Scheduled appointment for next morning.
Tech diagnosed and fixed problem within 30 minutes, fair upfront prices. Highly recommend. Thank you.

  I had my air conditioner go out last night and it was super hot!  I called 11 local hvac businesses at 3 am to see who would be able to come repair it the quickest.  John got back to me the quickest and arrived 6 hours later.  He was respectful, professional and made the repair quickly.  His rates were very reasonable.  Highly recommend.

  John came out on a Sunday morning to fix our furnace! He even gave it a tune up. I'd highly recommend him and we'll definitely use him again in the future.

  From the moment I spoke to John over the phone I sensed his honesty and sincerity.  John, came to my house to provide an estimate on my malfunctioning AC unit on his day off, Sunday.
John, provided a very competitive price against 3 other companies, and John's work and service was excellent.  
I was also impressed that he didn't charge me extra labor when more work had to be done.  All he ask for was additional payment for the extra materials used.
John, has come to my house two more times since and, did a fantastic job.  
I highly recommend John.  Small businesses are always harder to trust than the larger companies, but, you can trust that john will provide you honest and sound work.

  JNT was amazing to work with.  Our heat went out on a Sunday morning and we frantically called JNT.  We were pretty sure we knew what was wrong and told them.  Before having us pay for them to come out they suggested we try a quick troubleshooting method that could fix the issue on its own.  They easily could have skipped this and just come out and charged us for it--I so appreciate their attempt to save us money.  When that did not work they were here within an hour and got everything up and running quickly.  John could not have been kinder or easier to work with!

  Another happy customer here. We had an AC issue on labor day and service was prompt and professional and so kind!  Would definitely recommend, and will use again.

  Seriously, JNT really is as good as it gets!! No joke.  I came home yesterday, and some time between yesterday afternoon and evening, our air conditioner went out.  It was 88 yesterday and 92 today.  I called JNT this morning around 10am, and was thrilled that he could fit me in today!  Then he surprised me by calling and saying he could get here 3 hours early if that was convenient.  It wasn't, so he changed his scheduled lunch time to fit with my need to be gone from 12-1:00pm.  Who does that????  WOW!  OK, and more good news, it was done quickly ("I think I have that part in my truck" and he did) and it was -such- a reasonable price.  I expect to be fleeced a little in the North Shore area.  Not this time!  What a wonderful experience.  John is both personal and professional, and I highly recommend JNT Mechanical Services!

  John came out quickly, same-day as inquiry, on a Saturday to install a smart thermostat. Explained the process, helped with set up and stayed to answer all questions. Great service!

  We used john this past weekend for an electrical issue with our dining room switches. Very responsive and reasonably priced. I called four other electricians recommended frequently on a north shore moms board and he was by far the quickest to respond and least expensive to come out and figure out the problem.  He will certainly be my first call next time I need someone for electrical work!

  Our heat when out on Saturday evening, so I called JNT early Sunday at 8 AM as the temp was down to 58 inside our home. Beforehand, I checked inside the furnace and it seemed that the igniter was not lighting the gas but I wasn't sure. JNT was at my door by 9:15 AM (on a Sunday, mind you) and spent the next 45 minutes diagnosing and replacing the igniter and fixing a stuck gas valve. It's 10 AM and we have heat again. Two hours from call to fix... Love it. Thanks to John from JNT!  

We'll probably need a new furnace before next winter (it's 15 yrs old) and JNT will be the first company we call.

  Called John on a Saturday afternoon during the middle of a huge snow storm. Our furnace suddenly wouldn't turn on. The temps were dropping fast outside and I knew we had to have someone out before Monday. Luckily I saw this company on Facebook. I went outside my comfort zone of calling a random company to come into my home. I read the reviews and decided after already calling my old hvac company I've used the past 15 years,  who wanted a minimum of $175 just to put me on their 14 person wait list and couldn't guarantee they'd get to my house by Tuesday, to call John. I immediately liked him. He said he'd be done at the current job he was installing at 4ish. A little before 4pm, he called to apologize, he wasn't done with the current job, but he'd be at my place between 5 & 6pm. No problem at all. ..not like we were in a hurry to leave in the middle of the snow storm! He arrived before 6pm. Immediately figured out the problem. He could've charged us anything at that point to fix our furnace. We have small children in the house and he knew it was only getting colder inside! Instead he was honest, charged us only the $85 rate, got our furnace quickly back up and running. I only wish I found him sooner! He's also an electrician, we'll def be calling John again! ! Can't recommend him enough! 🙂

