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Herndon, VA Air Conditioning Repair & Service

Located in the heart of Washington, D.C.’s suburbs, Herndon is a picturesque settlement that continues to grow at a rapid clip. Like many surrounding communities, Herndon boasts an ample supply of single-family housing as well as higher-density complexes that cater to young, white-collar professionals and families with small children. The city lies along the so-called Dulles Technology Corridor, a concentration of tech firms that has often been compared to Silicon Valley. Its population sits between 25,000 and 30,000, but the area remains ripe for further growth. Herndon’s attractions appeal to visitors of all ages and inclinations. During the warm season, the Friday Night Live concert series and Herndon Farmers’ Market keep folks entertained throughout the day. In June, the famous Herndon Festival draws visitors from across Virginia and Maryland. Although Herndon does experience annual cold snaps and occasional summer heat waves, the weather is generally pleasant for these events.

Herndon’s residents and business owners count on the NATE-certified, Virginia-licensed air conditioning repair professionals at HVAC & Plumbing Unlimited. With more than two decades of heating and air conditioning service experience, HVAC & Plumbing Unlimited’s technicians can perform a wide variety of installation and maintenance tasks. They’re on call around the clock to repair and service all of HVAC & Plumbing Unlimited’s state-of-the-art Carrier systems.

Local Reviews
for Northern Virginia

Nori – Herndon, VA

Great service

Ann – Herndon, VA

Jermaine Allen was courteous, efficient and knowledgeable.

John – Herndon, VA

A call was placed to the HVAC answering service the previous night. We were asked if we required a call back that evening but declined as felt we could manage till morning. At 7:30 am the following day (Wednesday, 27 December) We got a call from Cindy who said our tech would be on site between 1000 and noon. We received a call around 930 from Jermaine who said he would be on site at 1000 am. He arrived at 1000am on the dot and immediately started diagnosing the issue. He quickly found the problem and got the Heat pump blower motor running again very quickly. He provided some valuable insights on our TRANE unit and the repair that was being done. He documented his work and answered all the questions that we had about our system. Both my wife and I found Jermaine friendly, knowledgeable, and courteous. We both commented that from a service call perspective (any type of service) this is one of the best ones we’ve ever experienced. In the future, for any additional service work we plan on asking for Jermaine personally and would recommend HVAC and Jermaine to anyone in the neighborhood that requires Heating and A/C service. He did a fantastic job and my made a great impression on both my wife and I. Thanks again for the great work Jermaine!

Tim – Herndon, VA

Great service!

NANCY – Herndon, VA

Personable Tech,Through work

Great Harvest – Herndon, VA

Great turn around time, called to let me know when he was arriving and was on time.

Terry – Herndon, VA

Great job!

Serena – Herndon, VA

Superior knowledge and service! The best technician ever!

Nancy – Herndon, VA

William came yesterday and did a fine job. Professional and personable.

BJNoVa – Herndon, VA

Always good service with HVAC–comfort that heating and cooling systems will work and if not, great technicians will quickly put things back in order.

Serena – Herndon, VA

Very knowledgeable and highly skilled.

James – Herndon, VA

Great transaction

Terry – Herndon, VA

I switched to HVAC Unlimited after an unfortunate experience with another HVAC company. I am now receiving professional and courteous service from an honest company that does not try to “up sell” with every visit. Jeremy is the best technician ever. Thank you!

Darrin – Herndon, VA


BETTY – Herndon, VA

Technician was thorough, kept me informed, extremely courteous.

Serena – Herndon, VA

Always excellent service. Jeremy is a great technician. We are always very pleased.

TIM – Herndon, VA

Great job!

JONATHAN – Herndon, VA

Great job!

Betty – Herndon, VA

Great job!

Terry – Herndon, VA

I was told by a different HVAC Co, that my HVAC unit “would not last the summer”. Recommended replacing entire unit & furnace. A friend recommended HVAC Unlimited. They came, did a thorough review of my HVAC units and solved the problem for less than $300. Integrity & professionalism – what more can I say!

Serena – Herndon, VA

Excellent quality of service. Jeremy is experienced and knowledgeable. He cares about doing his best. I trust him to keep our heat and a/c units running well each season..

Brian – Herndon, VA

Great company.

Miss Sugaathri – Herndon, VA

Great job!

Stan – Herndon, VA

Wonderful service. Quickly got the job done and done very professionally at our medical office. Honest , reliable , on time, and price was very reasonable. They aim to please their customers !!! Already have more work for them to do. Great job Jeff!! Thank you Rebecca for the referral.

Dennis – Herndon, VA

Their tech ned was in, analyzed situation, repaired the bad part, and was off. No issues.

Donato M – Herndon, VA

First of all, I called and got an appointment for the same day, later in the afternoon. Ned came out to assess both of our units. He spent a lot of time with me explaining the issues, and he really knows what he’s talking about. Ned didn’t pressure me into anything, and explained all the options with respect to pricing. He is a consummate professional and I’m happy to have found HVAC Unlimited.

Oress – Herndon, VA

Ned was very efficient and personable.

James – Herndon, VA

Great job!

Nancy – Herndon, VA

We were introduced to HVAC Unlimited 8 years ago and remain very pleased with their served. After installing a heat pump 8 years ago, our all electric home and our all electric rental home have been maintained by this company. The change in our electric bills was immediately reduced out heating and AC bills. We are now pleased that they recently they can provide plumbing service, even the small things like toilets and faucets. You can be sure we will call them first of this.

Mike – Herndon, VA

As always, Ned & the HVAC crew come through! I wouldn’t have anyone else service our equipment – they know the the job & get it right! Thanks Ned & HVAC!! Got some plumbing upcoming & I’ll be giving you a call!

What Our Customers are Saying

I had my inspection done by Steven Worthy yesterday and I definitely wanted to make sure you thank him for putting...

M. Scozia

Steve just finished the service and did an OUTSTANDING job! Keep up the great work and thank you.

K. Lippold

Thank you! Great service. Your employee is first rate. Josue is a nice young man.

B. Henry

Great Job changing sump pump by Chase Scott. He also gave me advice and knowledge for keeping and maintaining prop...

Azin Razavieh

Chase was super helpful in replacing my garbage disposal and fixing my toilet. He was super friendly and completed...

Erik M.

Chase Scott provided great service. Very friendly. He found the problem quickly. He showed me what the issue was a...

Jodie B.
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Why Choose HVAC
& Plumbing Unlimited

Dedicated to friendly & reliable service

We’re dedicated to your comfort

No-nonsense pricing for all services

Factory-trained and certified technicians

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Serving Northern Virginia
and the Surrounding Areas

We are committed to bringing our community fast, affordable home comfort solutions.