About Tri County

Tri County Heating & Cooling is locally owned and operated by Ritchie Lake. Ritchie has been a Red Sealed refrigeration mechanic and Red Sealed oil burner mechanic serving the south shore for over twenty years. He has earned a loyal customer base with his years of experience and expertise. Careful attention to detail on every job allows Ritchie to provide excellent craftsmanship and a high quality of work along with exceptional customer service.

We are a refrigeration and oil burner service and installation company. We offer a variety of services: heat pumps (mini split, central and add-ons), furnaces (electric and oil), and boilers (electric and oil). We also offer yearly maintenance and emergency repair services.

We are located in Milton, serving the South Shore and surrounding areas. We offer competitive rates and exceptional customer service. Tri County Heating & Cooling keeps expanding and growing which allows us to answer all calls in a timely manner with professionalism.

No job is too big or too small! Tri County strives to meet and exceed customer’s expectations. We’re here to help you make the best decision to suit you and your heating and cooling needs!


Harold McGee

I can recommend Tri-County Heating and Cooling without reservation.  From the initial contact, when making an estimate of costs, Ritchie was very clear as to what his quotation included and what it did not. After having made the contract he was very quick in getting all the relevant parts and in preparing the site for

Harold/Hal McGee

Becky Myers

Extremely happy! You guys were amazing, and knowledgeable and fast! We love our new system. Very happy with Ritchie and Julie’s work! They were early, clean, and very knowledgeable. Didn’t try to sell us something we didn’t need. Mike and I highly recommend them!

Becky Myers