A control board replacement is one of the pricier single-part boiler repairs, but it's still far cheaper than replacing the unit.
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Quick answer
Replacing a control board on a Noritz boiler typically costs $570 to $1,040 for the part and installation, plus $95 to $165 per hour for licensed technician labour. That is a 2026 public-market ballpark, not a quote — CANRO's certified gas technicians confirm the exact price only after ruling out other causes and confirming the board itself has failed.
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The control board is the boiler's central electronics — it manages ignition sequencing, monitors safety sensors, runs the display and error reporting, and coordinates the circulator, gas valve, and other components so they operate in the correct order. When it fails, the symptoms can look like almost anything: no heat at all, erratic cycling, a blank or frozen display, or a unit that seems to start but shuts down partway through ignition.
Because a failing control board can mimic other faults — a bad sensor, a wiring issue, or a gas valve problem can all produce similar symptoms — a proper diagnostic visit is especially important before this part gets replaced. Swapping a control board that turns out not to be the actual problem means paying for a part the boiler didn't need. A licensed technician will typically test the simpler, cheaper possibilities first.
| Item | Typical range (CAD) |
|---|---|
| Diagnostic / service call | $90–$150 (credited toward repair) |
| Control board, part and installation | $570–$1,040 |
| Licensed gas technician labour | $95–$165 per hour |
Control boards are commonly documented as model-specific rather than universal, so pricing and availability can vary — always confirm against your unit's rating plate and manual rather than assume a part from a different model will work.
A control board replacement, even at the higher end of its range, is still well below the cost of a new installation, so it's almost always worth doing on a boiler that is otherwise in good shape. It becomes a harder call on an older unit where a control board failure is one of several issues surfacing around the same time — in that case, ask your technician for a direct comparison between the repair cost and a new install before committing.
It's worth noting that a control board failure can sometimes be triggered by an unrelated electrical issue in the home, such as a power surge or a poor connection at the panel feeding the boiler. A technician who finds no obvious mechanical cause for the failure may recommend checking the home's electrical supply to the unit, since replacing the board without addressing that root cause could leave the new board vulnerable to the same failure.
There's no way to guarantee a control board never fails, but keeping the mechanical room reasonably dry and free of dust, and having the system serviced annually so a technician can catch loose connections or early corrosion before it causes a failure, are both practical steps that reduce the odds of an unexpected breakdown. A board that fails during a cold snap is far less convenient to deal with than one caught early during a routine service visit.
Safety note
The control board manages ignition and safety monitoring, so replacing it is gas appliance work that must be performed by a Technical Safety BC licensed gas fitter. CANRO holds gas licence LGA0043870 and boiler licence LBP0046450. If you notice repeated failed ignition attempts, a gas smell, or unusual burner behaviour, leave the house and call FortisBC at 1-800-663-9911.
Typically $570 to $1,040 for the part and installation, plus labour billed at $95 to $165 per hour.
A licensed technician tests simpler causes first, since symptoms like no heat or erratic cycling can also point to sensors, wiring, or the gas valve.
Boards are commonly documented as model-specific, so availability varies; your technician can confirm lead time once the exact model is identified.
If the board is the actual cause, yes — but erratic cycling can also stem from other components, which is why diagnosis matters before ordering the part.
On an otherwise healthy unit, the repair is well worth it. If several major parts are failing around the same time, ask for a repair-versus-replace comparison.
Some models need configuration steps after a new board is installed, which your technician includes as part of the job.
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