HVAC reviews in Holliston, Massachusetts

Nicholson did a great job! I highly recommend them. Great customer service, very knowledgeable, fair prices and they went above my expectations. I will definitely be calling them again. Thank you so much!

We had an excellent experience with Mike from Nicholson today. We are new homeowners, and Mike was thorough, friendly, honest, and educational with us about our HVAC system. We had limited knowledge of a major system in our home, but now we feel confident in our basic understanding of it and what to expect moving forward.

I had been a client of Nicholson for a long time. They used to be very good, but not anymore. When my heating failed during the winter and parts were backordered, they couldn’t give any timeline for availability. After 11 days without heat, I had to switch to another company, which fixed the issue quickly.

Booking appointment online was easy and straightforward, and I was able to select the time frame I wanted 2 days before. I got heads up by text and email before technician came out which also told me which technician was assigned to the job. Jimmy and Mike did a wonderful job replacing the leaking water pipe in the basement. The root cause, procedure, pricing, warranty and other recommendations were clearly explained and communicated. Jimmy and Mike are friendly and professional. The overall process was transparent and easy. Will definitely work again with Nicholson!

Our first floor heat stopped working on New Years Eve. I guess it was 2025's last kick. Tyler Torres was very professional and was very efficient with time. He quickly diagnosed the issue, gave us a quote, and fixed it. I appreciated his willingness to be up front and never felt like we were being upsold. He answered every question and he was also very personable which made the pain of having to fix something people tend to dredd paying for a little less painful. Good experience overall for the untimely predicament we were in.

My heat stopped working and someone came out to fix it within a few hours of me calling. Luis was absolutely amazing and fixed the problem quickly. He was very friendly and knowledgeable. I highly recommend Nicholson and Luis.

Mike Adams from Nicholson did my HVAC annual maintenance checkup today , he was on time and very thorough , going above and beyond by cleaning /replacing any and all filters that had dust. He isolated root cause problems for both furnaces and gave clear/concise explanations and options for repair and /or replacements including with pictures and demos , with no pressure tactics. I would recommend Nicholson and Mike to others. Thanks for your help!

Great service!
My appointment was with Mike Adams, and he was fantastic : clear in his communication, meticulous in his work, and took the time to explain through the process. He even shared helpful maintenance tips to keep things running smoothly.
Highly recommended!

Beyond frustrating. We called Nicholson for an issue with our heating system that they installed, throwing out codes on our thermostat for high heat warnings. They came out right away, which was appreciated, and met with my wife. When they got here, Eversource had shown up unexpectedly a little before them to move our gas meter and had shut off our gas. Unfortunately, Nicholson wasn't able to test anything on the furnace, but said they would do a quick inspection. Without any testing, the tech "guessed" on what needed to be done to fix our unit, based on the codes that the thermostat was showing. The tech put together 4-5 different repairs, ranging from $2,300 to replace a faulty gas value and high limit switch, to $15,000+ to replace the entire unit. Mind you, Nicholson installed this furnace a few years earlier - why would a new system be required??? The tech basically scared my wife into doing one of the options, saying that if we kept running the system, it would do permanent damage and would end up costing a lot more. So she signed paperwork, along with their recommended service agreement for the year so they could get the parts ordered right away so they could get back to do the repairs. This all happened right before Thanksgiving.

Nothing sounded right to me when I got home that evening. I read the paperwork and saw that the Tech did not do any testing and just based it on the codes. After some research on my end, things did not sit right. The codes suggested it could be what they recommend, but there were a bunch of other things it could be. When I looked at the options they put together, their work was way over-priced for the simpler tasks and the options for some of the other work just did not make sense. The next day I called Nicholson and told them to pause the work order pending a 2nd opinion on our end, voicing my concern that a tech should not push having thousands of dollars of work done without even testing a system. At the very least, the tech should have made the recommendation that he thought and then suggest they come back out when the gas was back on so they could confirm. The gas was back on within 10 minutes of them leaving (and they were not there very long).

I ended up getting an informal opinion from a friend and then had a second company come in to give their professional opinion. The 2nd company determined that the gas pressure was running really high on the gas valve and just needed to be adjusted. They came in cleaned up the entire unit, adjusted the pressure, and did an overall inspection of the system. Upon their inspection, they also noticed that the gas flue pipe exhausting to the exterior had come apart. The gas was exhausting into our basement - essentially dumping CO2 into our house. The Nicholson tech, doing their inspection, never picked this up. And they were the ones who installed the pipe to begin with. What did they even inspect???

After the 2nd company finished their work, I showed them the options that Nicholson put together and they basically laughed and could not believe it. They said they see that all the time. What Nicholson said would be thousands of dollars worth of needed repairs (or even a new system), ended up being a quick service adjustment. They saved me thousands!!!

