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Keeping your home warm is crucial during our harsh winters. Whether you need installation, repair, replacement, or maintenance of your heating system, we can help! Summers can be brutal-especially with the humidity-and sometimes the only way to find relief is in a cool home. If you need an AC services, John Nugent & Sons is the company for you! John Nugent & Sons is Northern Virginia's heating, air conditioning, plumbing, and electrical service experts.

Since 1975, we have been providing residential and commercial services that have helped people reduce their utility costs and increase their home or businesses' temperature, plumbing, and electrical efficiency.
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John Nugent & Sons has been a family owned and operated company since 1975. We pride ourselves on providing the high quality of service and very personal touch that only a family company can offer. It is our belief that each and every customer deserves to be treated with the same respect and honesty as a member of our family.
As a family-owned and operated business, John Nugent & Sons has taken great pride in being able to provide patrons in Virginia with reliable, effective heating and cooling solutions for over forty years. We take great care to always put your needs first, which has been a driving force of our business since the day we opened our doors!
Our services areas are Alexandria, Vienna, Falls Church, Leesburg, Herndon, Fairfax County, Arlington County, Loudoun County, and throughout Northern Virginia. Please contact us if you have any questions about the areas we service. Providing HVAC, plumbing, and electrician services in Ashburn and the surrounding neighborhoods of Ryan, Belmont, Broadlands, Brambleton, Waxpool, Town Center, University Center, and beyond.
Homeowners in McLean need a working HVAC system to keep their homes comfortable and their families safe. Yet sometimes that system will not work like it's supposed to. When you experience problems with your HVAC system, look no further than our team at John Nugent & Sons. For the past 40 years, we have been serving families in McLean and the surrounding communities, and we can help you with a comprehensive list of HVAC services. When your home needs a new HVAC system, trust the team at John Nugent & Sons.
Reviews (29)
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Michael Souza
Jun 23, 2022
I had an old cast iron boiler that was the original and very inefficient. I knew it had to go. The house I bought had a new hot water heater but I guess the original owner was too cheap to do it right and get a combo tankless system. Natural gas prices keep going up so I decided to have a combo tankless system put in. John Nuggent and Sons had the best quote by far. 3 of the other quotes I received used the same exact Navien system but were much more expensive.

Some say the cheaper the price the less quality of a product. Well not with with these guys. The installer and his crew did an amazing job. The system was very neatly installed and all the components very well organized. I am very pleased with the job they did and I will be using John Nugget for all my future big jobs. Next on my list is a generator.
Navin Kumar
May 20, 2022
This was our first cooling check with John Nugent. Jason did an outstanding job. He did a thorough job of testing AC systems and provided the detailed feedback. There were shrubs around A/C unit outside. He went beyond his duties to prune some shrubs himself to ensure the A/C unit is not being blocked. He also provided advice on how to keep A/C unit clean all around. JASON - you are the best! Appreciate your service
Craig Griffin
May 13, 2022
With severe weather on the increase these days, I decided to move forward on a perk I wanted for years, a whole house backup generator. J. Nugent wasn't the lowest bid for the job, but they were one of the few who actually had generators in stock and could get to the job months before other vendors. Seems everyone wants a generator these days and Generac is behind on producing enough.

Local vendors swamped with jobs I find out, did my research. RJ was my salesperson, smart guy, no sales pressure, he was very professional and fairly quick to answer emails. RJ made sure I had the proper gas supply and meter for the job. Job took 6 hours, crew onsite were polite and informative and laughed at my dad jokes. My only complaint was no call or email or text to confirm the big job the day before. So in conclusion John Nugent rocks, like Ted Nugent! (Dad joke). They will be my primary electrician now.
Gamar Y.
Apr 27, 2022
My whole experience with John Nugent & Sons was very positive starting from providing me a quote up to the installation of new equipment - Carrier Infinity heating/cooling. Lucas was very patient and not pushy to make a decision and I took all the time to research, consult and finally make a decision on the equipment brand and model. He was addressing all our questions diligently and met all our conditions which made our decision to work with John Nugent.

