4.5 
903 *The Angi rating for Boiler Installation companies in Cos Cob, 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 Cos Cob, 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 September 16, 2026
Serving Cos Cob, CT and surrounding areas
Approved (Corporate)
In business since 1946
Free estimates
Emergency services offered
"Outstanding service and professional installation!!"
+6
Serving Cos Cob, CT and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Very please with the install. Vin was very professional and applied due diligence to the project. His oversight and instruction provided the reinsurance that needed. I requested four heating and AC vendors to provide proposals. Tyler was most responsive to my questions and offered me alternatives along with helpful suggestions. My next project is my boiler. I will be turning them in the future."
+172
Serving Cos Cob, CT and surrounding areas
Approved
Super Service Award Winner
In business since 1992
Emergency services offered
Warranties offered
"Oct. 6 2025 it went quick. I received an estimate of The job first. The work was done correctly. It didn't take long. If I need plumbing service again. I would contact Cassidy plumbing & Heating."
+3
Serving Cos Cob, CT and surrounding areas
Approved
In business since 1922
Free estimates
Emergency services offered
"Completed a tough job in a timely manner. Good communication and professional installation at a reasonable price. Friendly and neat job."
Serving Cos Cob, CT and surrounding areas
Approved
In business since 1938
Free estimates
Emergency services offered
"They were great! Even found a way of adding a 40 gallon water heater to a smaller space. Which has been wonderful! They worked in a VERY tight space and got the job done! I highly recommend them! Will be using them to install my central air as well!"
+1
Serving Cos Cob, CT and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"The plumber was berybeasybto deal with and very experienced. He did a great job."
Serving Cos Cob, CT and surrounding areas
Approved
In business since 1922
Free estimates
Emergency services offered
"The service was prompt. The owner, Louis came to estimate the job and then send a plumber, Kelroy who was worked quickly and was very professional and personable. When I felt the price was steep the owner adjusted it. I will use this company again."
Serving Cos Cob, CT and surrounding areas
Approved
In business since 1976
Free estimates
Emergency services offered
"Thorough explanation, great service, neat installation and competitive pricing. Would hire again."
+8
Serving Cos Cob, CT and surrounding areas
Approved
In business since 1999
Free estimates
Credit card accepted
"Very positive experience. They responded immediately when I sent the request. The gentleman who called asked me questions about my current setup and had a technician out promptly. The quote was reasonable and the job was completed in one day. Staff were friendly. Happy customer!"
+9
Serving Cos Cob, CT and surrounding areas
Approved
In business since 1967
Free estimates
Emergency services offered
Pack-Timco, LLC Heating and Cooling is one of the oldest and most reputable HVAC companies for over 50 years. Starting in 1967, Pack-Timco, LLC Heating and Cooling begun as a one-man, one-truck service operation by Lawrence C. Pack.\nPack-Timco is a full-service heating and cooling company serving residential and light commercial customers throughout Fairfield and Westchester counties.\n\nWe understand the demands of high-end residential design: discreet elegance, architectural harmony, and absolute performance. That’s why we specialize in tailor-made HVAC systems that integrate flawlessly into even the most ambitious homes.
From average costs to expert advice, get all the answers you need to get your job done.
The average boiler installation cost depends on size, system type, and other factors. Keep reading to learn the cost of a new boiler in New York City.
The average boiler installation cost depends on size, system type, and other factors. Keep reading to learn the cost of a new boiler.
Discover the average electric boiler installation cost, key price factors, and ways to save. Get transparent, expert-backed estimates for your project.
Looking for a qualified boiler installation pro? Learn how to find and hire the right professional, from credentials to questions to ask.
Installing a boiler requires care and precaution. Use this checklist to install a boiler safely.
Installing a boiler DIY isn’t recommended without the proper skills and experience. Learn how to safely install a boiler in this guide.
