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John Nugent & Sons Inc

4.8(
1,248
)
Heating and Air Conditioning Service, Plumbing, Electrical,

About us

John Nugent & Sons is Northern Virginia's Air Conditioning, Heating, Plumbing and Electrical 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. Whether you need maintenance, repair or replacement, we want to be your heating and cooling service provider in McLean, Arlington, Falls Church, Vienna, Great Falls, Sterling, Ashburn, Reston, Herndon, Chantilly, Centreville, Fairfax, Dulles or anywhere in the surrounding areas. Additional phone number - (703) 291-1926.

Business highlights

Family owned & operated
Emergency services offered
50 years of experience

Services we offer

Heating & air conditioners – furnaces, geothermal heat pumps, cooling & boilers, plumbing – water heaters - tankless, sewer lines, garbage disposals, bathroom remodeling, septic, sewage ejector, well, sump, water softeners, filtration, quality testing, booster & leak detection, electrical – generator, circuit breaker, panel replacements, attic & ceiling fans, wiring – outlets, home, pool, hot tub & appliance & lighting - outdoor, recessed & security.

Amenities

Eco Friendly Accreditations

Yes

Emergency Services

Yes

Free Estimates

Yes

Warranties

Yes

Senior Discount

10%

Accepted Payment Methods

  • Check
  • Visa
  • MasterCard
Our recent projects
  • 7
    View Gallery

    Assorted photos uploaded by John Nugent & Sons Inc

  • 1
    View Gallery
    2018

    Mini Split

    Heating and Air Conditioning Service
  • 1
    View Gallery
    2018

    Mini Split-Exterior Hide Line

    Heating and Air Conditioning Service
Reviews
4.81,248 Reviews
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Number of StarsImage of DistributionNumber of Ratings
5
89%
4
6%
3
2%
2
1%
1
1%
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Filter reviews by service

Showing 1-25 of 1248 reviews
Zafar A.
Jun 2025
1.0
$53,700
Extortionate pricing! We replaced three smoke detectors (supplied the new ones ourselves) and were charged $537 for what amounted to 45 minutes worth of work. The work was OK but the pricing was pretty extortionate. When scheduling the visit, I described the work in detail and asked the company for a quote. They said they would need to come and look at it and would charge $95 for the visit if no work was done. When the electrician arrived, he took one look at the smoke detector and said their standard price was $179 to replace each detector with customer-supplied detectors. Unfortunately, by then I was already out $95 and wanted to get the work done (since these are smoke detectors). If this was a standard price, then why couldn't they tell me on the phone up front. I would have just gone to someone else. I feel like we've been price gouged.
Joka S.
Jun 2025
1.0
$30,000
After several phone calls Nugent and Sons agreed to refund the $205 I was overcharged. They sent me a check which I deposited Tuesday. The story should have ended there but unfortunately my bank informed me today (3 days later) that the check had bounced. I've spent today trying to get the check replaced. Everyone is very polite but I am still owed $205.
Zafar A.
Apr 2024
1.0
$53,700
Extortionate pricing! We replaced three smoke detectors (supplied the new ones ourselves) and were charged $537 for what amounted to 45 minutes worth of work. The work was OK but the pricing was pretty extortionate. When scheduling the visit, I described the work in detail and asked the company for a quote. They said they would need to come and look at it and would charge $95 for the visit if no work was done. When the electrician arrived, he took one look at the smoke detector and said their standard price was $179 to replace each detector with customer-supplied detectors. Unfortunately, by then I was already $95 out and wanted to get the work done (since these are smoke detectors). If this was a standard price, then why couldn't they tell me on the phone up front. I would have just gone to someone else. I feel like we've been price gouged.
Mel P.
Mar 2023
5.0
Yes, I recommend this pro
$20,000
Great! First-class family-owned small business.
Response from

"Thank you for taking the time to write your review. We are glad to have you as a customer"

