Tankless Water Heater Leaking? Fittings, Heat Exchanger & Fixes Licensed CANRO technicians, same-day service across Metro Vancouver. Call (604) 359-1081.
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Most tankless leaks come from isolation valves and fittings or from scale damaging the heat exchanger. Tankless water heaters are reliable, but when they leak the cause is usually scale and skipped descaling, loose fittings, or condensate on condensing models. Metro Vancouver’s water plus years without a flush is the number-one reason tankless units develop leaks and heat-exchanger trouble. Our Red Seal technicians have kept Metro Vancouver homes warm and dry since 1999 — call (604) 359-1081 for same-day help.
Most tankless water heater leaks trace back to one of these causes:
An active tankless leak near electrical or gas components needs prompt attention. If you smell gas, leave it alone and call from outside. Most tankless leaks are contained, but a cracked heat exchanger should be assessed quickly before it worsens.
CANRO isolates the leak to fittings, valves, condensate or the heat exchanger, reseals or replaces failed parts, and — critically — descales the unit to remove the root cause. We also right-size and install new tankless units when replacement makes more sense.
Fitting and valve repairs run about $200–$500; a professional descale is roughly $180–$320. A cracked heat exchanger is major and often points toward unit replacement — we will quote both paths. Every job starts with a clear, upfront price — no surprises.
CANRO covers Vancouver, Burnaby, Surrey, Richmond, Coquitlam, North & West Vancouver, New Westminster, the Tri-Cities, Delta, Langley and beyond. Call (604) 359-1081 or request a free quote and we will get a licensed technician to you fast.
The usual causes are loose fittings/valves, condensate on condensing models, or internal damage from scale. Hard water without regular descaling is the most common root cause.
Descaling removes the scale that stresses and corrodes the heat exchanger, preventing many internal leaks. We descale as part of the repair so the problem does not come straight back.
Fittings, valves and condensate leaks are repairable. A cracked heat exchanger is major — we will give you honest repair-versus-replace numbers.
Related help from CANRO:
“Canro does an amazing job! Super professional and skilled with everything—boilers, furnaces, and AC. Always a pleasure working with them!”
“Five stars for Canro. We needed a replacement of a 30-year-old boiler. A new high-efficiency unit was installed—clean, professional work.”
“I can’t speak highly enough about George, who was recommended for a boiler service call for my parents’ home. George is excellent.”
25+ years keeping Metro Vancouver homes comfortable. Honest advice, upfront pricing, work that lasts.