
Electrical repair and troubleshooting, 10+ years of electrical experience, Electrical repair and troubleshooting , and 3 more
"Ryan did excellent work. He explained everything so I could understand it. In just a few hours he rewired my electric heating system in my duplex. For the first time since I moved here (14 months) my heat is completely off !! I would give him 10 stars if it was possible, but here I would give him 5 stars."
Thomas M. in January 2024

Electrical
"Received a call first thing after my request. Confirmed a time and had the repairs done. Will hire again! Thx is Chris and Joe!"
Daniel N. in November 2018

Air conditioning repair and replacement, Boiler repair and replacement, Furnace repair and replacement
"My water heater went out, and they were at my house within ten minutes. They were friendly and tremendously helpful in the repairs and also in answering every question I had. Price was extremely reasonable. Highly recommended!"
Keith K. in February 2019
Plumbing, water heater repairs and replacements, boiler repairs and replacements , and 2 more
"I was is a bad way. A little voice told me to check the cellar and found my hot water heater had kicked the bucket. Water everywhere I plugged in my need on home advisor and wicked plumbing called me immediately. They were at my house within hours and replaced everything. Quick, clean, polite, extremely fair pricing, a pleasure doing business with them. I highly recommend WICKED PLUMBING. GREAT JOB!!"
Catherine R. in August 2019
Repair, Installs, Heating , and 2 more
"The promptness of service was outstanding. The repair was completed in a timely manner. The installers were professional and knowledgeable. Ocean State Mechanical is my company going forward. No one else will do. See you soon for the AC"
CHRISTINE S. in March 2022

Boiler Replacements, Heating Installations, Radiant Floor Heating , and 1 more
"Williams & Associates replaced an ancient, very large old boiler in my very large house. Bruce calculated the necessary size and found a suitable boiler. He and his crew thoroughly cleared the radiators and lines before removing the old boiler and installing the new one. They checked all the radiators and added new valves as needed during a lengthy checkout. It took several days to do all the work. Throughout, Bruce explained what they were doing and why as well as recommending changes/additions to the original proposal. They were even cheerful about removing the original "Mary Jane" from the basement. I would definitely recommend them to anyone using steam heat. Great job!"
Penny H. in December 2018

HVAC
"We had Chris replace a decades-old gas furnace and electric water heater, as well as install central air conditioning. We talked to a few professionals in HVAC, and Chris seemed to have encyclopedic knowledge of it all. At a very fair price, Chris spent two days having the old stuff professionally removed, getting the new stuff (AC) wired up, and all the new equipment installed. This was a problem-free project from start to finish, and we would strongly recommend Chris to anyone with similar needs."
Donald S. in November 2018

In business since 1949
Furnace & Heating Install, Repair, Maintenance, AC Install, HVAC - Cooling & Heating Systems and Mini-Splits , and 7 more
About us: "Gem Plumbing and Heating is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!"
"My central A/C failed during this heat wave. After numerous calls to companies having to leave messages, not answering the phone, having to wait two weeks for service or companies not taking new customers, I finally found Rodney owner of RJP HVAC. He answered the phone himself, and told me he could be at my house in two hours! I received a text when he was on his way and promptly arrived. He quickly diagnosed the problem, explained what he could do to fix it and gave me a price which was surprisingly reasonable. I gave him the go ahead and he fixed the issue within the hour. He is very friendly and professional. I highly recommend him and will call him for all my HVAC needs going forward."
Karen R. in July 2024

Electrical Upgrades, Trouble shooting, Electrical Commercial & Residential , and 2 more
"Couldn't have asked for a better crew for the project. They were great with our son and did a fantastic job!"
C730D7EFE50DDDF404B815B5FE3A8E51669B777C1056FF40BE5F4AE6F294C17E F. in August 2025
Heating Installations, Ductless Mini Splits, AC Instal , and 2 more
"I noticed my hot water heater was leaking so I called Modern Mechanical. They got here the same day, removed my old water heater and installed a new one! They even took the time to show me how to setup the app on my phone so I can monitor it. I truly always receive the best service from Modern Mechanical, never disappointed!"
Danielle D. in January 2024
Water Heaters, Furnace, Plumbing , and 1 more
"I lost a 60 yr old oil boiler and gained a new Burnham gas boiler with a Velocity indirect water heater to replace a gas fired hot water tank. Also lost an oil tank! I’m thrilled!!"
John D. in April 2018
Johnston Heating & Furnace Contractors are rated 4.6 out of 5 based on 591 reviews of 591 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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