Cotti-Johnson

A M.

We hired Cotti Johnson to install a Mitsubishi mini split. We pay a monthly fee for inspection of our heating system (gas), mini split and electrical panel. Dwayne came on time with a call 30 minutes away. Smart, personable & friendly. All of my interactions with Cotti Johnson staff are super! Highly recommend!

Dana H.

Customer service is superb! They respond quickly to all of my requests from hanging a chandelier to updating our amps from 100 to 200. They are my go to for everything - HVAC, electrical, and plumbing. The technicians are knowledgable, efficient, and highly skilled. I am so happy we found Cotti-Johnson when we first moved to the Cape and needed work done on our home.

Isabelle W.

200 amp panel upgrade. Scheduled in January for an April install. Service was performed on time. Electricians, Stephan and Ashlee, called before arrival, arrived on-time, worked efficiently, cleaned up after completion and explained work done and function of the electrical panel installed.

Couldn't have asked for better service. Highly recommend Cotti-Johnson.

Roberto M.

Cotti-Johnson has installed and been maintaining my home HVAC system and furnace for the past 5 years. Each year they come to service my furnace in the winter and A/C unit in the summer. All of their service techs are always friendly, professional, and skilled. I would highly recommend them.

Michael S. T.

I needed my whole house generator serviced and from the first contact they were extremely responsive and professional. They quoted me a cost before they came and the electrician arrived on time and they called ahead to confim. The work was done thoroughly and I appreciated the report on the condition of the unit. I especially like their customer contact via text and every call was returned promptly. I had a great experience with them.

Arif T.

DO NOT HIRE FOR HVAC.
Cotti Johnson has been the single worst contractor I have ever dealt with to date. If you have a simple HVAC repair, they may be able to do it but it's a gamble. If you have a large HVAC related work to be done, do yourself a favor and hire actually competent companies.

Where to start...
I hired Cotti-Johnson to replace my old oil boiler with a modern heat pump system as the main source of heat for my house. Thomas Kelly, who was the initial person that came and made recommendations on the replacement system, should not be in the business of recommending heating systems to people.

First of all, there's no heat load calculation of any kind, which is the first red flag but I didn't know any better at the time. I thought trusting this expert would be enough. They simply guess based on the size of the house without knowing a single thing about insulation or any other factor.

Second mistake was recommending a single indoor head for an entire first floor that's separated by stairs in the middle of it. My initial concern with this was dismissed by Thomas and I simply went along with it, again trusting the ""expert"".
Unfortunately, we're now stuck in a position where we can not remove the old boiler because the new system simply can not heat our first floor evenly. We have hot side and cold side and unfortunately our dining room is now permanently cold.

Third mistake was installation. It took weeks to convince Cotti-Johnson and countless ignored calls and emails to get them to fix a mistake they made with the original install. Even then, they had to make multiple trips to finally realize they didn't account for line lengths accurately and undercharged the system. They simply did not know how to deal with Mitsubishi multi-headed systems. I had to ask for proof of exactly how much refrigerant was being added in order for them finally do a proper calculation and add correct amount of refrigerant. Hire a diamond certified contractor if you want a Mitsubishi system and do not want to deal with these kind of amateur mistakes.
Even after they finally did charge it to seemingly proper levels, they left bunch of screws and brass refrigerant line connectors/caps behind. It's amateur careless work all around and any trust I've had with them has now been lost so it's hard to actually trust anything they've done.

To add more insult to injury, I have been trying to get in touch with Cotti-Johnson for over 3 months for correcting inspection results and so far all of my emails have been ignored.

Deborah B.

We were fortunate enough to have had our realtor suggest we use Cotti- Johnson install a boiler and hot water tank. We have a 100 year old home and you never know what you will find.
Complications arose but they did an amazing job. Every tech they sent to our home were friendly, skilled and got the job done right. They could not have been any better. We received a picture of the tech and some background to insure that they were professional and knowledgeable. We always felt were in good hands.
I will be sure to refer them to others and I am grateful for everything they did to improve our home.