Peter B.
Feb 2023
1.0
$35,000
There is no other way to summarize my review other than "John Nugent & Sons tried to fraudulently sell my 91-year-old mother a new furnace." They did this in the most despicable way possible, by injecting fear into her mind. Fear that her furnace was emitting carbon monoxide levels that were unsafe, as well as the ludicrous claim that flame roll-out from the furnace was a possibility. They came out on a service call for a furnace that had died. The technician replaced the igniter and fixed the problem. Then he performed some carbon monoxide measurements following a protocol that I had never seen before. I've been in the homebuilding and residential construction consulting business all my life. More importantly, for ten years (2009- 2020) I was an accredited building scientist, holding the Building Performance Institute Building Analyst designation. BPI is the leading residential building science accreditation for people working on existing homes. BPI-BAs are trained to perform Combustion Appliance Zone Safety Testing, commonly referred to as a CAZ test. This is testing on atmospheric drafting (as opposed to sealed combustion) appliances such as furnaces and water heaters. I write this review to both warn people away from John Nugent & Sons and to direct consumers to independent experts who can assess their atmospheric drafting appliances correctly, and without the inherent conflict of interest of a company that wants to sell you a new furnace no matter how big a lie they must tell the consumer. Google home energy auditors or simply go the BPI website and search for these folks by state. The John Nugent & Sons technician, using a testing protocol that is nowhere to be found in any BPI testing, measured 15 ppm of carbon monoxide in my mom's home and told her that per company policy he had no choice but to turn off the furnace and provide her with space heaters until she had her furnace replaced. He tried to scare her into thinking this was a serious health concern. He went one step further in his "fear tap and dance" by mentioning the possibility of flame roll-out. Flame roll-out is the worst outcome of severe back drafting of an atmospherically drafting gas appliance. I was there listening to this and since I know how leaky (ie- drafty) this house is I knew from experience that you could likely never cause this furnace to back draft. The CAZ testing protocol to assess if there's a carbon monoxide danger from atmospherically drafting gas appliances is complicated but suffice to say John Nugent & Sons did none of these steps. They include testing for a baseline atmospheric pressure, spillage and draft, as well as putting the entire house into a state to induce a worst-case depressurization scenario. These tests must be performed and given a Pass/Fail determination (with the exception of the baseline pressure), in order to assess the carbon monoxide levels. John Nugent & Sons did none of this and tried to pass themselves off as experts and scare her into buying a new furnace. Two days after this incident I was able to get a BPI- Building Analyst into my mom's home to perform a CAZ test. Now remember, Nugent & Sons measured 15 ppm carbon monoxide and told my mom they needed to immediately turn off the furnace and replace it. Carbon monoxide detectors don't trip unless they measure 70 ppm of carbon monoxide over 1-4 hours, or 150 ppm over 10-50 minutes, or 400 ppm over 4-15 minutes (Nugent & Sons measured for approximately 20 minutes and the highest it got was 15 ppm of CO). A well-tuned gas stove puts out 5-15 ppm of CO, measured near the stove. The BPI- Building Analyst I hired did a full CAZ test and we learned the furnace is completely safe. They found that the CO level in the flue was 23 ppm and there is virtually no chance to back draft the CAZ. I know this was a long review, but I'm so mad at this blatant attempt at fraud that either I warn consumers away from Nugent & Sons here or I go tell my story to the Fairfax County district attorney and see what they will do with this information.
Response from

