I had initially called Mansfield Oil when I ran out of oil... but Keith and Kathy are pure gold. I…read morehave since had them save me thousands of dollars ... I was told by another company I needed another boiler... 7k .... Keith fixed the aquastat and it was perfect all winter. Air conditioner broke, and another company told me new system and he fixed the capacitor and it was a nice chilly ac all over again! I love them!

Great service. My central air conditioner decided to stop working at the beginning of a heat wave…read morethe day before the 4th of July and I tried several companies to come out and fix it. Mansfield was the only one who could come out and fix it on the day it broke. Tech was great and explained what the problem was and had me back up and cool again. Reasonably priced and efficient. Highly recommend!!!

Jason serviced my 22 year old furnace. He was great and explained everything involving the…read moredifferent parts that would most likely need to be replaced within the next year or so. He also gave an estimate for the parts and for a new unit.

I met Jason, after an AC failure on of the hottest days of Summer. Jason contacted me promptly,…read moreprovided all the details and was upfront about everything including his service fees. He was at my place at promised, and got to work. He explained everything as he motored on and worked the problem. He came fully prepared with every possible part monitor upgrade and suggested only what was required. He was very pleasant to work with and was very easy to talk with. I would definitely recommend using Donovan Mechanical and request for Jason if he is available.

turned on ac today for the first time this year and didn't work was 85 in my house…read more the service technician came at 7:10 pm thank god for him very nice very polite and I now have my central air working JN is right on top of the problem great company great customer service Peter Pilla 808 state Road Plymouth MA

Overpriced and incompetent…read more This company has worked on my house 5+ times over the last month, amassing to nearly $10k, and each time they come, a new problem arises, each problem costing more. Most recently, they came to repair a leaking pipe, and left the same day after subsequently cutting/breaking multiple pipes in my basement, leaving our entire home without water. They even assured me before leaving that I would at least have cold water, then were surprised when I showed them they left me without any water at all. They came back only with a quote for whole home repiping, and not even a quote for just fixing the local spot of damage. I have now had three separate plumbing companies inspect and evaluate the situation after this, and all of them are in agreement: 1. JN Service made poor technical decisions in trying to fix the pipes, in addition to the state they left the piping, and separately in the way they installed my water heater. 2. It's concerning that JN Service didn't even provide a quote for fixing the local issue, and only provided a quote for a full-home repiping. The interpretations are ranging from bad-practice, to predatory. 3. The whole-repiping quote from JN Services was severely overpriced, and it was additionally concerning given that the initial quote had no information/line items besides just listing the rooms in my house that would be involved in the repiping. It wasn't until I pressed JN Service, that they gave a quote with more extensive information. All in all, I will never work with this company again. I recommend others never work with them. There are other companies that provide better competency at better prices.

Strongly recommend! Al and his team were a pleasure to deal with from start to finish. Scheduling…read morewas easy because they were very responsive. They send confirmation and follow up emails/texts so you can be prepared and know exactly what is going on. Al did a thorough job while also being kind, honest, and dependable. You'll be glad you hired them.

Pro's: came on time and date scheduled. Did quality work on projects…read more Con's: Expect to pay more than double the going rate for all services. Not honest. He will create more of a problem and fix to get more money for the job. Expect to pay a very high price for any fixes. Very poor value for the money.

This company was a pleasure to work with. Naomi and Romario provided excellent customer service…read more They provide great value and fixed my oil filters, oil pump and noseil.

Lewis Superior responded on very short notice to my plea for dryer duct cleaning. My new super…read moresensitive dryer doesn't work unless the vent is really clean! I asked on a Friday afternoon and they sent a tech at 8am on Saturday. Romario provided great service, was polite and removed his shoes. It was easy to pay with Zelle and I will definitely use them again in 6 months. Very reasonable price too. We're already under contract for our HVAC cleaning but I know they provide the service and I imagine they are as responsible and polite as they were with this.

Great service and great work. He listened to all my concernsand questions. The price was great.read more

Duct Man did a great job. They assessed the problem and found the correct solution very…read moreefficiently, and this was a problem we'd had for 20 years! We're extremely happy with their work, we will use them again, and we give them a strong recommendation.

Dan is great. Extremely knowledgeable and quick to diagnose and fix my issues. Saving his number…read morefor future jobs.

Buying a mini-split system is an incredibly difficult process. The Mass Save rebate system is very…read moredifficult to navigate. I got quotes and presentations from 4 different vendors and the pitch and price was exactly the same - hour long presentation and a $30k cost. However, what each vendor tells you is that IF you qualify a $10k rebate is available and your net cost is $20k. Essentially the rebate is a scam - it just gives contractors the ability to inflate the prices and use the rebate to make the system sound cheaper than it really is. I finally met with McIver and he was able to simplify the entire process. He is not a Mass Save contractor. So he does not work the rebate, just offers a strait-up cost to install the system. When he gave me his quote, I quickly figured out that Dan McIver was an honest man and that the whole Mass Rebate program was a scam. His quote with the similar equipment and the same number of mini-splits was $13,500. I hired him for the job and they started within a week. One of my biggest concerns was esthetics - I was worried about too many refrigeration lines running around the outside of the house. Our house is a rental property in Cape Cod that had a lot of charm to it and we did not want to ruin the integrity of it. Dan came up with a brilliant solution and was able to run most of the lines through the basement to minimize the lines on the outside of the house - we were so pleased with this solution. His team did a fantastic job building out the system - they were clean and finished the project on the timeline he quoted. The work was high quality!! Net is that Dan took a very complicated buying process and made it simple and affordable. He is highly recommended for the quality of his work, pricing and his honest and straightforward approach!