Your Local Heating & AC Experts

Chiasson’s Heating and Air Conditioning is proud to be committed to your total home comfort. More than anything we want you to feel confident in choosing Chiasson’s Heating and Air Conditioning for your home. Chiasson’s offers the BEST price and warranty for residential & commercial, heating and air conditioning.

Our Customers become our Friends!

We offer free on-site estimates for new and replacement systems. We also have maintenance and service contracts.

During an emergency, don’t hesitate to call. We have 24-hour emergency heating and air conditioning repair service. 24-hour Emergency Service on Oil & Gas Furnaces.

In addition to maintenance and service contracts, we offer up to 10-year warranties for parts and labor.

Heating Systems

Furnace repair, boiler repair, with a specialty on oil furnaces

Air Conditioning Systems

Central AC system installation, duct work repair and more

Hot Water Heaters

Water heater installation and more

Duct Cleaning Service

Improve your air quality – help with allergies

Generac Generators

Authorized service dealer

Dehumidifiers & Humidifiers

Installation and Repairs


They do what they promise! Had an after hours furnace issue on a very cold night. Chiassons was the ONLY place to answer their "24/7 Emergency" number. I called many places and most did not answer and didn't even have a way to leave a message. Of the few I was able to leave a message for only ONE ever called me back. Unfortunately for them it was 20 minutes after I called Chiassons and spoke w/ the owner immediately. Someone was at my house in less than 30 minutes. It took a couple trips to keep the furnace running but they eventually got it and always responded right away. When I replace this old furnace guess who I'll stop in to see FIRST?

thumb ed yates
March 13, 2019

Chuck had our best interest and needs in mind, he never once tried to sell us more than we needed or spend unnecessary money. 2 days from initial phone call to a new furnace up and running. His employees were knowledgeable, helpful and treated our home with the utmost respect. 5++++ stars

thumb Mark McPherson
March 14, 2019

Don was very helpful and professional. He answered our many questions about our new home. Explained everything he was doing so that we understood exactly what we were paying for. We would definitely recommend and continue to use them for our heating needs.

thumb Desiree Dorsch
November 6, 2018


Contact Us

With over 30 years of experience installing and repairing HVAC systems, Chiasson’s Heating and Air Conditioning Inc. has been offering the sale, service and installation of heating and cooling systems, as well as hot water heaters, in the Oswego, NY area since 1999. Contact us today to let us help you!

Contact Us
First & Last