"John Nugent & Sons is a family owned and operated company with an outstanding name and reputation in our profession. We have no need perform scare tactics on our customers many on whom have used John Nugent & Sons for 20 plus years. All of our technicians are trained above industry standards and are extremely precise in their testing. This furnace is 23 years old replacing a heat exchanger and extensive repairs are not an effective way to solve the issue on a furnace that is out of warranty. We have serviced this system for 5 years and even replaced the air conditioning at this home. Under no circumstances are we looking to use scare tactics to sell systems. We have a record of various repairs and checks done on this furnace never in the past have we recorded a CO leak until this visit. Our technicians are always looking out for our customers best interest and are very aware of the dangers that come along with a CO leak in a furnace. With all this being said we are happy to come back out with supervisors and perform re-test and review over the report that you received from another company. Additionally, we are happy to have you stand by onsite and watch over all the test performed and see results alongside our supervisors. All of this will be done free of charge to ensure your satisfaction and explain all results. Please contact our office and ask to speak with our service manager to schedule. We are confident that after speaking with our supervisors you will see this is not a tactic to sell systems but is a test performed to ensure the safety of all of our customers and their families."

Adsm K.
Jan 2023
5.0
Yes, I recommend this pro
$1,600,000
Perfect! 10% satisfied
Response from

"Thank you for taking the time to write your review. We are happy to have you as a customer of John Nugent & Sons."

Deborah F.
Oct 2022
5.0
Yes, I recommend this pro
$7,995
I was pleased with all aspects of their service. The person answering the phone was helpful and friendly, and it was easy to make an appointment. The service technician (Joel Miller) arrived promptly and was engaging and professional throughout. He conducted the furnace inspection efficiently and went above and beyond by answering all my questions and explaining features of the furnace, water heater, gas stove, and outside vent. I was impressed by Joel's expertise and his friendly style in imparting information. There was nothing rushed or pressured about the visit. I would recommend this company to others and highly recommend Joel Miller as a technician.
Response from

"Thank you for taking the time to write your experience with our company. We strive for greatness and are happy to hear that Joel is working to our standards."

James W.
Oct 2022
5.0
Yes, I recommend this pro
Excellent counsel from Jason on what to look for (oil leaks off the filter he replaced) as well as suggestions (keeping all registers open and unblocked by registers or furniture
Response from

"Thank you for taking the time to write your experience with our company. We are happy to hear that our technician was able to inspect, diagnose [Member Information Removed] repair your system. We appreciate your trust in John Nugent & Sons."

SL H.
Oct 2022
5.0
Yes, I recommend this pro
Jason investigated the issue and knew exactly what needed to done. Walked me through the troubleshooting process so I was aware of his process of elimination. Excellent work!
Response from

"Thank you for calling on us to repair your furnace. We are happy to hear that our technician was able to inspect, diagnose and repair your system. We strive for greatness and are happy to hear that our technicians are working up to our standards. Thanks again for choosing John Nugent & Sons."

Haroldine B.
Oct 2022
5.0
Yes, I recommend this pro
Technician was capable, checked unit elements, cleaned it and explained what I needed to do to maintain electrostatic cleaner and showed me what was causing unnecessary noise and eliminated it.
Response from

"Thank you kindly for the time you took out of your day to share your appreciation with us. We are happy to hear that our technician was able to inspect, diagnose and repair your system. We strive for greatness and are happy to hear that our technicians are working up to our standards. Thank you for your trust in John Nugent & Sons."

Paula D.
Oct 2022
5.0
Yes, I recommend this pro
$40,000
This job went great! I was called before hand to let me know tech was on the way. Shawn arrived on time and removed an old one piece toilet and installed new two piece toilet in secondary bedroom. He also took the old toilet with him and cleaned up after job was complete. Very happy with my service.
Response from

"We appreciate your feedback. Thank you for choosing John Nugent & Sons! We appreciate your business and your kind words."

Ron P.
Oct 2022
4.0
Yes, I recommend this pro
Great job. Not only fixed my furnace issue but adjusted for best performance and then educated me on things I should keep an eye on down the road… just in case. Very professional. Would be 5 stars if priced just a bit better, but the service Jason provided is certainly excellent.
Response from

"Thank you for calling on us to repair your furnace. I am glad to hear that he went over and beyond with educating you on things to keep an eye out for. We want to gain your trust and assure you that you made the correct decision to call John Nugent & Sons for your repair. Fixed right the 1st time!"