Thanks for excellent support Lucas! The installation went great, the crew -Jorge, Juan and Nicholas came on time, worked very professionally, accurately and clean, explaining us all the issues and clarifying questions. We appreciate their suggestion on how to use the system effectively so that it serves for longer years though it added more hours to the work.

They protected the floors with the fabric and cleaned after finishing the work. We are also thankful to Dave who came today and installed a surge protector and took time to explain how it works. Excellent work guys! And thanks to customer support which is very responsive and helpful. Now is the turn for the equipment to show itself and prove we've made right decision in going with the best of the line:- We would definitely recommend John Nugent & Sons to anyone who wants quality and value for their money!
Chad L.
Apr 04, 2022
Nugent recently installed a whole house generator for us and one of the techs was Jake Harrington. The crew did a masterful job despite some troublesome weather. Since then Jake has done outstanding follow-up work for us and our neighbor, who also received a Nugent-installed generator. What truly has made Jake a standout for us is how he has responded to the failures of a generator component in both our units, how he identified the problem (bad hardware) and the lengths he went to to provide replacements and notification to the manufacturer. Techs like Jake are a credit to the industry and underline our confidence in Nugent.
Ron M.
Mar 31, 2022
I had an issue where my furnace was intermittently shutting off the heat - it was a really strange issue where it would work sometimes and heat would emanate and then sometimes it wouldn't, even if the thermostat was freezing cold. The technician, Jason, came and surmised after analyzing the furnace that there weren't issues with the furnace itself.

He believed there were condensation issues and worked on the condensation pipe, cutting it to facilitate proper clearing. Unfortunately, after he left, the issue continued. I called John Nugent and they sent him back. We were stumped. He and I had a conversation and we followed the pipe through my house to the outside - then he figured out what the issue was!

It was a little tricky to diagnose, but Jason was very patient and took the time to try to explain his thinking on the problem as our thinking evolved on the issue. I had a really good experience with John Nugent, and would have them back again as a result.
Kathleen A.
Mar 24, 2022
Amazing company all around! Great customer service, fast and efficient, and trustworthy/reliable people. The prices are very fair. By far the best experience we've ever had. I have nothing but great things to say!
Ana Felix
Mar 12, 2022
I was very pleased with this company, especially with the technician, Hunter. He was very professional, pleasant, on time, and best of all, HONEST! I really appreciate a technician and company that is honest and will not try to fleece their customers. This company will now be my go-to for any HVAC or electrical issues and will be purchasing my next HVAC system once ours gives out (which I'm sure will be soon since it's so old). I highly recommend John Nugent & Sons and am recommending them to all my neighbors.
Kathy C.
Feb 15, 2022
We had a pleasant experience overall with John Nugent & Sons. Lucas came for an estimation and he was patient with all our questions and gave competitive quote. Technician team Jorge, Bryan and Steve came for the installment - super friendly and professional. In addition to the great installment they made, they also provided us some tips on finding suitable air filter and energy efficiency.

Last but not least, Bryan and Jorge added a safety switch to our AC pipe to avoid issue of water over-flow - even though this is not part of the contract and not required per code! Thank you for your hard work.
John Martin
Feb 15, 2022
Jorge handled a difficult install remarkably well. He and his helper were very attentive and adapted to my changing requests as to positioning the charger courteously. John Nugent had installed my generator as well and I had a similar outstanding experience. Can't recommend them highly enough. Service: Electric car charger installation
Marie C.
Feb 12, 2022
I have been using John Nugent for a long time. I have never been disappointed. They provide excellent service. Recently, Ben came to my rescue. He is a very experienced and knowledgeable plumber.
Raj Richardson
Feb 05, 2022
I have been using Nugent & Son exclusively since 2015, when I called them in an emergency to replace another HVAC company. I never looked back. Nugent service has been excellent. The technicians have been thorough, respectful, and competent. And while pricing is hardly a consideration when your heat is out in the winter, they also have a fair and competitive price structure. I give them an A+ rating all round.
Glenn Godfrey
Jan 15, 2022
I could not be happier with John Nugent & Sons. They were fantastic to work with in every way. I had a 20' x 20' four season sunroom added to my house in Ashburn and needed a "mini split" system put in. The builder wanted to install a builders grade unit but I wanted "top of the line" which in this case is a Mitsubishi XXXX unit. After I received a quote from the builder for the unit I wanted, I decided to shop it around.

