“Excellent response time and very knowledgeable technicians. Our home was comfortable again by morning.”
MZ
Mark Z.Dorchester, ON
Services
Boiler Service St. Thomas, ON
St Thomas Heating & Cooling: Boiler repair, installation, and maintenance for St. Thomas and Middlesex County homes. We service condensing and natural-draft boilers, fix no-heat calls, leaks, and pressure faults, and install high-efficiency replacements sized to your home.
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.
Reviews
What St. Thomas Homeowners Say
Real feedback from neighbours we've helped stay comfortable year-round.
“Friendly staff and outstanding workmanship. Our system runs better than ever after their visit.”
JL
Jennifer L.Aylmer, ON
“Fixed the problem quickly and explained everything clearly. Great service from start to finish.”
DP
Daniel P.London, ON
We Can Help Solve Your Boiler Service Needs
Don't let a comfort problem disrupt your home. Get fast, reliable service from a licensed, insured St. Thomas HVAC team.