Joanne P.

I would not recommend or ever use this company again. My experience was not a good one. I had no heat on a particularly cold night and l called their 24 hour emergency number and was told the charge would be $189 to come out and address the issue. I thought the price was steep but agreed to it because it was pretty darn cold in my house. The tech came to my home that evening and was there maybe an hour and a half and told me there was a wiring issue. Never had an issue with the wiring before but okay. He went out and got some wire and used that to repair what the problem was. The boiler fired up and appeared to be working. I was then asked to sign multiple blank screens on their hand held computer system as receipt of work done. I had no idea what I was signing as the screen was blank! The tech then told me that charge for the repair was an additional $231.00 for labor and repair. Again, I thought the price was high but I was happy to have the system up and running. When I asked for a receipt I was told it would come to me on my email. I was told my boiler was old which I knew and the technician suggested I schedule an appointment for someone to give me a price quote on a new boiler and I agreed to this. Well less than 45 minutes after the tech left the system shut down and stopped working again. I called the emergency number again to let them know and the answering service took all of my information and said they would pass this on. I was expecting at least a call back. Nothing... So I was no better off than I was before I called but now just out $420.00. I received a message the next day from someone wanting to schedule a time to come out and give a price for a new boiler. No mention of my call back to them regarding the issue at hand.
I called the office later that day to voice my dissatisfaction of the repair, or lack of, and no return call and was told the person I would need to speak to was on vacation so wouldn't get back to me for a week. I explained the situation to the woman who answered the phone and asked for my receipt which was not sent as promised. I did later that afternoon get a call back from someone . He asked what I was looking for them to do and I said - can you get someone back to look at this since I paid for the service and it was supposedly fixed for 45 minutes (enough time to get paid and leave) and then stopped working. He said basically there is nothing more they could do and I need a new boiler. I would never recommend this company and told them no thank you on for any pricing on a new boiler. Wouldn't do business with them ever again.

Leon P.

I see all the great reviews but this company is not a good choice. I contacted Cotti-Johnson to repair plumbing work that was not completed but still changed. Moreover, things that was not in issue before now is. The company put a chimney (flute) in and attached it to a broken boiler, while placing the piping next to the wood beams which would have caused a fire if the boiler (heat) was working, the house would have caught on fire and/or burned down. In addition, Cotti-Johnson did not do any fire blocking while putting in the chimney and left the old chimney (flute) so I have two chimneys on my house. I tried contacting Cotti-Johnson to resolve the issues but there was no response but with them emailing another customer's documents and invoice, in which I did pay the down payment for the work but wanting to correct the problems before completion. Needless to say, I had to find a new plumbing company to fix what to correct the problems in which is ongoing. I also, was overcharged. As a customer I expect to and wished things were completed with quality. I usually always try to give good reviews, but in this case, it is sad to say this is different.

Jillian Z.

I would absolutely NOT recommend this company. I recently reached out thinking it was Superior Heating which unbeknownst to me had merged with Cotti-Johnson. Our heat kept turning on but wouldn't stay on. An issue we had previously. They came and 'fixed' it in less than an hour $210. Later that evening, I returned home and my heat would not turn on at all. Now it's 11pm, it's cold and I had three kids sleeping. I called and they wanted another $189 just to come out. After some debate we decided to have them come back out. Took over an hour to get there. Now it's about 1AM and the technician could not figure out the problem. So he 'guessed' we needed a new thermostat. Apparently there were melted wires. Great do you have one? Yes, it will be $500 to install (thermostat is $42 online). We decided against it as it was a week from Xmas and it was $500+$189 for coming out. We ordered a thermostat and had my brother who is an electrician come over. He said there were no melted wires but replaced the unit in 20 minutes as a precautionary measure. That company should be ashamed of themselves for guessing at problems, charging ridiculous amounts and not even guaranteeing their work. My only positive are the two people who showed up were very nice.