Much to my surprise, John Nugent came in at $3500 less! I of course went with JN & S and could not be happier with every aspect of the transaction. from the quote, to the pre install meeting to the actual installation. JN & S was great to work with as far as the timing of the installation, to cleaning the worksite to explaining to me the operation of the unit.

A special thanks to Erica, RJ and Juan. On a side note. My builder was even so impressed he asked me for their contact information as he would like to use him for future install work. The attached picture shows the unit(s) and the "line hide". Thank you again!
Savannah K.
Jan 12, 2022
Update January 2022: We woke up this morning to find that our furnace was no longer putting out heat and the smart thermostat was blank without power. I reluctantly called John Nugent and Sons because they installed the system before we bought our house and I knew we needed this fixed ASAP before the evening. I had a poor experience with them standing me up with the water heater installation last year but I took the chance.

The person who took my call was nice and helpful. She said a technician would arrive within two hours and he showed up in about 45 minutes! What an improvement from last time! I am upgrading my one star review to a four star review based off of their timeliness this time and the absolutely stellar work from Mr. El-Oukili. He was so friendly, explained exactly what was going on, and fixed our issue in less than an hour!

I will be specifically requesting him next time we have problems with the hvac. TLDR: service was quick and the technician was great. There still may be a chance they no-show but I'll be giving them another shot after this time.
Thomas Jeppesen
Dec 12, 2021
Used John Nugent and Sons for heating and AC issue. They had installed the boiler back in 2018. Very fast response, came out same day. Technician, Julio, was pleasant and super professional and knew our system well. Identified the issue (a stuck valve) quickly and suggested a solution that was less expensive than a full replacement of the valve. Price was reasonable and the promptness and professionalism was great. very satisfied with the service.
Jesse
Nov 05, 2021
I scheduled an onsite estimate for a complete HVAC replacement. They were a no show for the appointment without any notice or cancellation. I called them to follow up, find out what happened and reschedule, and again, they did not show. Not sure whats going on with this company but they appear to not value your business or time right now.
Sarah S.
Nov 01, 2021
We are so pleased with John Nugent & Sons. We haves used them for AC/heating since our move into our house and have always been pleased with the service. Today I called them about plumbing, specifically a recently discovered brake/leak between the laundry room and bathroom. Not only did RL and an assistant come over but they determined & fixed the issue with a couple hours. I am just so pleased. The whole process was much, much less painful than expected. John Nugent is now on my favorites phone numbers list
Leslie M.
Oct 12, 2021
Beware. Nugent technician came to our house twice in an effort to repair our frozen pipe. The initial repair was faulty as the pipe continued to leak around the area where he crimped the repaired pipe. Unfortunately, his second repair was also ineffective. The "repaired" pipe continued to leak unbeknownst to us and has caused significant damage to our basement (over 15K). Plumber from a second company we hired to fix Nugent's work advised the crimping machine Nugent technician used was likely not calibrated properly and the leak got progressively worse with time. (Price charged by second company was also significantly less than what Nugent charged.) We asked Nugent to refund the cost of their repair bills (which we thought was very reasonable considering the loss caused by their faulty work) but they have not done so.
Judith H.
Sep 27, 2021
These people don't show and don't call when they don't. They were supposed to be here between 8 and 12,, and they did not come and did not call. I got a call after I got a message from them claiming they were supposed to be coming later. That was just not true. I called another electrician.
Norm L.
Aug 13, 2021
A/C was making a terrible noise on a 97 degree day. I called N&S and they sent a tech out the next day. Bladimir was a real pro, troubleshooting the unit and determine the need for a new capacitor. He ordered the part and returned the very next day for the replacement. Part was covered under warranty and labor charge was more than reasonable. Best of all, Bladimir was polite, courteous, and professional. Associates like him guarantee customer return to Nugent & Sons.
Lucy Y.
Aug 09, 2021
Have this company helped replacing HVAC unit. They did a very good job with reasonable price, and offered free one year maintenance. We got a small issue a few months later, they showed up for free to help us. Very responsible and thoughtful service.
Wendy M.
May 04, 2021
Had a very good experience with John Nugent & Sons. We had our entire HVAC system replaced in January and it was done flawlessly from initial contact to installation. Our contact with Carl went well, no upselling just an honest evaluation and price. When the team came out for the install it went quickly and cleanly with masks and distancing maintained. Polite, professional and great service.
Care C.
Apr 16, 2021
Highly recommend Ray Carroll with John Nugent and Sons. He's professional, kind, and does efficient clean work. Great guy!
Stephen H.
Mar 23, 2021
HVAC done right, no shortcuts. We got lucky and discovered that we needed new HVAC for our home in March -- best time of year to get that work done. The gentleman who did the estimate helped me understand how the old HVAC had not quite been set up right. For example, the UV lamp and catalyst were in the wrong place in the flow. He assured me that they'd put it in the right place when they reinstalled my old one (perfectly good, no need to replace).

