No-Heat Diagnosis
We find the actual root cause — ignition, pump, control board, or pressure — before quoting.
Boiler Repair and Service in
St. Catharines, Ontario
Local boiler repair and service for St. Catharines homes and businesses — same-day service, honest pricing, and workmanship warrantied in writing.
Same-Day Available
Most calls scheduled today
24/7 Live Dispatch
A real local tech answers
Licensed & Warrantied
Workmanship guaranteed
Trusted boiler repair and service in St. Catharines
Why St. Catharines chooses Ottr Plumr
The Garden City's go-to plumbing and heating crew — from Port Dalhousie waterfront homes to downtown businesses, we keep things flowing.
Ottr Plumr services all boiler types across the Niagara Region: gas boilers, oil boilers, combination boilers, and hydronic radiant heat systems. We diagnose the root cause and quote the repair in writing before any work begins.
Common boiler problems we fix: no heat or hot water, pressure loss, pilot light or ignition failure, pump failures, zone valve issues, radiator not heating, kettling sounds, boiler leaking, and thermostat faults. Most repairs completed on the first visit.
We also offer annual boiler servicing including heat exchanger cleaning, safety control testing, flue and venting checks, radiator bleeding, and pressure verification. For no-heat boiler emergencies call 289-488-1007 — we dispatch 24/7.
We service every corner of St. Catharines — including Port Dalhousie, Downtown, Glenridge, Western Hill, Merritton, Grantham, and Facer — usually same-day for boiler repair and service calls.
What's included
Boiler Repair and Service specialties for St. Catharines
Pressure and Leak Repair
Pressure loss means a leak somewhere. We locate it and fix it rather than just refilling.
Descaling and Power Flush
Kettling and banging in Niagara hard water usually means scale. A flush restores efficiency.
Pump and Zone Valve Service
Circulator pumps and zone valves replaced with common parts stocked on the truck.
Annual Boiler Service
Heat exchanger cleaning, safety control testing, flue check, and radiator bleeding.
24/7 Emergency Response
No-heat boiler calls dispatched any hour, any day, across the Niagara Region.
More in St. Catharines
Other services we offer in St. Catharines
Residential Plumbing in St. Catharines
Whole-home plumbing service for Niagara families — drains, faucets, fixtures, leaks, re-pipes, and renovations.
Commercial Plumbing in St. Catharines
Dependable service for retail, office, restaurant, and industrial clients. We work around your schedule, not the other way around.
Heating Systems in St. Catharines
Stay warm all winter. Furnace, boiler, and radiant heat install, repair, and tune-ups across the Niagara Region.
Boiler Repair and Service elsewhere in Niagara
We also offer boiler repair and service in
FAQs
Boiler Repair and Service in St. Catharines — common questions
Do you offer boiler repair and service in St. Catharines?
Yes — Ottr Plumr provides boiler repair and service throughout St. Catharines and the surrounding Niagara Region, with same-day appointments and 24/7 emergency response.
How fast can a plumber get to St. Catharines?
From our Welland shop we typically reach St. Catharines the same day for non-emergencies and within the hour for true emergencies. Call 289-488-1007 to dispatch.
Why is my boiler losing pressure?
Usually caused by a leak in the system, a faulty pressure relief valve, or air in the system. We diagnose the source and fix the underlying cause — not just refill the pressure.
Why is my boiler making a banging noise?
That sound called kettling is usually limescale or sludge on the heat exchanger. Common in Niagara hard water. A power flush usually resolves it.
Do you service oil boilers?
Yes — we service both gas and oil boilers across Niagara including burner cleaning, nozzle replacement, and heat exchanger checks.
Can you repair a boiler for emergency heat at night?
Yes — 289-488-1007 is staffed 24/7. We carry common ignition components, pumps, and zone valves on the truck for same-visit repairs.
Service area
Boiler Repair and Service across St. Catharines
Need boiler repair and service in St. Catharines today?
Same-day service. Honest pricing. Warrantied work.