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About Us

HVAC Unlimited in Northern Virginia

Welcome to HVAC Unlimited! Since 2006 our team has been proud to offer home and business heating, cooling, and plumbing services in Northern Virginia. We are family owned and operated—a more important fact than might first appear, because it means we offer a personalized touch to each and every service. There’s no “cookie cutter” solution from the HVAC Unlimited team. Your needs are unique, and we tailor our services to accommodate them!

Whether you’re looking for complete design and installation or timely repairs, our experts are the ones that can offer you peerless results, prompt solutions, and at a price you can be comfortable with, too. When you need specialists in Northern Virginia, there’s only one name you need to know: HVAC Unlimited.

A Brief Look at Our History

Though we’ve been HVAC Unlimited since 2006, our roots go a whole lot deeper. Owner John Cunningham has been in the HVAC and home service industry for going on 30 years. And he learned the basis of everything he knows from his father—a man with a combined 45 years in home and business heating and cooling, and one with a master’s license in every trade in the industry.

Now holding both an HVAC Masters License and a Class A Contractor License, John built HVAC Unlimited to serve home and business owners in our area with superior results, an aim for perfection, and complete loyalty. Our history shows a deep dedication to mastering our craft, and that’s a fact that happily translates to better service for our clients.

HVAC Unlimited: Striving for Perfection

The road to perfection is one that doesn’t really ever end, and that’s honestly something we love about the HVAC and plumbing industries. There’s always a new technique or type of technology out there, each and every year, and we pledge and put forth ourselves wholly to mastering every last one. For us “Striving for Perfection” isn’t only a slogan—it’s the way we do our business.

We back up our pursuit of perfection by offering our clients the absolute best for each and every service, be it a simple repair or a complex installation project. When you work with HVAC Unlimited you get the advantage of:

  • A complete 100% satisfaction guarantee on all services performed.
  • Factory-trained and certified technicians for every job, with an average experience of 12+ years in the industry
  • No nonsense, clear pricing for all services performed. No hidden fees or wonky, incomprehensible figures.
  • Complete dedication to our clients. Your needs and comfort come first.
  • Full 24-Hour emergency service coverage. When you need HVAC Unlimited, we’ll be there!
  • Great customer testimonials. Paid ads are all good and well, but it’s the glowing reviews from our real clients that really show our dedication to friendly, reliable service.

Carrier Factory Authorized Dealers in Northern VA

We are trained and certified Carrier Factory Authorized Dealers. A fact we’re quite proud of, and also one that enables us to offer clients products that match our dedication to superior service. Carrier products are some of the best in the industry, and so we know that when we perform an installation or replacement service we’re offering you the best we can muster on all fronts.

HVAC Unlimited Serves Northern Virginia

You want someone who will take care of you promptly with expert care when heating, cooling or plumbing issues strike. We promise to respond as fast as possible when you call us with an emergency issue. Just contact us on our service repair hotline, and we will schedule your plumbing service or A/C repair and have a technician sent to your home or business right away. Serving Prince William, Fairfax, and Loudoun counties, including:

Our highly-trained and qualified technicians at HVAC Unlimited, Inc. strive for perfection when working with all clients, residential and commercial alike. From installation to service, your comfort is our goal and we’ll work until you are completely satisfied—charging customers for the job, not by the hour.

See What Our Satisfied Customers Are Saying

Local Reviews
for Northern Virginia

Rated 5.0 out of 5 stars based on 577 customer reviews

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.


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
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24/7 SERVICE
EMERGENCY SERVICE

We have staff on call at any time of the day or night, every day of the year so that we can provide assistance during emergency situations.

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