A straight answer on what usually goes wrong with a Rinnai RE series tankless water heater in West Vancouver and what a repair visit actually involves.
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Quick answer
Most Rinnai RE series repair calls in West Vancouver come down to ignition or flame-sensing faults, a clogged inlet water filter, or a flow sensor that's stopped reading correctly -- all of which a licensed gas fitter can usually diagnose in one visit. The RE series is Rinnai's non-condensing tankless line, so it doesn't have the condensate-drain issues a condensing model can get, but it still needs a proper combustion, venting, and gas-pressure check before anyone touches the electronics.
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The RE series is part of Rinnai's non-condensing tankless range -- water is heated the moment it's called for, with a dedicated flue standing in for the old atmospheric chimney. In West Vancouver, we run into these units in both older homes that switched over from a tank at some point and newer builds where a tankless unit was part of the original design.
Hotter flue gas comes with non-condensing operation, and that's the reason venting material and clearance distances are treated as load-bearing details, not paperwork. West Van draws from the same Capilano/Seymour system as North Vancouver, so it's soft water, and scale isn't usually what brings an RE series unit down out here.
The complaints we hear most from West Vancouver homeowners are inconsistent hot water temperature, the unit shutting off mid-shower, a delay before hot water arrives that's gotten noticeably longer, or an error light the homeowner can't decode. It generally comes down to one of: a clogged inlet filter, an inaccurate flame or ignition sensor, a blocked vent path, or gas pressure that's out of its normal window.
Lots in West Vancouver tend to be large and the driveways long, with mechanical rooms sometimes a full level below grade on a sloped, view-oriented property, which is a different access problem than a flat-lot city presents.
The first steps are the same on every repair call: gas supply pressure at the unit, venting condition and clearance, a look at the inlet filter, then the sensors. From that baseline, the diagnosis branches according to the particular fault code or symptom in front of the technician.
The District of West Vancouver handles permits, and between the elevation, the mountainside grading, and the length of some driveways, getting equipment and parts to the actual unit can take longer here than the repair itself.
If a component turns out to be the cause -- igniter, flow sensor, gas valve, control board -- the explanation precedes the order, every time. When it's the heat exchanger, repair pricing often climbs close to what replacement would cost, which is exactly when an honest comparison is worth having.
A tankless repair's rough 2026 public-market range -- not a quote until CANRO's certified technicians take a short look -- is $250 to $900, on top of the standard $90 to $150 diagnostic/service call, which is credited toward the repair. The number within that range is driven by which part failed, how accessible the unit is, and whether venting work is also needed.
Higher elevation streets get colder overnight than the waterfront does, and a unit installed on an exterior wall on the upper slopes is more exposed to that swing than most people realize when they buy up here.
The gas line, burner assembly, and venting on an RE series unit can only be legally touched by a Technical Safety BC licensed gas fitter -- that's a safety line, not a suggestion.
What a homeowner in West Vancouver can safely do before calling: note exactly what the unit is doing (error light pattern, when it fails, whether it's every use or intermittent), check that the gas isn't shut off at a valve somewhere, and make sure nothing is blocking the exterior vent terminal -- snow, leaves, a bird's nest, or storage boxes pushed too close. Anything beyond that short list is a licensed technician's job, not a homeowner's.
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.
The RE series is Rinnai's current non-condensing tankless line, so parts and service support are both actively available -- this isn't a discontinued model situation.
Most straightforward repairs -- a sensor, an igniter, a filter clean -- are done in one visit once the part is on the truck or sourced locally. If the venting needs work too, budget more time for that portion specifically.
You can power-cycle it once to see if the fault clears, but if the same error comes back the unit is telling you something real failed, and repeatedly resetting a gas appliance without diagnosing the cause isn't a safe habit.
Yes, mineral scale is one of the bigger long-term threats to any tankless heat exchanger. West Vancouver is mostly on soft treated water, so this matters less here than in a well-water area, but periodic descaling still extends the unit's working life.
If the heat exchanger itself has failed, if the unit is old enough that parts availability is getting difficult, or if you're facing a second major repair within a couple of years, replacement usually works out better than chasing repairs on an aging unit.
For most repairs that don't involve re-piping gas or re-routing venting, a permit isn't triggered, but any work that does change the gas line or vent path needs to go through the local permitting authority before it's signed off.
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