The solenoid for the humidifier had gone bad, but it was work they'd done previously not too long before, so he assured me they'd replace the solenoid and get the humidifier working. He presented solid options which I took a little time exploring online. I felt good with the options, and decided to take advantage of the free financing. They found our parts and we were on the calendar in about a week -- did I mention that March beats December or July for HVAC work?

The crew came as scheduled and got right to work. A couple of issues came up where things weren't going exactly as we wanted. The thermostat they installed was black instead of the white I'd hoped for; I pointed it out and asked if they could swap it out; they found a white one, had it brought to the site, and installed it, no problem. Then the team lead pointed out that the existing UV lamp and catalyst was on a too-short wire to be located where it was supposed to go, but I talked with him about it, saw that we could rewire it to a closer outlet, and it ended up exactly where it is supposed to be.

Bottom line: There were bumps (aren't there always?) but the team made things work out perfectly. They left the house as clean as they found it, wore masks the whole time, and generally put me at ease. They were professional and friendly. More importantly, when I asked a lot of questions, they were patient and knew what they were talking about (it seems -- I'm no expert.) The new system is working beautifully and getting it done was a lot easier than I thought it might be. I am glad to have a maintenance contract with them and I strongly recommend them.
Humza A.
Nov 09, 2020
We reached out to Nugent and Sons to get a quote for some HVAC work in the basement we are remodeling. The Nugent and Sons quote was much, much higher than any other company we were looking at; others were charging between $1200 and $2000 and Nugent's representative Mike quoted close to $6000. When I asked for an itemized quote to understand the discrepancy, Mike Jackson wrote an unhelpful email, noting in his email: "Hello.

We don't break down pricing. We have set pricing. Moving the units is a lot of work. Gas line, flue, extending/changing ductwork etc. same with the water heater." I've worked for a contractor in Fairfax County and know the permitting process well. Anyone can look up the price for permitting, which I did. Adding up the cost of permitting, materials, 6 hrs of labor at $150 an hour, and a healthy margin still didn't get the numbers up to $2k, let alone the $5850 they were charging here.

After I pointed out how much the job should cost, Mike stopped responding to my emails and then told my wife he didn't want to work with us. Having been a contractor in this area; it's deeply disturbing to me that there are companies like this out here trying to pull the wool over people's eyes. Take your business elsewhere. Josh at Brennan's Heating and Air Conditioning will do a much better job for you and your family. They'll answer your questions and won't be condescending or try to scam you. Mike from Nugent was very unhelpful and I wouldn't recommend him to anyone.

