Reviews of local pros in Danvers, Massachusetts

Great work. Knowledgeable, reasonably priced. Definitely recommend.

Does some of the best work around. Also steam boilers is his specialty

I would definitely recommend checking on Ed's availability ASAP. Excellent, professional work.

Excellent work and service. Professional, responsive. Ed installed new furnace and central a/c.

Ed has saved us multiple times over the last 8 years. Whether it's heating failing on a cold night or the AC stopping during a heat wave, he's been prompt and efficient. He is genuinely one of the most professional and knowledgeable contractors I've ever hired. This is whom you should call for HVAC work in the North Shore.

We called A&M Services for the first time during the hottest week in June 2025 because we were having issues with the central AC system. Ed responded by phone within 10 minutes and arrived at my home within an hour. Then within a very short period he was able to correct the problem, test the air temperature and determined that the system was operating properly. He asked me to call him the next day to confirm that all was ok, which i did. His fee was fair and his service was excellent. Very knowledgable and professional. Needless to say Ed has a new loyal customer. Thank You Ed for the great service.

Great experience with Black Onyx. Professional, responsive, and reliable. They show up on time, communicate well, and get the job done right. Highly recommend

Great company, with a great group of talented guys. They get repairs completed with no call backs. What more can you ask for. Greatly appreciate your service, thanks to everyone at Black Onyx

I am a property manager of a multifamily property and we use Black Onyx. Their customer service is top tier. They respond quickly and their techs are always professional and friendly. They get the job done right.

I work in property management and Black Onyx is our go-to preferred vendor for water heater and plumbing service. Junior and his team are knowledgeable, always quick to respond, and provide great service!

They done excellent work and have the man power to cover multiple properties. Good moods and friendly!

Black Onyx was a life saver! I had an emergency at my business and could not operate fully. Not only did they get me up and running same day the price was very reasonable. Thank you to the whole team!

My water heater let go in the early morning and they were at my house within an hour, had the new tank installed , cleaned up and the old one loaded on the truck and on their way to the next stop in another hour, fast easy and professional techs

Exceptional service. They can do anything.

Mario came to repair our AC late tonight and was incredible. He was running around, working really hard, and very communicative. A+ for Mario!!!

I’ve been using this H. V. A. C. & Plumbing vendor at both the properties totaling 600+ luxury apartments that I manage the facilities department they handle all of our regular and after hour emergency services. The staff is responsive, knowledgeable, and extremely reliable thank you! Igor, Eddy & Junior and all of their hardworking team. Bravo

Black Onyx Group handled pluming install at our pool house last summer. The team expertly handled all plumbing for our pool house, including a full kitchen, bathroom, and gas line setup—professional, efficient, and detail-oriented every step of the way! Highly Recommend!

I called Black Onyx when my furnace decided it was done with winter and quit on the coldest night of the year. At first, I tried the classic homeowner fix—aggressively pushing buttons and whispering threats—but that didn’t work. So, I called the professionals.

Igor showed up faster than I expected, looking like a man who had seen it all: confused thermostats, rebellious AC units, and desperate homeowners in seven layers of clothing. He took one look at my furnace, gave a knowing sigh, and got to work like a doctor performing emergency surgery.

In less than an hour, my house went from “Arctic tundra” to “cozy ski lodge.” Igor even took the time to explain what went wrong, though I mostly just nodded while being distracted by the warmth returning to my fingers.

Would I recommend Black Onyx? Absolutely. Will I ever take my heating system for granted again? Not a chance. Thanks for saving me from having to wear a parka indoors!

⭐⭐⭐⭐⭐

Black Onyx Group delivers top-notch HVAC and plumbing services with professionalism and efficiency. Their team is highly skilled, reliable, and dedicated to quality work. Exceptional service from start to finish—highly recommended!

I am a service manager for 2 mid-rise apartment buildings on the South Shore. We had a dire need to upgrade our tankless water heaters. Black Onyx stepped right in to fill the need all while keeping pricing to budget needs. Their service exceeded expectation. Not only are they expedient with full replacements but just as efficient for any repair big or small related to plumbing and HVAC. The Black onyx team from the office to service staff are personable and professional from start to finish. I cant count how many times the residents applauded the efforts the team takes in ensuring the work areas are cleaner than when they started. Would recommend this company to anyone who has a gap to fill you won’t regret it!

I use Black Onyx for all our plumbing projects. Their attention to detail and experise throughout every phase of projects set them apart from others. Their commitment to quality and dependability initially caught my attention and has kept my business since. It's a pleasure to manage projects with such true professionals. I rarely leave reviews, but I felt inspired to share my positive experience, as they consistently go above and beyond, treating every project as if it were their own.