“Our bedroom radiator banged and gurgled all winter. The technician drained and refilled the loop, and the quiet difference is unbelievable. Friendly guy who respected our home.”
UN
Uma N.Lucan, ON
Services
Boiler Repair, Installation & Maintenance in St. Thomas
Keep your radiators or in-floor hydronic system running efficiently with expert boiler service from St. Thomas Heating & Cooling. We repair, install, and maintain condensing and natural-draft boilers across St. Thomas, Ontario and the surrounding Middlesex County area, working on gas, propane, and oil units in everything from century homes near Lake Erie to newer subdivision builds. Whether you've lost heat on a cold lake-effect night or want to trim fuel bills with a high-efficiency upgrade, our certified technicians deliver honest, code-compliant work.
Why Homeowners Call Us
Boiler has no heat, low pressure, or a leak?
St. Thomas Heating & Cooling provides expert boiler repair, installation, and maintenance in St. Thomas, ON for gas, propane, and oil hydronic systems.
Fast No-Heat, Leak & Pressure Repairs
Whether your boiler has lost pressure, won't fire, or is leaking onto the floor, our technicians diagnose ignition, pump, and circulator problems fast and get your radiators or in-floor loops warm again, often the same day.
High-Efficiency Condensing Boiler Installation
When it's time to replace an aging unit, we size and install high-efficiency condensing boilers that cut fuel bills and fit tighter spaces, ideal for upgrading heritage St. Thomas homes without disturbing original cast-iron radiators.
Annual Maintenance, Flush & Efficiency Tune-Ups
Yearly service keeps your boiler safe and efficient. We inspect burners and controls, check relief valves, and perform system flushes that protect radiators and in-floor loops from corrosion through every Lake Erie winter.
FAQ
Boiler Service in St. Thomas: Common Questions
How much does boiler service cost in Ontario?
Service calls are priced by the visit and repairs by the part and labour. Tune-up, targeted repair, or replacement, the estimate for each is free before you commit.
How quickly can you fix a boiler with no heat?
A technician is typically out within a day, sooner for no-heat emergencies. Once on site, most repairs finish that visit, and you hear immediately if a part needs ordering.
Should I repair my old boiler or replace it?
One repair is maintenance, a third repair in two winters is a message. We lay both costs side by side, including fuel savings, and let you decide.
Reviews
What St. Thomas Homeowners Say
Real feedback from neighbours we've helped stay comfortable year-round.
“When the heat pump iced up overnight, their on-call service answered right away and talked me through a temporary fix until the technician arrived first thing next morning.”
SE
Scott E.Lucan, ON
“They installed a ductless unit in our new sunroom addition in one afternoon, and the tech walked me through the remote settings before leaving. Couldn't be happier.”
NK
Nathan K.Lucan, ON
We Can Help Solve Your Boiler Service Needs
A dripping valve or a full replacement, the first step is free. Book your estimate today and stay warm this winter in St. Thomas.