Last updated: May 28, 2026 · CANRO Heating & Cooling, TSBC Class-A licensed since 1999.
Direct Answer
CANRO repairs high-efficiency boiler leaks across Metro Vancouver — TSBC Class-A gas fitters, same-day dispatch where possible, OEM parts for every major brand. Typical repair $185–$1,400. 1-year labour warranty. Call (604) 359-1081.
Water leaking from your boiler?
Shut off the water supply. Call CANRO — TSBC-licensed, same-day dispatch where possible.
📞 (604) 359-1081High-Efficiency Boilers are widely installed across Vancouver and Metro Vancouver. Like all boilers, they develop water leaks over time — usually from fittings, pumps, expansion tanks, or eventually the heat exchanger itself. CANRO has serviced high-efficiency boilers daily for 27 years across all of Greater Vancouver.
What to do RIGHT NOW if your boiler is leaking
- Shut off the water supply to the boiler (usually a lever or gate valve on the cold inlet).
- Turn off the boiler at its wall switch or breaker.
- Place towels or a bucket to contain the leak.
- If you smell gas: leave — call FortisBC 1-800-663-9911 from outside.
- Call CANRO at (604) 359-1081 for same-day dispatch.
- Take photos of the leak source and any visible damage — speeds up diagnostic.
Common boiler leak locations we diagnose and repair
| Leak location | Likely cause | Typical repair |
|---|---|---|
| Heat exchanger (HE) | Corrosion, scale erosion, thermal stress crack | $1,400–$3,800 (or warranty) |
| Pressure relief valve (T&P) | Pressure overshoot, faulty valve | $185–$320 |
| Circulator pump seal | Worn seal, bearing failure | $350–$650 |
| Expansion tank | Bladder rupture, fitting corrosion | $220–$420 |
| Boiler fittings / unions | Thread wear, gasket fatigue, vibration | $185–$420 |
| Condensate trap / drain | Cracked plastic, blocked outlet | $185–$320 |
| Auto air vent | Stuck valve, debris | $145–$240 |
| Domestic hot-water plate (combi) | Scale damage, pinhole leak | $420–$850 |
What is unique about high-efficiency boiler leaks
High-efficiency (condensing) boilers leak primarily from the secondary heat exchanger, condensate trap, and DHW plate (combi models).
Common causes of boiler leaks in Metro Vancouver
- Over-pressurization. Expansion-tank failure or fill-valve fault drives system pressure above 30 psi — pressure-relief valve discharges water.
- Corrosion from oxygenated water. Old systems with frequent water top-ups introduce dissolved O₂ that pits steel and copper.
- Scale buildup on heat exchanger. Hard water (some Surrey and Richmond areas) leaves mineral deposits that crack the HE under thermal stress.
- Vibration fatigue on fittings. Decades of pump cycling loosen unions and threaded joints.
- Frozen pipework in unheated spaces. Rare in Vancouver but a real risk for crawlspace runs during cold snaps.
- End-of-life heat exchanger. 15+ years of thermal cycling eventually opens micro-cracks.
- Improper installation. Wrong gas pressure, oversized boiler short-cycling, or missing isolation valves all shorten component life.
How CANRO diagnoses a boiler leak
- Shut-off & safety verification. Water supply isolated. Power confirmed off where required.
- Visual inspection of the boiler cabinet, fittings, and surrounding plumbing.
- Pressure-test isolation. Each loop (heating vs DHW vs primary) isolated to localize the leak.
- Heat exchanger pressure test for hairline cracks (combustion-side leaks).
- Combustion analysis on gas appliances to verify no flue-side condensate damage.
- Written quote with three options when repair vs replace is on the table.
- Repair completed with OEM parts where required.
- 1-year labour warranty issued.
Repair vs replace — the 50% rule
| Scenario | CANRO recommendation |
|---|---|
| Leak from fitting on boiler <6 years old | Repair |
| T&P valve discharging on any boiler | Repair valve, investigate pressure |
| Circulator pump seal leak on boiler <12 years | Repair (replace pump) |
| Heat-exchanger crack on boiler in warranty | Warranty replacement of HE |
| Heat-exchanger crack on boiler 12+ years out of warranty | Replace boiler |
| Multiple small leaks on 15+ year boiler | Replace |
| Repair cost > 50% of replacement cost | Replace |
Brands of high-efficiency boilers we service
Navien, NTI, IBC, Viessmann, Vaillant, Triangle Tube, Laars, Weil-McLain, Burnham, Slant/Fin, Baxi, Lochinvar, Raypak, Bosch, Lennox, Carrier, Rheem, Bradford White, Bryant, Trane.
Cities we service in Metro Vancouver
Vancouver, Burnaby, Surrey, Richmond, North Vancouver, West Vancouver, Coquitlam, Port Coquitlam, Port Moody, New Westminster, Delta, Langley, Maple Ridge, Pitt Meadows, White Rock, Anmore, Belcarra.
High-Efficiency Boiler Leak Repair in Metro Vancouver
Call (604) 359-1081 for same-day dispatch. TSBC-licensed. OEM parts for all brands.
📞 (604) 359-1081 Request a quoteFrequently asked questions
Q: Are high-efficiency boiler leaks an emergency?
A: Yes — water can damage flooring, drywall, and electrical components fast. Shut off the water supply and call CANRO same-day.
Q: How much does a high-efficiency boiler leak repair cost?
A: $185-$420 for fittings/T&P. $350-$650 for pump seal. $1,400-$3,800 for heat exchanger (or warranty). Free quote after diagnostic.
Q: Will CANRO service all brands of high-efficiency boilers?
A: Yes — Navien, NTI, IBC, Viessmann, Vaillant, Triangle Tube, and 14+ other brands.
Q: Do I need a TSBC-licensed gas fitter?
A: Yes — BC code requires all gas-appliance work to be done by a TSBC-licensed Class-A gas fitter. CANRO is.
Q: How long does the repair take?
A: Most same-visit. Specialty parts may take 24-72 hours to source.
Q: Will my warranty be voided?
A: No — using a TSBC-licensed installer (CANRO) preserves all manufacturer warranties.
About CANRO
CANRO Heating & Cooling is a Burnaby-based HVAC and gas-fitting company serving Metro Vancouver since 1999. TSBC Class-A gas-fitting licence. Red Seal HVAC technicians. WorkSafeBC registered. 4.9★ rating across 85+ verified Google reviews. Authorized service contractor for Navien, NTI, IBC, Viessmann, Triangle Tube, Laars, Weil-McLain, Burnham, Slant/Fin, Baxi, Lochinvar, Raypak, Bosch, Lennox, Carrier, Rheem, Bradford White, Bryant, Trane, and Vaillant.
CANRO Heating & Cooling — TSBC Class-A gas-fitting licence · Red Seal HVAC certified · WorkSafeBC and liability insured · 4.9★ from 85+ Google reviews · Serving Metro Vancouver since 1999.
