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Furnace Services

Northern Virginia Furnace Services

Providing Top-Rated Furnace Installation, Replacement & Repair in Lorton, McLean, Fairfax, Alexandria, Arlington & More!

Putting up with furnace issues shouldn’t be part of your daily routine in winter. If you’ve been having problems with your furnace or know it’s time to get a furnace replacement, look no further than HVAC Unlimited. You can count on us for a full diagnostic and consultation, as well as 24 hour emergency installation.

We offer:

Northern VA Furnace Installation

The discovery of fire is one of mankind’s great achievements, one you can surely appreciate on a cold winter night. Extreme cold is normal for northern Virginia winters. If you use natural gas or propane, then an open flame using gas as fuel provides your heating. Any time there are open flames present inside a house, extreme caution needs to be used. Leaks can be catastrophic and real care must be taken by your furnace contractor for heating to make sure all potential areas for leaks are thoroughly sealed and tested. The presence of carbon monoxide is another area of concern. As you can see, an expertly installed and maintained heating system is important for your comfort as well as your safety.

Your options for furnaces include gas furnaces, electric furnaces, and oil furnaces from the trusted brand Carrier:

  • Gas furnace: Gas furnaces are more efficient than oil furnaces, but are usually slightly more of an upfront investment. The fuel typically costs less, but you need to be in an area that has fuel readily available. While gas furnaces are quieter and cleaner, they provide less heat per BTU.
  • Oil furnace: Oil furnaces typically cost less that gas furnaces, but their fuel is usually a little pricier. You get higher BTUs—which means more heat—than gas, but maintenance is more extensive. More residents in the Virginia areas use gas furnaces, but if you have an older house you might have inherited an oil unit.
  • Electric furnace: Electric furnaces use electricity to heat your home, which means no fuel costs and open flames in your home. They are typically more expensive that fueled furnaces, but are more durable, last longer, and don’t emit carbon dioxide. They are also quicker to be installed.

Northern VA Furnace Replacement

Home heating costs can be volatile, rising and falling with the price of fuel. This makes energy efficiency extremely important. We are aware of this and can help you by providing upgrades that will squeeze more heating out of each drop of fuel. Replacing older heating equipment with modern, energy-efficient models can make a remarkable difference in utility costs and provide you with years of savings.

Some signs you need a furnace replacement include:

  • A furnace that’s more than 15 years old
  • Rising gas or electric bills
  • Increasing amounts of furnace repairs
  • Yellow burner flame
  • Clanks and other strange noises
  • Reduction in air quality
  • Musty or gaseous smells in your home
  • Uneven heating in your home

If you’ve noticed any of these signs, it might be time for a furnace replacement in Lorton or the surrounding Northern Virginia areas!

You may be interested in: Signs it’s Time for a Furnace Upgrade

Top-Rated Furnace Service 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)

Furnace Installation and Furnace Services in Northern Virginia

There are other elements to consider besides the equipment, and we will be happy to talk to you about other aspects of your home or business that impact the cost of heating. There is no need to be left out in the cold. Schedule your heating repair, service or installation appointment today and we will provide you with all the information you need.

What is your heating footprint?

We Provide Furnace Services to the following areas in Northern Virginia:

Aldie, Alexandria, Annandale, Arlington, Ashburn, Bailey’s Crossroads, 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, 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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