Reviews of local pros in Hooksett, New Hampshire

I’m writing to very strongly recommend Nadeau Mechanical and its owner, Andre. This is based on the work they recently did in updating our 25-year-old HVAC system. Andre was originally recommended to me word-of-mouth by the head of a well-regarded contracting company that does a good deal of restoration (our home dates from the mid-1800s). His description included things like “smart, energetic, easy to communicate with, does good work”. That’s been completely confirmed by my recent experience with Nadeau in replacing two aged A/C condensing units with heat pumps, removing and replacing the two corresponding air handlers, and adding controls to make these play nicely with a new natural gas boiler being installed as backup. The price was quite competitive compared with the other quotes we initially got. It struck a good balance between replacing worn out mechanicals and keeping newer ones that didn’t need to go. Installation quality appears to me excellent. Nadeau managed both technical issues and an extensive bag of unanticipated new local permitting rules without the project falling behind in schedule. While they are based in NH, they do a fair amount of work much nearer Boston and this has proved in no way a problem. Overall, a very positive experience.

Nadeau Mechanical is well represented by Andre and Joe. We contracted for an extensive HVAC for a basement using the existing main floor system. The estimate was detailed and a date set.
Andre and Joe arrived on time with all the required duct components and new thermostats. The project was completed in four days without any issues.
Excellent work at a fair, negotiated price.
Highly recommended.

I was referred to Nadeau Mechanical by a friend. Andre, the owner, is incredibly knowledgeable about HVAC. I put an addition on my house and wanted to upgrade my old oil burner system to a gas forced hot air heat/ac system. I had a local company come by and they said that it wasn’t possible to run new duct work to the second floor because of the open concept cathedral ceiling design. Andre came out and took a look and said he could do it. Him and his crew are true professionals. They did an amazing job and we couldn’t be happier.

Andre was excellent all the way around. Contractors who answer the phone and show up promptly means a lot these days. I highly recommend Nadeau Mechanical for your projects!
Andre did some gas supply line changes. I needed two boilers disconnected. And the HW tank reconnected. His pricing was very reasonable. Boiler pictures to show what needs to go away. The 2 pipe steam system is prehistoric.

I recently had all the plumbing in my house replaced and a new filtration system installed by Colonial, and I couldn’t be more impressed. From start to finish, the entire process was handled with professionalism and attention to detail.

The team arrived on time, worked efficiently, and made sure everything was installed perfectly. They even took the time to explain how the new filtration system works and ensured I understood all the features. The quality of the water is incredible—crystal clear and so much better than before.

What really stood out was their dedication to customer satisfaction. They were friendly, respectful, and left everything spotless when they finished. It’s not every day you find a company that combines excellent craftsmanship with top-notch service, but Colonial absolutely delivered.

I highly recommend Colonial to anyone looking for reliable plumbing services. Their expertise and commitment to quality make them a standout choice.

I have been working with Don for years now. He and his team are the best I have ever worked with. He gives great advice, provides a solid understanding of the equipment what is wrong and what you can do to prevent problems in the future. He and Sam are conscientious and respond quickly. He has rescued us through several furnace and A/C issues and plumbing issues and sink tap installs. I highly recommend them to anyone I talk with.

The team is knowledgeable and experienced, but also excellent at communicating and problem solving. We will be recommending Colonial to all of our friends and family. Special thanks to Samuel for his positive attitude and keen eye. Keep up the good work! Thanks!

We have been using Don's company for over 15 years. They are the best and also the nicest people. My wife and I trust them so VERY much. Don and Sam are so knowledgeable and have responded quickly to several emergencies over the years. We feel so fortunate to have found them. One potential headache out of the way because we never have to worry about our plumbing, heating and air conditioning. I highly recommend. They are truly the best. I cannot say enough great things about them. Joseph Anderson, Merrimack, NH.

Don and his team are reliable and provide excellent customer service. We’ve been customers for over 12 years. They’ve helped with difficult to solve water filtration problems, helped us install a new shower and provide our annual heating and plumbing services. Thank you to Colonial Plumbing and Heating!

Attentive, professional, timely and honest. I will only be working with them for our household plumbing from now on. Thank you Sam and Ethan for providing great and friendly service!

Efficiency was top notch, super clean during and after, extremely polite and respectful and Don, the owner was more than accommodating with scheduling. Would highly recommend!!

I can’t say enough good things about Colonial Plumbing & Heating. Their team showed remarkable patience and professionalism while completing plumbing repairs for my elderly mom. They arrived exactly when promised, carefully inspected the issues, and clearly explained the scope of work and aligned on costs before getting started.

What impressed me most was their willingness to go the extra mile — they extended their visit to investigate a frozen outdoor faucet and provided a thoughtful evaluation for replacement. When the job was done, the space was left clean, tidy, and completely dry. Their workmanship and courtesy were exceptional.

This company truly exceeded all expectations.

Thank you Donald and Team!

My Water Heater broke and flooded my basement late last night. They answered all my questions and got me on the schedule this morning. By the time I picked up my kids from school we had a new water heater and the old one was gone! Phin and Mason were the plumbers who did the work. They were respectful and put in extra effort to get the water heaters up and down our narrow staircase to the basement. A very positive experience.

I had a new hot water heater put in and the old one hauled. Mason and George were the plumbers that installed it the next day. Very professional and courteous. New hot water installed and old one hauled away. 5 star service I would highly recommend.

Mike from Denommee was professional, and explained what need to be done and replaced and carted away new gas water heater.
Mason, assistant from Lowe’s, was efficient and tidy. Very pleased with the experience.

Mason and George were very professional. They were on time and did a very professional and complete installation. They explained their work before they left and certainly represented the company very well. Good job. In addition, John, in the office, in sales, did a great job getting the contract completed and scheduling the work very quickly. Thanks to all.

It’s was an absolute pleasure to have Mason & George install our water heater. Such nice guys! They were efficient, courteous, respectful of our home, funny, and informative. I am very grateful for their service. I will certainly be co tasting this company Denommee again for plumbing needs.

I am very happy with Denommee !

I had a new hot water tank replaced.

George and Mason were excellent. Very professional and courteous. Work completed efficiently including having electrician come in for wiring up to code.

I received a quote for double what Denommee quoted so am glad I went with this company and will recommend to others in my complex.

The initial communication with office was great as well.

Thanks to all at Denommee !

Larry Allen

Denommee came to fix a leak in between the walls between my condo and another unit. John was prompt, knowledgeable, and friendly. He explained every step of the process and did a thorough, fast and fantastic job! I will call Denomme for all of my plumbing needs In the future! Fantastic service!

Mike R and Mason did an amazing job! The job was scheduled for 12/13/24. They were on time. They both were courteous and knowledgeable, and told us exactly what they were going to do. They completed the job with no issues, they were kind, efficient and very clean. We will be hiring them again and will spread the word to our family and friends. Thank you guys so much! Job well done!!! 5 ⭐️ ⭐️⭐️⭐️⭐️

Wonderful staff! Professional, trustworthy! We've had faucets and pipes replaced and use Jeff Daigle for our yearly plumbing and heating maintenance. Jeff Daigle and his crew have always been able to answer our questions, provide advice and fix our plumbing and heating issues. They are prompt, thorough and their workmanship and followup is impeccable! We are so pleased to have a local company we love and trust!