  JNT Mechanical and owner John are by far the best heating/air service company we've used. John is reliable, professional, and responds immediately to all calls. He was also less than half the price of what we've paid for service in the past, with much better service. Look no further!!!

  My air conditioning system went out.  I called John on a weekend.  He responded quickly and helped me with my issue.  He came out the next day to look at things.  I really appreciated his professionalism,  courtesy, and service.  Thanks John!!

  We called them at 8:00 a.m.. They came for an estimate at 10:00 a.m. and by the afternoon we had a new water tank heater. Amazing services with very competitive prices.

  I found  JNT from Yelp based on the positive reviews from John's clients.  After two times working with John on my AC unit, I definitely recommends John for your AC maintenance and service!  He is very knowledgeable and honest.  After he added Freon to my AC unit, a capacitor from the AC unit was out.  I called John and he was coming to my house the next morning, fixed it and explained it thoroughly.  I would go to him for any of my AC/Furnace maintenance needs in the future.

  I called John at JNT Mechanical based on all the positive reviews. The first time he came out, I needed him to help me light the pilot light on our water heater--which I couldn't for the life of me get to light again. We had been out of hot water for just under a day at that point. He came and lit it Friday morning and told me to give him a call if anything else happened.

Well, the water never warmed up. Our water heater is 14 years old, so it was clear we needed to just replace it. I messaged John bright and early Saturday morning. I told him the model I wanted, and he said he would install it Monday morning. I guess I could have called around to ask if someone else could have come on the weekend, but I just didn't have it in me to try.

On Monday morning (also known as Day Four of No Hot Water...), John showed up exactly when he said he was going to with the exact model of water heater I wanted. It took about two hours to install it, and holy smokes, our water is so much better than before. In hindsight, it's clear that the water heater had been struggling to fully heat water for at least a few months.

I have nothing but good things to say about John. He was really nice, professional, efficient, and upfront about cost. It was a great experience all around.

  This is the second time Johnny has saved the day!

The first was a few years back, doing electrical updating on my condo, and the second was today with my AC unit... up on the roof of a 4 story building. During the week I checked in to see if the expected 97 degrees today would have us rescheduling, but he assured me our appointment was still on. He was able to find a replacement unit for me at a reasonable price and got the job done quickly. So grateful to be writing this review in my (finally) air conditioned home.

Contractors you can trust come few and far between, and I'm glad I know I can count on him for his expertise, reasonable prices, and kindness.

  I have used John from general furnace maintenance to AC compressor replacement without a single hitch. He is a true professional- he helped me stay within my budget when my AC compressor at my office failed. Easy to work with, friendly, timely, and reasonable. Nothing but praises for his company.

  We can not say enough WONDERFUL things about John and this company. Friday night the gas valve unit on our water heater stopped working..we called a few different places and he called back immediately.  He came out to fix the problem but didn't have the peice required so came out first thing Saturday. He was easily reached through text or call and got the job done. To top it off, he is a genuinly nice guy! Definitely going to put him in our phone book for any future needs!

  Last night we had an emergency water heater situation. After frantically calling a number of places, I got hold of John and am I glad that I did. Real nice guy, very fair pricing, considering its off hours at 10pm in the night!He came and took care of the problem. Very impressed with the whole experience. There are plenty of HVAC and plumbing companies out there, but John and his company deserves a special mention! I will use them for all my HVAC needs in future for sure. Five stars from me!!

