Reviews of local pros in Winthrop, Massachusetts

Mike and his team are very responsive and do a very thorough job. They are courteous and have done excellent work on numerous jobs! I would recommend him for excellent quality work!!

They were able to do two jobs for me. One to fix my dishwasher and kitchen sink and the other to replace an old toilet.

They are very quick, experienced, professional, on time, and very knowledgeable.

Great service - right on time, fixed the garbage disposal quick and was really friendly. Will definitely call again

Had Black Diamond out for a water heater replacement. Prompt, professional and kind! Kept the work area so clean you wouldn't know they had been there. Also advised on draft issues so we could get that fixed and stay safe. Above and beyond!

Mike was great. He came out on a Saturday and replaced our broken and leaking hot water tank. It was a huge relief for us. He was very nice and helpful! For any future work I will be teaching out to him.

Mike did an excellent job with a leaking drain pipe in my basement. Came to the site quickly and talked thru the job with detailed picture and video while I was away at work. He even found a second leak in the same pipe I had not noticed.

Mike and his team are very professional, quick, and get the job done! He has fixed our furnace, moved our radiator, removed pipes, and will be replacing our hot water tank to “tankless” in the future. The best part about Mike’s company is that he is an open line of communication and works with people to keep fixes reasonable and gives you options. I will be using Mike for all of our future pluming needs, including bathroom and kitchen renovations. Thanks Mike for all you do!

Black diamond plumbing made an emergency call when my pipe burst. Michael was fast and efficient. He made my emergency a top priority. I recently used black diamond plumbing again to install my new gas stove! You won’t find a more skilled plumber than this guy. 100 percent recommend!

I highly recommend Mike, Black Diamond Plumbing. I called, didn’t need to leave a message. He answered and scheduled me for the next morning ( I had no heat in some of my rooms). He arrived at his scheduled time. Figured out the issue. Fixed it the same day. Quick,
painless, and efficient. I’d definitely call him again.

Black Diamond Plumbing’s replacement of our boiler was remarkable… quick, professional, knowledgeable, skillful. Most importantly, with a patient willingness to explain each step of the process. We are beyond satisfied. The boiler and the artistry of the installation are now permanent parts of the house-tour that every visitor will be subject to. You have to ask him for photos if you are considering a boiler replacement. John & Eloise Riley

worked knowledgeably explaining each step in replacing our furnace.

I had a leak in my house I recently moved into. I called Black Diamond, Mike picked up the phone and scheduled a visit to my home the very next morning. He and his team made me a priority and managed to fit me in right away despite their busy schedule. On top of it they’re phenomenal at what they do. I would recommend them to anybody for your plumbing needs!! Thanks again to Mike and Dave!

Highly recommend Mike and Black Diamond Plumbing & Heating! They have been a pleasure to work with - responsive, professional and quick to identify and solve the problem. We have used them for both heating and plumbing related issues, and the work is always done with care and craftsmanship. We recommend without hesitation!

I have a fairly new water boiler ( aka Oil Furnace) it was leaking water every time the boiler would shut down. I called Black Diamond Plumbing. Michael and his team arrived as scheduled and professionally fixed everything! His team is very informative in regards to my water boiler repair. They were fast and efficient with service. Professional and knowledgeable! Thank you Michael & Black Diamond Plumbing & Heating

I highly recommend Black Diamond! I had them run a natural gas line on my roof deck. The team did a great job and were easy to work with. Very flexible with scheduling and the quality of work was top notch.

Can’t recommend enough! Mike came same day to fix a gas leak in my stove. He and his partner Dave were professional, responsive, and kind. They were a joy to work with and made the whole process stress-free. If I could give more stars I would! Highly recommend.

I have baby twins at home and our household hot water valve kicked the bucket. I called it in and within 2 hours had Dave here. Very knowledgeable and professional, had the job done in under 10 minutes and was out. I plan on using Black Diamond for all my plumbing needs going forward.

After my 25 year old heating system started spewing CO at the beginning of April, I got 3 quotes from different vendors, and Black Diamond Plumbing and Heating was the best by far.

They put in a brand new high efficiency boiler, and I couldn't be happier with the results!

Mike and his team obviously take pride in their work and craftsmanship. They were prompt, respectful, and left everything nice and clean.

I highly recommend this company for any plumbing and heating needs.

I highly recommend Black Diamond!
Mike is very responsive and fair with pricing. I have had annual furnace maintenance done twice now with this company and they are always prompt and efficient. My furnace is old and Mike and Dave took good care of it, and left the work area cleaner than they found it.
I really appreciate working with a small local company who is flexible and honest with services.

We called Black Diamond Plumbing to help with our basement renovation. Mike and Dave replaced an old sink in our basement with a beautiful stainless steel sink and they fixed an old broken vent pipe. They also added a new dedicated laundry drain which works great! (our old washer would drain into sink!). They were quick, knowledgeable and professional! We will use again for any plumbing issues.

Black diamond has handled everything from emergency response to brand new fixtures for us. Mike and his crew are professionals that take their trade seriously. Pricing is very fair and Mike takes the time to explain every aspect of the project.

As much as we try to plan things in life, we can’t. Like when your boiler decides to give out during the coldest weekend of the year in the middle of the night ☠️. Thank god for people like Mike and companies like Black diamond. They were professional, reliable and most important trustworthy. Huge thanks to Mike and the team for getting my heat back up and running , no matter the hour !