No-Heat Diagnosis
We find the actual root cause — ignition, pump, control board, or pressure — before quoting.
Boiler Repair and Service
Boiler down? We know hydronic heating inside out.
Boiler not heating? Leaking? Making noise? We diagnose and repair all boiler types across the Niagara Region.
Same-Day Available
Most calls scheduled today
24/7 Live Dispatch
A real local tech answers
Licensed & Warrantied
Workmanship guaranteed
About this service
Boiler Repair and Service in the Niagara Region
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.
What we do
Specialties under Boiler Repair and Service
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.
Why Ottr Plumr
Local. Honest. Warrantied.
We earn the call back by doing the job right the first time.
- Licensed Red Seal plumber qualified for gas and hydronic systems
- 24/7 emergency boiler repair across Niagara
- Diagnosis first, quote in writing before any work
- Annual service plans available
- All boiler makes and models serviced
Common questions
Boiler Repair and Service FAQs
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.
Where we work
Boiler Repair and Service across the Niagara Region
Boiler Repair and Service in St. CatharinesBoiler Repair and Service in Niagara FallsBoiler Repair and Service in WellandBoiler Repair and Service in ThoroldBoiler Repair and Service in LincolnBoiler Repair and Service in GrimsbyBoiler Repair and Service in PelhamBoiler Repair and Service in Fort ErieBoiler Repair and Service in Port ColborneBoiler Repair and Service in Niagara-on-the-LakeBoiler Repair and Service in West LincolnBoiler Repair and Service in Wainfleet
Explore more
Other services
Residential Plumbing
Whole-home plumbing service for Niagara families — drains, faucets, fixtures, leaks, re-pipes, and renovations.
Commercial Plumbing
Dependable service for retail, office, restaurant, and industrial clients. We work around your schedule, not the other way around.
Heating Systems
Stay warm all winter. Furnace, boiler, and radiant heat install, repair, and tune-ups across the Niagara Region.
Water Heaters
Hot water, every time. We install, replace, and service tank and tankless systems sized properly for your home or business.
Sump Pumps
Don't wait for the next storm. Pro-grade sump pumps and battery backups keep your basement dry year-round.
Repairs & Diagnostics
Honest diagnosis. Fair price. We fix what's broken without trying to sell you what isn't.
Drain Cleaning
Slow sinks, gurgling toilets, sewer backups — cleared properly with snaking, hydro-jetting, and camera inspection across Niagara.
Emergency Plumber
24/7 emergency plumbing across Niagara — burst pipes, sewage backups, no hot water, flooding. Real local techs, fast dispatch.
Backwater Valve Installation
Protect your basement from sewer backup. Backwater valves are the single most effective flood protection upgrade for Niagara homes.
Heat Pumps and Air Conditioning
Heat pump installation, AC service, and cooling system repair across the Niagara Region. One system, all seasons.
Ready to book boiler repair and service?
Same-day service available across the Niagara Region.