This has caused me to lose all faith in Nicholson and will not be using them in the future. Not only were they negligent on the repairs without doing any testing, their "inspection" of their installed equipment rendered no feedback on a pipe that was leaking carbon monoxide into our house. The other company was a life saver, figurative and literally.

The HVAC technician, Jarek, who came to look at my broken whole-home humidifier was awesome. He took the time to walk me through and explain everything in great detail, patiently answered all of my questions, and left me with a much better understanding of how the system worked and what it would need. Super helpful, professional, friendly.

Luis was professional courteous and troubleshot our issue with our central heating quickly and efficiently. We had a new heating installation last week, which was brilliant but two of the rooms had no heat. He found the culprit in the basement- air trapped in a pipe. In addition to fixing the problem, he shared suggestions for improving the insulation and heating of our antique home. We are very pleased!

Sadly, we just experienced yet another botched job by Nicholson. Our furnace went out on Friday, and called Nicholson to get someone out to see what the problem was. They could only send someone out the following day (Saturday) so we were without heat on a pretty cold night. The technician took a look at the furnace, only to conclude that our power board was "fried" and our options were (1) replace it for just over $1000 (with a quick search, the actual cost of the board is between $200-$300...) or (2) replace the furnace. Granted, our furnace has been past it's life expectancy, so this was perhaps not a huge surprise. We went ahead and had them come get us a quote for a new furnace, but they could not come out until Monday, so we were 4 days without heat at this point! Got a quote for the new furnace ($14K!!) which they could install the following week (NOTE - this would now be 11 days without heat!!!! Their lack of urgency to restore heat during the winter in New England is ridiculous!). Doing our diligence, we contacted some other companies to give us quotes for a new furnace, and the first one to come out looked at the furnace, did some quick diagnostics, and found that the problem was a LOOSE WIRE!!! The power board was completely fine, he tightened the wire, and we were back up and running with heat in a matter of minutes and no charge for the fixed wire!!! Thanks to Nicholson's poor service, we were out of heat for 5 days, all due to a missed loose wire. I wish this was the first time we had problems with Nicholson, but this is the last straw. Goodbye, Nicholson, we wish your remaining customers better luck than we had!

The entire experience from my first phone call to the final installment of a new furnace was wonderful. The entire team was in contact with me on a regular basis and they were polite and professional. They all were a pleasure to deal with.
Thank you for making a difficult experience as pleasant as it possibly could be!

The plumbing technician Breno exceeded my expectations with his professionalism. I had a leaky faucet which ultimately needed to be replaced due to the model being discontinued and no replacement parts available, as well as a couple other plumbing issues. Breno went over all of my options, answered all of my questions, and helped me resolve my issues in the most cost effective way. Highly recommend this company.

Great and prompt service! I was able to get an appointment with 24 hours. The technician, Ollie, was kind, patient, and explained all my options clearly. He even contacted the manufacturer of my water heater to help fix my issue. I will be using Nicholson from now on for my plumbing needs.

Technician Will Richard did an outstanding job diagnosing the problem with our combi boiler and making recommendations and suggestions. He went above and beyond to ensure our home would be comfortable and warm. An outstanding employee!

Dan Harding quickly figured out our plumbing problem and was so helpful educating me on my plumbing and heating systems. He also was so tactful, sweet, knowledgeable and communicative. Boot covers on when he entered the house! And he is great with dogs!

Shane was friendly, on time, very thorough, and listened to my questions.
I was looking for a solution to filter the hard water coming into the house. Shane explained in detail the different options.
He also fixed an issue with our toilet and cleaned up the bathroom after the repair.
I also got his suggestions about putting my washer in the garage.
There was no pressure to do any of the jobs.
He did a great job!!
Thank you

I hope the company understands how much of an asset Luis is. He is the best technician to ever walk into my house period he was very respectful very neat and explain to me what the problem was and how I can fix it as soon as possible period he had the parts in the truck and fixed everything within the hour. He also changed the filter for me while he was here and took a look at some other things and gave me recommendations on how to keep my system up and running for longer. I used to manage a company, and if I had an employee like Lewis working for me, I could only imagine how much business I would get.He is 5 🌟.

Very happy with the installation of my hot water tank. The two techs, Oliver and El were friendly, courteous and mindful of my carpets and walls as they brought the old tank in and new one out.

Yansmith (“Yan”) Poindujour was our Nicholson technician who was sent to restore our heat on a very cold Saturday before Christmas.
He was amazing! He was kind, pleasant & KNOWLEDGEABLE. He checked-out our entire heating system AND its electrical supply.
Our heat has now been restored and we’ve started a contract with Nicholson.