AC Installation Services
HVAC, Electrical & Plumbing Services

Serving Taunton and Surrounding Areas Since 1948

AC Installation Services
Choose Boston’s Home Team!

Keeping Your Business Comfortable Is Our Priority

Contact us for emergency
24/7 Emergency Services

Repairs Rarely Come at a Convenient Time.

Over 75 Years In Business

We Have The Experience You Can Trust.

Contact us

We’re Here For You 24/7 – Guaranteed, Day Or Night!

Call to Schedule Service: 24/7


Heating & Cooling Services

Best-In-Class Heating & AC Repair, Installation & Maintenance

Cotti-Johnson is committed to providing top-tier HVAC services in Weymouth to both residential and commercial customers. We believe that quality service starts with quality people, which is why we’ve assembled a team of highly trained full-time tradesmen to serve you.

Whether you need a routine system checkup or a complete overhaul of your system, our Weymouth HVAC experts can work with you to ensure that your project is completed correctly and efficiently.

We’re honored to have earned so many glowing reviews from the many customers we have helped over the past 75+ years, and we look forward to continuing to serve the people of Weymouth and the surrounding areas for many more years to come.

24/7 Emergency AC Services

Contact the professionals at Cotti-Johnson for quick and reliable emergency services if your air conditioning unit is out of power, unable to wait.

AC Unit

We can deal with all your heating system needs, from original installations to complete replacement for an air conditioning system.

Air Conditioning

A little TLC is needed for every heating, ventilation and air conditioning system! We’ll take care of your AC tune up and maintenance, so that you don’t have to worry about it.


Our highly trained and licensed technicians will be able to deal with the problem, regardless of what kind of AC repair needs you have.

Our Special Offers

Here are some of our current offers, call for additional details. All specials are subject to availability, some terms apply, some terms based on credit approval. Offers cannot be combined.