4.5 
1.1k+ *The Angi rating for Boiler Installation companies in North Haven, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
*The HomeAdvisor rating for Boiler Installation companies in North Haven, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
Last update on October 17, 2025
Serving North Haven, CT and surrounding areas
Approved (Corporate)
In business since 1946
Free estimates
Emergency services offered
"Outstanding service and professional installation!!"
+6
Serving North Haven, CT and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"Williams & Associates installed a Buderus oil-fired boiler and stainless-steel chimney liner. Bruce's design was a significant upgrade over my 35-year-old boiler system. He clearly explained the process and installation, and he was receptive to my questions. Bruce is knowledgeable, straightforward, and responsive. The price was very fair, considering the quality of the work and other estimates I had gotten. I would not hesitate to recommend Williams & Associates."
Serving North Haven, CT and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"I always trust Chris as my technician to deliver superb service re: my furnace/boiler, hot water tank, split A/C system, and dehumidifier. It's a pleasure to greet him semi-annually, since he's courteous, pleasant, and professional, and since he answers all my questions re: my heating and cooling systems. I trust this talented tech being inside my home and tuning up all these systems. Kudos to Tyler Heating & A/C for hiring Chris as its employee."
+172
Serving North Haven, CT and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"Mike and His team did a professional job . Mike did a great job of communicating with me through multiple emails until he knew that I was comfortable with the boiler that he installed in my home . This company gave the best prices out of multiple plumbers I was choosing from and their work was completely professional and they had a great attitude when answered one of my many questions with respect . I'm a ver happy customer after choosing their Service."
+4
Serving North Haven, CT and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"Very professional installation. Was done in a timely fashion and the crew was very professional and clean. Huge difference in the comfort of our home now."
Serving North Haven, CT and surrounding areas
Approved
In business since 1938
Free estimates
Emergency services offered
"Matt and his team did a fabulous job replacing and installing our oil furnace. He also helped with other issues that we were having with our heating and cooling system for years. Very conscientious, courteous and keeps a the place clean,"
+1
Serving North Haven, CT and surrounding areas
Approved
In business since 2018
Free estimates
Small jobs welcome
"I chose them to put new central air in my home one year ago and I was impressed with the way they conducted themselves so now they are my go to for Boiler repair also."
+27
Serving North Haven, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Emergency services offered
"The boiler installation job was done great. I even accepted an annual service plan to keep up with proper maintenance. They are wonderful to work with."
+22
Serving North Haven, CT and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
Frisco Mechanical is dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty, integrity and transparency. We specialize in central Air Conditioning and cooling systems as well as all types of heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.
Serving North Haven, CT and surrounding areas
Approved
In business since 1991
Free estimates
Emergency services offered
"Very professional experience with radiant heat oil burner servicing, cleaned and replace filters, nozzle selected correct nozzle size for boiler, did though cleaning, did efficiency test and air flow regulation adjustment. Little pricier than other service calls I made in the past but definitely knowledgeable."
+35
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