Three J’s is your trusted heating and air conditioning company on the East End of Long Island. We have been proudly serving our customers from Montauk to Southampton for over 10 years.

Our Heating and A/C Corp is a family run, local business that services residential properties and commercial buildings. Our goal is to provide our customers with top of the line equipment with the best installation and service available in the HVAC industry.

We have of experienced HVAC mechanics. From regular maintenance to new installations we’re ready to service you 24/7, 365 days a year.

The company is fully licensed and insured. We also are mold certified and our water damage team is ready to respond to any emergency situation you may have. We strive for efficient and economical service.

We proudly founded Smartseal to further dedicate yourselves to improve the efficiency in performance of all heating, ventilation, and air conditioning equipment and its installation processes.

Over the years our team has persevered to define the competitive HVAC market with innovative technology for achieving optimal results, hence saving our customers high energy costs and helping preserve the environment. We’ve been working with mechanical engineer firms and Aeroseal® for many years to develop a process to deliver the most energy efficient product.

Smartseal is committed to provide energy efficiency solutions that will protect our environment for future generations.

We also offer a 10% discount to senior citizens.

We are located in Amagansett, New York and service Suffolk County from Southampton to Montauk.