Alexandria, VA

Great service.




Jermaine was very professional and helpful, answering all of my questions.


Map of Alexandria, VA

A neat freak with a dirty AC unit!




I have a Sanyo unit that needed cleaning and it is located in a cream colored room with cream carpet and furniture. Jeremy, the HVAC tech, was on time, courteous and neat. I am very happy with the service and will continue to use HVAC for all of my AC needs.


Map of Alexandria, VA

efficient and very informative sevice





Jermaine A.

Jermaine A.

Cooling Inspection

Near Furey Rd, Lorton, VA 22079
Rony T.

Rony T.

Ac not cooling and annual maintenance

Near Agnes St, Lorton, VA 22079
Rony T.

Rony T.

Air conditioning not cooling and annual maintenance

Near Almeda Ct, Lorton, VA 22079
Jermaine A.

Jermaine A.

Cooling Inspection

Near Mt Vernon Trail, Alexandria, VA 22314
Jermaine A.

Jermaine A.

Cooling Inspection

Near Mt Vernon Trail, Alexandria, VA 22314
Jermaine A.

Jermaine A.

Cooling Inspection

Near Donovan Dr, Alexandria, VA 22304
Erwin V.

Erwin V.

Cooling inspection

Near Washington Blvd, Arlington, VA 22201
Rony T.

Rony T.

Ac annual maintenance

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

Jermaine A.

Cooling Inspection

Near Clayton Ln, Alexandria, VA 22304
Erwin V.

Erwin V.

Cleaning evaporator A coil air handler and replaced insulation rooftop unit.

Near VA-237, Arlington, VA 22201
Rony T.

Rony T.

Ac yearly maintenance

Near Minda Ct, Alexandria, VA 22304
Jermaine A.

Jermaine A.

Cooling Inspection

Near Mt Vernon Trail, Alexandria, VA 22314
Jermaine A.

Jermaine A.

Cooling Inspection

Near Mt Vernon Trail, Alexandria, VA 22314
Jermaine A.

Jermaine A.

Heat Pump Repairs

Near VA-236, Alexandria, VA 22314
Jeremy G.

Jeremy G.

Cleaning up a ductless mini split and testing operation

Near Wolfe St, Alexandria, VA 22314
Jermaine A.

Jermaine A.

Installed EZ Trap

Near Courthouse Square, Alexandria, VA 22314
Jermaine A.

Jermaine A.

Cooling Inspection for Wine Cellar

Near Brook Valley Ln, McLean, VA 22102
Jermaine A.

Jermaine A.

Cooling Inspection

Near Brenman Park Dr, Alexandria, VA 22304
Jermaine A.

Jermaine A.

Cooling Inspection

Near Westgrove Blvd, Alexandria, VA 22307
Jermaine A.

Jermaine A.

Noise heard from Furnace

Near Furey Rd, Lorton, VA 22079
Jermaine A.

Jermaine A.

AC INSPECTION

Near Merrilee Dr, Fairfax, VA 22031
Jermaine A.

Jermaine A.

Cooling Inspection

Near N Randolph St, Arlington, VA 22201
Rony T.

Rony T.

Air conditioning yearly maintenance

Near Larpin Ln, Alexandria, VA 22310
Jermaine A.

Jermaine A.

Cooling Inspection

Near Lee Hwy, Arlington, VA 22201
Jermaine A.

Jermaine A.

AC Inspection

Near N Pitt St, Alexandria, VA 22314
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