Diane D.
Oct 2022
5.0
Yes, I recommend this pro
$40,000
Fabulous. Jason my tech was punctual and explained everything he was doing and what he found. He replaced all my filters and was very pleasant.
Response from

"We are glad to hear that you were satisfied with the work that our technicians performed. We appreciate your review and your trust in John Nugent & Sons."

Christina U.
Oct 2022
5.0
Yes, I recommend this pro
$30,000
I’ve worked with John Nugent & Sons for years on HVAC maintenance and repair. So when I had some issues requiring a plumber, they were a natural choice. Was able to book an appointment for the following day. There was a delayed arrival of scheduled plumber, so Tika kindly arranged with one of their on-call plumbers to come out. Shawn was amazing. Knowledgeable, professional, and friendly. Identified the problems immediately and fixed them quickly. I am very happy to be working with John Nugent & Sons.
Response from

"Thank you for continuing to be a loyal customer of ours. We are glad to hear that our CSR was able to assist you with getting a plumber scheduled and you were satisfied with the work that they performed. We appreciate your review and your support over the years. Thanks for trusting in John Nugent & Sons."

JL R.
Aug 2022
1.0
$130,000
John Nugent & Sons service call - My experience Kenny called 40 minutes prior to arrival on site to install the outdoor unit fan motor, we did not answer and he left a message. He knocked on the door and rang doorbell when he arrived, again we did not answer as we were getting ready for work and did not hear. He again knocked and rang doorbell to let me know that he was onsite and that he was about half way through the installation of the fan motor, he wanted to make sure that I knew he was there. After completion of installation of the outdoor unit he knocked on door and rang doorbell, my son answered and he presented his invoice for payment. NOTE; He has yet to come in the house to see if the AC is actually working. My son provided a CC for payment, it was processed and Kenny advised that we would receive an email with the receipt. My son asked if was going to come in and check the system, he said no, the system is working fine. Question? How would he know this without coming into the house and measuring the temperature of the air at the vent and comparing it to the return temperature? Starting AC: Delta T between 16°F and 22°F. When you start AC, the difference between the current temperature in the room and the air coming out of the AC vents (in HVAC, we refer to this difference as ‘Delta T’) should be the highest. Running AC: Delta T between 14°F and 18°F. When the AC is running for some time, you should see the temperature coming out of the AC vents lower by about 1°F-4°F. AC Close To Set Temperature: Delta T between 10°F and 14°F. When the temperature in the room is close to the temperature you set on the AC thermostat, you should see that the air coming out of the AC is not as cold as it was below (Delta T reduction). My son told me that he had paid Kenny and that he left. I asked if he came in the house and checked the system. He said no, Kenny told him that we needed a maintenance contract for him to perform that work. How can he know that the AC system is working without checking it? Telling me that the motor is running pulling the correct amperage has nothing to do with the system cooling. That tells me that the fan is working properly. I approached Kenny in his vehicle and asked if he was going to check the system, he said no, it was working fine. I asked him how could he know if he didn’t come inside? He said I needed to call the office and get a maintenance contract. He did not check the temperature of the air at the vents. He did not check the indoor unit, the pan, over flow switches, filter condition, nothing. He replaced the fan motor and left. In closing, I will never use John Nugent & Sons again. I will make sure to post this review on social media. I would certainly never purchase or recommend a maintenance contract based on this level of service for a repair call. invoice# 644566 John Richardson
Response from

"It is my understanding that management has spoken with you and that you are very receptive to the solution offered by management. JNS does believe in maintaining customer satisfaction to the highest levels and will continue to work diligently to satisfy this customer and any one of our new or existing customers that are not satisfied with our services. Thank you for bringing this to our attention and please do not hesitate if you need anything else."

