Cast-iron radiators in White Rock's older character homes can often be repaired for years before a full replacement makes sense.
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Quick answer
Replacing a single radiator on a residential gas boiler system in White Rock typically costs $250–$1,800, with most jobs in the $400–$900 range including the $90–$150 diagnostic call — a 2026 public-market ballpark, not a quote. CANRO's certified gas technicians confirm the exact price after inspecting the radiator's condition and how it's plumbed into your system.
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| Item | Typical range |
|---|---|
| Diagnostic / service call | $90–$150 (usually credited toward the repair) |
| Licensed labour | $95–$165 per hour |
| Single radiator replacement, typical bill | $250–$1,800, most $400–$900 |
A radiator replacement covers removing the failed unit, disconnecting it from the supply and return piping, and installing and reconnecting the new one. Cost varies a fair bit depending on whether you're replacing like-for-like with a similar-style radiator or switching to a different type, which can involve more piping adjustment.
Many radiator issues are actually valve or air-related rather than the radiator itself failing, so a technician confirms the radiator body is genuinely the problem before recommending replacement over a smaller repair.
Radiators are one of the areas where repair genuinely competes with replacement more often than with some other boiler components. A cast-iron radiator with a single failed valve connection or a minor leak at an accessible joint can sometimes be repaired rather than replaced outright, and cast iron is a durable material that can outlast several other parts of a heating system when it isn't visibly corroded through. Where replacement makes more sense is a unit with active internal corrosion, a crack in the casting itself, or damage severe enough that a repair wouldn't be reliable long-term. This is a judgement call best made in person rather than assumed from a phone description.
White Rock has a real stock of older character homes, particularly up the hill away from the waterfront, that still run original cast-iron radiators from decades past, some tied to systems installed long before current condensing boilers became standard. These radiators are often oversized relative to what a modern high-efficiency boiler would put out, which is a design detail worth discussing with your technician if you're replacing a radiator on a system that's also had recent boiler work — mismatched sizing between old radiators and a newer boiler can affect comfort.
Access matters here too: radiators on upper floors of older two- and three-storey character homes can mean more careful handling given their weight, compared to single-level newer townhomes closer to uptown.
Safety note
A radiator is connected to a gas-fired boiler's pressurized water system, so replacement should be done by a Technical Safety BC licensed gas fitter who can safely isolate, drain, and refill the loop. If you ever smell gas near the boiler, leave the home first and call FortisBC's emergency line at 1-800-663-9911 from a safe location.
Not always — a small leak at an accessible joint can sometimes be repaired, but active corrosion through the casting itself usually means replacement is the more reliable option.
Your technician selects a replacement sized to match your room's heating needs, which may look different from the original but is calculated to perform comparably.
Usually just the affected zone or a partial drain-down is needed, not the entire system, depending on how the piping is arranged.
Yes, cast iron is durable and many older units continue performing well for years — there's no need to replace a radiator that isn't showing problems.
A single radiator swap with reasonable access is often a half-day job including drain-down, disconnection, and refill.
It can slightly, so your technician typically rebalances the affected zone after installation to keep heat distribution even.
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