  I called John on a Friday afternoon, explaining that we moved into a new house in December and when first trying the AC unit on the second floor it wouldn't kick on. He was able to come about 90 minutes later and quickly addressed the issue, a broken thermostat. Luckily we had a nest sitting in our basement, and he was able to install it and we were back in business. He went above and beyond explaining our air filter system to us and gave recommendations on how to make some alterations due to our unit being in a very inconvenient place. Overall top notch service, and highly recommended.

  We moved into a new home in December and were having problems with the heat.  John came out the next day and got everything running and checked out our air conditioning system as well.  He found some problems with air system and repaired that also.  He explained everything he was doing and charged us much less than we had been charged at our previous location for repairs from another company.  John was friendly and prompt.  I would definitely recommend him for any heat or AC issues!

  JNT was fantastic! We have used them multiple times. John was very easy to work with, communicated with me on the issues and did exactly what he stated he would do. I would highly recommend John for your HVAC needs. -Jason A.

  After having 2 other companies come out and quote me $600-$900 for parts & labor, I decided to get a 3rd opinion. Peter came by and was able to get my furnace running in no time. He diagnosed the issue, fixed it and didn't try to sell me stuff I don't need. I plan to use JNT again for AC tune up.

  I appreciated John's immediate response even though it was 1:30am. He made arrangements for immediate service of my AC unit. Great service!

  We love Johnny!!! My fiancé and I just bought a house and you can say it's quite the fixer upper. When we moved in, one of the first things on our too doo list was temperature control. A childhood friend recommended JNT. We called and scheduled a appointment, Johnny came and literally fixed everything in a day! Our furnace was leaking from the PVC outlet from a bad install job and it was dripping onto the electric box where the on/off switch is located. Johnny replaced and fixed the PVC, swapped out the electrical box because it started to rust, tuned up the furnace, checked the whole system for leaks and efficiency, and then recommended and installed an Ecobee 4. Everything was done smoothly and quickly. And I'm soo happy he recommended going with the Ecobee 4 rather than the nest for more compatibility. Johnny was very knowledgeable and took the time to explain what was going right and what was going wrong and I truly appreciate that. He has certainly become my go to guy for almost everything electrical and HVAC related. Thank you Johnny!!

  Very satisfied with their service.  Technician came out, was thorough and didn't spend the entire visit trying to up-sell me.  He gave me some recommendations along with some things to keep an eye one, but didn't try to push a new unit down my throat.  I had my AC Unit, Furnace, Hot water heater and Sump Pumps serviced and I also had a Smart Thermostat (Ecobee3) installed.

  John was terrific. Responded quickly and replaced my water heater. Very fast service, great products.
Would absolutely recommend and use again.
Tom W.

  We called a bunch of companies to come fix our heat on one of the coldest nights, and John at JNT was the only one who answered on the first ring. He sent out a technician named Peter who arrived on time. He quickly found the problem and just so happened to have the part on his truck which was a big relief. He even wore shoe covers as to not track snow into the house which my mom was thrilled about! We will definitely use them again for any future problems.

  I'm 9 months over due in writing this review.  I found JNT through Yelp and decided to contact them because of all the positive reviews others had posted.  I'm a naturally skeptical person when ALL the reviews are 5 stars, but after working with John, I can say that all the reviews are well deserved.

I had sent him an e-mail through Yelp on a Sunday about installing 3 ceiling fixtures.  Because it was Sunday, I didn't expect to get a response that day, but I got one within an hour.  After exchanging a few messages, we set up an appt for John to come to my house to do the install.  

On the day of the appt, John was running late and contacted me proactively to let me know about the delay and asked if I wanted to wait or reschedule.  I really wanted to get these lights done, so I said that I would wait.  He and a young man (sorry, but I've now forgotten his name) came around 8PM and installed 3 somewhat complicated fixtures.  It took them about an hour to get all 3 done.  I'm sure they had a very long day by the time they got to my place, yet they were extremely upbeat, courteous, & conscientious.  Their work was impeccable and almost a year later, I'm still enjoying my fixtures.  

I would highly recommend JNT (John) if you have a need.  He's prompt, professional, & I felt what he quoted me as very fair and reasonable.