How to tell when a Rinnai RE series unit in Vancouver 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 Vancouver 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.
The rule that holds up in practice: repair for sensor, igniter, gas valve, or control board issues; replace once the heat exchanger goes.
Vancouver's older character homes and post-war houses were mostly built around a chimney and a cast-iron boiler or an atmospheric-vent water heater, not a sealed-combustion tankless unit, so a retrofit here often means re-thinking how the appliance is vented rather than just swapping boxes.
The baseline job is a like-for-like swap -- new unit installed in the same place, same venting, same gas line size. The project grows once venting needs current-code work, the gas line needs upsizing, or the household wants higher capacity.
The City of Vancouver issues the gas permit, and narrow lots with lane access mean the mechanical room is frequently tucked into a tight basement corner or a converted closet, which limits clearance and can add real time to a repair visit.
Vancouver rarely sees hard freezes, but the older housing stock's original masonry chimneys and side-wall penetrations weren't designed for a direct-vent appliance, and that mismatch is behind a lot of the venting calls we get here.
The city draws from the Capilano, Seymour, and Coquitlam reservoirs, which is soft water by most standards, so an RE series unit here is rarely failing because of mineral scale the way one on a well-fed property might.
If descaling was never done regularly on the old unit, that's often a contributing factor -- worth planning it for the new one given the water here.
The 2026 ballpark on the public market -- a starting point, confirmed by CANRO's certified technicians after assessment -- for tankless installation is $3,500 to $7,500. Where it falls comes down to direct swap versus venting/gas-line work, the capacity of the chosen unit, and site access.
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.
It begins with an assessment, either a site visit or photos and video for a first-pass scope, then a written quote once the scope is confirmed. A gas permit is sorted before install day when one's needed; the day itself is removal, setting the new unit, gas/venting hookup, and testing under load.
We avoid promising a specific turnaround because permit processing and parts availability for the model chosen both vary -- scope and price get agreed in writing beforehand.
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 Vancouver, 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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