How to tell when a Rinnai RE series unit in New Westminster is worth replacing rather than repairing again, and what the swap itself involves.
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Quick answer
A Rinnai RE series unit in New Westminster is usually worth replacing once the heat exchanger has failed, the unit is old enough that a second major part failure shows up within a year or two of the last one, or the household's hot water demand has simply outgrown what a non-condensing tankless unit that size can deliver. Replacement is done by a Technical Safety BC licensed gas fitter once permits and any venting changes are sorted out.
Need a licensed gas fitter for your tankless water heater? Call CANRO at (604) 359-1081 — residential natural-gas heating and hot water across Metro Vancouver since 1999.
As a rule, sensor, igniter, gas valve, or control board issues point to repair; a failing heat exchanger points to replacement.
As one of the older incorporated cities in the province, New Westminster still has a lot of narrow character homes and older low-rise buildings stacked up its hillside streets, and the mechanical room in these places is frequently a converted coal-cellar corner with barely enough clearance to work in.
The simplest version is a like-for-like swap: new unit in the same location, same venting, same gas line size, nothing else changed. Complexity rises when venting has to meet current code, the gas line needs upsizing, or the homeowner wants a higher-capacity unit.
The City of New Westminster handles the gas permit, and because so many of the streets climb steeply off Columbia and Royal, a technician's van sometimes can't park directly outside the house, which adds a genuine logistics step to a repair or swap that a flatter neighbourhood wouldn't need.
The hill itself doesn't add much frost risk, but older homes here were built before anyone was routing PVC intake/exhaust through a masonry wall, so venting retrofits come up more than the cold does.
New West runs on the same treated, soft Metro Vancouver reservoir water as most of the region, so scale buildup inside the heat exchanger is usually a slower process here than in areas with harder or well-fed supply.
Skipping regular descaling on the old unit is often part of why it failed, so it's worth planning a descaling schedule for the new one given the local water.
For 2026, the public-market ballpark for a tankless installation -- confirmed only after CANRO's certified technicians assess it -- generally lands at $3,500 to $7,500. The number within that range hinges on direct swap versus venting or gas-line changes, unit capacity, and access to the current location.
A short in-home or video assessment is how CANRO gets from that ballpark to an actual quote -- there's no way to price a job like this honestly without seeing the existing setup, the venting path, and the gas line.
The process opens with an assessment, whether that's an in-person visit or photos and video for a first read, followed by a written quote once scope is settled. A required gas permit is pulled before installation day; on the day itself the old unit comes out, the new one goes in, gas and venting are connected, and it's tested under load.
We won't promise a set turnaround, because permit processing and parts availability for the chosen model both affect timing -- what's fixed is the written scope and price up front.
Safety note
If you ever smell gas, hear a strong hiss at the unit, or see scorching or soot around the vent terminal, leave the home first and call FortisBC's emergency line at 1-800-663-9911 from outside. Don't try to relight a gas appliance yourself once it has shut itself down on a safety lockout -- that's the unit doing its job, and a licensed gas fitter needs to find out why before it runs again.
In almost all cases, yes -- gas water heater replacements require a permit through the City of New Westminster, and CANRO handles that as part of the job.
Often, yes, as long as the gas line and venting can support the larger unit's demand -- that's exactly the kind of thing your technician checks during the assessment before quoting.
They're different designs with different venting requirements and different upfront costs; which one makes sense depends on the existing venting, the gas line, and the household's hot water demand, and that's worth discussing during the assessment rather than assuming one is universally better.
CANRO removes and disposes of the old unit as part of a standard installation -- that's included in the scope, not billed separately, unless the removal itself is unusually difficult to access.
Rinnai doesn't publish a guaranteed lifespan and neither will we, but a well-maintained tankless unit with regular descaling generally has a long working life; how long any specific unit lasts depends on water quality, usage, and maintenance history.
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