We received quotes from several companies (McCarthy Services, ARS, Brennan's, just to name a couple) and Mike was the only one who came off as extremely unprofessional. The rest were a pleasure to work with.
Choong O.
Sep 28, 2020
I am totally happy with Nugent's excellent service. From the estimate to the finish we were completely satisfactory! The estimator was very kind and knowledgeable to recommend the right system just fitted to our house. He was flexible enough to accommodate all options within the budget. He was very efficient and approachable. The installers were very professional and skillful! Also, they explain all questions I asked very kindly. BTW, we replaced all heating system and A/C with Carrier system.

I have nothing but the positive ratings on Nugent services. Nugent was my best experiences among all HVAC services I got last 30 years. I strongly recommend to use this contractor for your HVAC system.
Rachel B.
Sep 14, 2020
Horrible experience today. We are part of RELAC in Reston and the cooling coils for the system need to be replaced (their condensation is dripping into our HVAC). Nugent came to give us a quote on replacing the coils. The technician was so rude - spoke loudly, was very short tempered, and even demanded my husband "stand back" even though he was more than 6 feet away from the tech.

My husband was of course wearing a mask and being careful; we have a newborn and a toddler, and I am an ICU nurse. We go above and beyond to take appropriate COVID precautions. The tech then refused to even *look* at the coils. He claimed RELAC does great work and that he assumed Nugent would charge $3000+ for the service (RELAC quoted us less than 2/3 of that).

He made this claim without even seeing the coils or the condensation into our HVAC unit. He then declared "I gotta get out of here" and stormed out. Completely unhelpful, unprofessional, and rude. Most frustratingly, we are service contract holders with Nugent. We will of course be cancelling said contract effective today. In the past, we had them replace our HVAC (March of 2019), which was a fairly good experience except that the unit was placed on top of a floor drain.

Prior to that, they did some plumbing work for us that was done incorrectly and needed to be remediated the following day, so not great there either. The front office staff is top notch - helpful, responsive, and with great follow up. It's a shame this tech has ruined our relationship with this company.
Kym P.
Mar 06, 2020
On Wednesday March 4th I had a crew from John Nugent and Sons come install a new HVAC system for us, they went above and beyond the call of duty to make the install as smooth and perfect as possible, they even moved my outdoor unit for us since it was to close to the meter. Let me tell you I LOVE OUR NEW SYSTEM! I highly recommend them to anyone who needs any HVAC work, you wont regret it! Ive attached pictures before and after
Tim M.
Jul 19, 2019
We've been using Nugent & Sons since buying our house 9 years ago and having them install a new HVAC system and tankless water heater. Since then, we've had them install a new water pressure tank and never thought twice about calling on them to do other plumbing, electrical, or HVAC services/repairs/installs. We recommended them, felt good about the company, and gave them a pass for things like the HVAC, tankless water heater, and later on the water pressure tank installs not being as seamless as it could have been.

That is until this past week, where I seriously question what's going on with the company. I've written to them without an acknowledgement about what I feel was an inadequate Spring a/c checkup and subsequent run capacitor failure during this past week of high humidity and temperatures. Things happen at the most unexpected times, sure, but having had the company check our a/c system out 2.5 months ago and having not ran the a/c for a month out of that time, then having a run capacitor fail, does not give me confidence that the company did a proper or thorough checkup.

The capacitor was clearly deformed and leaking oil, which is something I would have expected a visual inspection would have noticed was problematic or starting to be. Anyway, I wrote Nugent & Sons, but have not received any response. I said I did not want anything from them in terms of remediation, etc., but a company who is in the service industry ought to at least acknowledge your issue/concern, especially if you've been a customer with them for nearly a decade. Anyway, I guess I'll be searching for a new go to company. Disappointed. 22JUL19 Service manager called.that didn't go very well.

A bunch of excuses immediately off the bat, and evidence did not actually read what I had written. I'm taking away a star for the service manager hanging up on me. 25JUL19 Response: Considering the service manager, who called, hung up on me, I'm not inclined to call. If Nugent & Sons has a change of heart, I'm more than willing to hear something other than excuses.