Western Connecticut’s leader in service and comfort for over 100 years

heating oil


For over 100 years, we has been taking care of our Danbury-area neighbors with reliable fuel delivery and outstanding equipment service.


Leahy’s Fuels helps you create the backyard of your dreams with installation of propane pool and spa heaters, grills and firepits.

Community Support

We are a local family business with a long history of helping service organizations and institutions in the Greater Danbury area.


From New Milford to New Canaan, Ridgefield to Brookfield, and all over our service area covering Western Connecticut along with parts of Dutchess, Putnam, and Westchester County, NY, Leahy’s Fuels provides the fuel delivery and service that makes your home comfortable year-round. Find out if we’re in your neighborhood!

“I changed my system from oil to propane. Working with everyone was a great experience, from Dan to the installation crew. They were polite, neat, and respected my home and surroundings. Thank you so much!”
—Carmela D.

“I can’t say enough about Leahy’s customer service and technicians. The guys who come out for service calls are awesome, as is Kelly back at the office. They go above and beyond for their customers! They are really wonderful!”
—Debra G.

“I’m very happy with new furnace replacement. Guys did a good job and am happy it was done so quickly in the cold weather. They were friendly and neat and cleaned up after themselves.”
— Stephen B.

“Very pleased with Dan and his team guiding me through options for standby generator installation and for professionally completing their part of the installation.”
Walter B.

“I was so pleased with the outstanding service we received from Leahy’s Fuels. We always received a prompt response, and all the people I had to interact with were pleasant and truly understood what we needed.”
Jane N.

“Another moment of exemplary service. Friday at 7:45 p.m., I just realized I do not have hot water. I call Leahy’s Fuels, and have a wonderful technician named Andy at my home by 8:15 p.m. Cleans filters, we are back and running, at 9:00 p.m”
Aaron C.