Timothy C.
Jun 2022
5.0
Yes, I recommend this pro
$260,000
Work was done exactly as they said it would be, with great quality, care and consideration. Work was completed in half the time they estimated.
Response from

"Thank you for taking the time to write your review. We are glad to hear that you were satisfied with the work that our technicians performed. We appreciate your review and your trust in John Nugent & Sons."

Donald L.
Jun 2022
5.0
Yes, I recommend this pro
Perfect. Quick despite being a difficult job. No mess. Courteous service. Shawn was confident, experienced, and capable. He provided the quality service I have come to expect from John Nugent and Son's for all my HVAC needs.
Response from

"Thank you for taking the time to write a review. We are happy to hear that Shawn was able to provide quality service with confidence in a timely manner. Thanks for trusting in John Nugent & Sons."

A L.
Jun 2022
5.0
Yes, I recommend this pro
Called John Nugent & Sons after hours and left a message on HVAC emergency line. Got a call back from their technician Chung Lin very quickly, who told me to look for any blown fuse in the furnace circuit board inside the house, not the exterior AC unit, and offered to come out if needed. Sure enough found a blown fuse and replaced it. Problem solved. Excellent and honest expert opinion, free of charge.
Response from

"Thanks for taking your time to write your experience with our company. I am happy to hear we were able to help you resolve the issue. We strive for excellence so the part about being Honest and expert opinion is what counts, glad to hear it!"

Nina L.
Feb 2022
5.0
Yes, I recommend this pro
I called John Nugent & Sons and Brandon came, discussed the problem with me, and gave me an estimate. I scheduled the work and he came back yesterday to install the new amp. He was very professional and the area was spotless when he was done. I would 100% recommend Brandon and John Nugent & Sons. So happy to have found a great electrician and company finally!!!
Response from

"Thank you for the kind words and taking the time to write your experience. We are happy to have you as a customer. I will make sure to pass on the review to Brandon's boss. Once again thank you for trusting in John Nugent & Sons."

Jamie W.
Feb 2022
5.0
Yes, I recommend this pro
We were extremely happy with the work John Nugent & Sons did for us. We were particularly pleased with both Jorge and Justin. We needed to have an outdoor line run from our circuit box to an outdoor location and have 2 separate GFCI circuits installed for our swimspa (hottub and small pool) + an outdoor outlet installed. Lots of complications arose due to the complex nature of connecting to the spa tub…but nothing they couldn’t handle! Always on time, great communication, and lovely to have around! About a month later, we had to replace the new spa…Jorge returned to both unhook and reconnect the new spa…with flawless work. Would trust these guys with anything complicated!!! And the work looks absolutely stunning!!
Response from

"Thank you for taking the time to write your review. I am happy to hear that we were able to assist you in a timely manner with the electrical work that was needed. If you find yourself in need of assistance with any plumbing, heating, or AC we can help with that too don't hesitate to call. Thank you again for trusting in John Nugent & Sons we are glad to have you as a customer."

Nicholas K.
Jan 2022
5.0
Yes, I recommend this pro
$150,000
Mr. Youness El Oikili from John Nugent and Sons did an outstanding job installing a new complex Carrier II thermostat - he was professional, courteous, considerate, technically astute and completed all the work on schedule and on budget -- and the thermostat works superbly. I highly recommend John Nugent and Sons -- and commend their outstanding technician, Mr. Youness El Oilili. I purchased for the thermostat and the installation - received a discount because the Thermostat had a high wholesale price.
Response from

"Thanks for taking the time to write your review. I am happy to hear we were able to help get your thermostat working properly in a timely manner. We appreciate you trusting in John Nugent & Sons."

