About Us

About Cotti-Johnson


The “Cotti-Johnson Companies” opened it’s doors in 1944, and Incorporated in 1948. War Veterans Louis Cotti and Bill Laurence were sheet metal workers who set up shop at the Weymouth Shipyard just after the war, opening the doors as “Cotti-Laurence, Inc”.

Their primary focus was installing heating systems during the massive home construction of the South Shore spanning thru the 1950’s. In 1954, Louis Cotti purchased the remainder of the company from Bill Laurence, and ran the company by himself until the mid-1970’s, as the premier heating & cooling contractor on the South Shore.

Gary Johnson entered the company in the mid-1970’s, and introduced the Equipment and Commercial side of the business as his background was Equipment Sales. Louis and Gary expanded their Commercial Focus as the South Shore experienced growth of population bringing all sorts of Businesses needing heating & cooling services.

Gary then purchased Cotti-Johnson from Louis as Louis reached retirement age in 1984. For another quarter-century, Gary and his team designed, fabricated, and installed thousands of heating & cooling systems in Commercial & Residential settings all over Eastern Massachusetts.

20 years later, in 2004, Lead Estimator, John Boutin was made minority partner, and a few years later sold the business to Adam V. and Angelo S. Boccalini. Adam and Angelo made lifetime employee, Kevin Main, minority partner upon purchase. Kevin has over 30 years of experience-his Lifetime of work, here at Cotti-Johnson.

Adam and Angelo have introduced over 40 years of Business Management and “outside of the box” thinking to the rock-solid foundation of the Post-War Cotti-Johnson Companies

Superior Quality

Cotti-Johnson believes that a quality job begins with quality people, so we employ only highly trained, full-time tradesmen. Our entire team strives to provide the highest quality work along with professional, reliable services.

We take pride in making customers exceptionally pleased on each and every job.


We recognize the importance of proper planning and staging on projects. This saves you money, produces a better end product and makes for a smooth running job site. We work directly with you to plan the job from the start. We are always thinking three steps ahead. Our professional estimating, project managing, and production staff is your guarantee that the project is completed on time, with uncompromising quality.

When you hire Cotti-Johnson, you get experience, knowledge, quality, and commitment. Call our Taunton HVAC experts at 774-768-5154.

Make Cotti-Johnson Your First Choice

Learn why our customer-focused services are the best choice for you.
  • Service On Time
  • Warranties on Parts & Labor
  • Customer Satisfaction Guaranteed
  • Family Owned & Operated
  • Honest Pricing
  • 70+ Years of Experience

Getting Started Is Easy

Fill out this form or call us at 774-768-5154 to schedule your service with our team.