Renfrew's mix of post-war bungalows and older hydronic systems means boiler repair calls here run the full range from a quick sensor swap to a bigger fix.
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Quick answer
Boiler repairs in Renfrew typically fall between $250 and $1,800, with the majority of real jobs landing around $400 to $900 once the failed part is identified. This is a 2026 public-market ballpark, not a quote — CANRO's certified gas technicians confirm the actual cost once they've opened the panel.
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Renfrew, tucked between Boundary Road and Nanaimo Street near the Renfrew Ravine, has a lot of housing stock from the 1940s through the 60s, along with newer infill and laneway construction going in more recently. Older homes here sometimes still run hydronic radiant heat off a boiler original to a previous renovation, and those systems tend to generate a different kind of call than a modern condensing unit: sticking zone valves, aging circulator pumps, and corrosion at fittings that have been in place for decades.
Newer boilers installed in the neighbourhood's infill homes tend to have more electronic components, so their failures skew toward control boards and sensors rather than mechanical wear. Either way, the diagnostic visit is the starting point — a $90–$150 service call that's usually credited toward the repair — followed by labour at $95–$165 an hour.
| Repair | Typical installed cost |
|---|---|
| Igniter or flame sensor | $100–$400 |
| Zone valve | $300–$650 |
| Circulator pump | $300–$1,100 |
| Gas valve | $200–$1,100 |
| Control board | $570–$1,040 |
| Expansion tank | $200–$800 |
| Heat exchanger (often replace-boiler territory) | $840–$2,180 |
For a boiler under about 12 years old, most failures are worth repairing outright. Past that, the calculation shifts, especially for a heat exchanger failure — that single repair can run close to what a portion of a new boiler installation costs, which usually tips the decision toward replacement instead. CANRO's technicians walk through both numbers on-site rather than defaulting to either option, since a well-maintained older boiler can still have useful years left in it.
A cold house with the boiler completely dead usually means an ignition or safety lockout, which a technician can often clear and diagnose quickly. One cold radiator while the rest of the house is warm typically points to a stuck zone valve or trapped air in that specific loop rather than a boiler-wide fault — that distinction matters, because it changes which part gets replaced. A boiler that short-cycles, turning on and off repeatedly without settling into a steady run, often traces back to a pressure or flow issue rather than the burner itself.
Noting which of these patterns matches your situation before the technician arrives helps narrow the diagnosis faster, though it's never a substitute for an in-person inspection — especially on an older hydronic system where more than one issue can be present at once.
Safety note
If you smell gas near the boiler, leave the home immediately and call FortisBC's emergency line at 1-800-663-9911 from outside — never attempt to relight a pilot or touch gas fittings yourself. All gas fitting work must be performed by a Technical Safety BC licensed gas fitter; CANRO holds gas licence LGA0043870 and boiler licence LBP0046450.
Many still run hydronic radiator systems with mechanical parts — pumps, zone valves, older fittings — that simply have more components to wear out than a modern system.
It's billed separately but credited toward the repair if you go ahead, which is standard practice.
Generally no — most laneway and suite setups in Renfrew have their own dedicated heating source, which is a separate consideration from the main house's boiler repair.
Circulator pumps and zone valves come up often in the older hydronic systems, while newer infill homes tend to see more control board and sensor issues.
That's reasonable for anything approaching heat exchanger or full control system territory, since that's close to replacement-cost range.
No — it's a ballpark drawn from 2026 public market data. Your actual cost is confirmed by a CANRO technician after inspecting the boiler.
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