David T.
Dec 2021
5.0
Yes, I recommend this pro
They were the lowest bid of four contractors. They also offered State water heaters. The State WH they were replacing had serviced me and my family for 40 years and 2 months. They worked with me on getting the upgraded State WH I desired. hey projected 4 hours to complete the job. They were in and out in 2-hours and 15 minutes. Not one drop of water spilled on hardwood floors as the old heater, which could not be completely drained before the removal was taken through the house. Outstanding customer service and plumbers that did the job. We plan to have them become our HVAC maintenance contract after our current contract concludes. I was referred to Nugent by another satisfied customer. I am fully satisfied and they are firm located in Northern Virginia.
Response from

"Thank you for taking the time to write your review. I am glad that we were able to assist you promptly and with the best price on the replacement of your water heater. Thank you for trusting in John Nugent & Sons."

Julia G.
Dec 2021
4.0
Yes, I recommend this pro
They have been excellent and I have no complaints. I would highly recommend them as well.
Response from

"Thank you for your kind words. We are happy to have you as a customer."

Ilse B.
Sep 2021
5.0
Yes, I recommend this pro
$320,000
Larry was fantastic, he arrived on time, gave us pricing and completed the work in one day. He was very professional, clean in his work, polite and thorough.
Response from

"We are glad to have you as a customer. Thanks for taking the time to write your review. We can assist you with any of your heating/ cooling or electrical too. Don't hesitate to call. Thanks again for trusting in John Nugent & Sons."

Amit P.
Aug 2021
1.0
$15,000
Before I start, I wanted to say that I've used John Nugent and Sons before on my other property and have been happy with their services. Recently we purchased a new property and contacted them to check our HVAC system for any issues. The technician arrived and I showed him the units. Honestly, he didn't appear much freindly. He told me that he will only check the AC units ( 1 in the main level and 1 in the attic). While opening the main level unit he was constantly complianing that the unit was not installed in the right manner and was struggling to open the main conduit. He finally opened and did some minor checking and moved on to the upper level unit. He did not spend much time with the 2nd unit as well, just checked the drain pipe and moved on. He gave me the report and moved on. 2 weeks after the check, I have my drain pipes clogged and water leaking from the main unit. I'm sure the technician did not do a thourough job of checking the drain pipe. The other techs from John Nugent also clean the drain pipes - this one refused to do any such work. Just wanted John Nugent to know that I'm not happy with their service this time around.
Response from

"We appreciate your loyalty to our company want all of our customers to feel they have gotten a reasonable cost on the services that we done at their home. I can see that you did not feel that way and I would be happy to discuss this with you. Please call the office to speak with me directly regarding your repairs. Thank you again for trusting John Nugent with your business."

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Licensing

Bonded
Insured
Licensed*

Trade License Number

2705004543

Trade License Expiration

07/05/2025

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

John Nugent & Sons Inc is currently rated 4.8 overall out of 5.
Monday: Open All Day Tuesday: Open All Day Wednesday: Open All Day Thursday: Open All Day Friday: Open All Day Saturday: Open All Day Sunday: Open All Day
John Nugent & Sons Inc accepts the following forms of payment: Check, Visa, MasterCard
Yes, John Nugent & Sons Inc offers free project estimates.
Yes, John Nugent & Sons Inc offers eco-friendly accreditations.
Yes, John Nugent & Sons Inc offers a 10% senior discount.
Yes, John Nugent & Sons Inc offers emergency services.
Yes, John Nugent & Sons Inc offers warranties.
John Nugent & Sons Inc offers the following services: Heating & air conditioners – furnaces, geothermal heat pumps, cooling & boilers, plumbing – water heaters - tankless, sewer lines, garbage disposals, bathroom remodeling, septic, sewage ejector, well, sump, water softeners, filtration, quality testing, booster & leak detection, electrical – generator, circuit breaker, panel replacements, attic & ceiling fans, wiring – outlets, home, pool, hot tub & appliance & lighting - outdoor, recessed & security.

Contact Information

45921 Maries Rd, Sterling, VA 20166

Service Hours

Sunday:Open All Day
Monday:Open All Day
Tuesday:Open All Day
Wednesday:Open All Day
Thursday:Open All Day
Friday:Open All Day
Saturday:Open All Day
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