Last updated: May 28, 2026 · CANRO Heating & Cooling, TSBC Class-A licensed since 1999.
Direct Answer
CANRO is an authorized service contractor for Lochinvar boilers across Metro Vancouver. TSBC Class-A licensed gas fitters, OEM parts in stock, same-day dispatch where possible. Typical Lochinvar leak repair: $185–$1,400. Heat-exchanger warranty replacement at zero charge if still in coverage. Call (604) 359-1081.
Water leaking from your boiler?
Shut off the water supply. Call CANRO — TSBC-licensed, same-day dispatch where possible.
📞 (604) 359-1081Lochinvar is one of the most-installed boiler brands across Metro Vancouver — and like every brand, the most common failure mode in years 8+ is a water leak. CANRO services Lochinvar boilers daily across Vancouver, Burnaby, Surrey, Richmond, North Vancouver, and surrounding cities. Our trucks carry OEM Lochinvar service parts.
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 Lochinvar boiler leak points
- Heat exchanger — Lochinvar's service-bulletin history is checked at every diagnostic.
- Lochinvar circulator pump seal — pump-specific OEM seal kit in our trucks.
- Expansion tank — bladder rupture is the #2 cause of Lochinvar leaks past year 8.
- Auto-air-vent — small but common drip source.
- Pressure relief valve — discharge when expansion-tank pressure is low.
- Condensate trap — Lochinvar-specific trap part on most condensing models.
- DHW plate heat exchanger (combi models) — scaling failure mode in hard-water areas.
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 |
Lochinvar warranty considerations
- Heat-exchanger warranty: Lochinvar typically covers HE 10-15 years (registered installs).
- Parts warranty: 2-5 years on most components.
- CANRO registers every Lochinvar install in the homeowner name. Call us with your serial number to confirm warranty status.
OEM Lochinvar parts CANRO stocks
- Circulator pumps and seal kits
- Expansion tanks
- T&P relief valves
- Auto-air vents
- Condensate trap assemblies
- Pressure sensors and switches
- Common gas valves and igniters
How CANRO diagnoses a Lochinvar leak
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 |
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.
Cities we service Lochinvar boiler leaks in
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.
Lochinvar Boiler Leak Repair
Call (604) 359-1081 for same-day diagnostic. TSBC-licensed. OEM Lochinvar parts in truck.
📞 (604) 359-1081 Request a quoteFrequently asked questions
Q: How fast can CANRO repair a Lochinvar leak in Metro Vancouver?
A: Most leaks diagnosed and repaired on the same visit. Common parts in truck. OEM-specific parts sourced from local depots within 2-24 hours.
Q: Is my Lochinvar still under warranty?
A: Lochinvar typically covers heat exchanger 10-15 years and parts 2-5 years on registered installs. CANRO checks warranty status during onsite diagnostic.
Q: What if my Lochinvar heat exchanger is cracked?
A: If under warranty: $300-$600 labour, HE part covered by manufacturer. Out of warranty: $1,400-$3,800 — boiler replacement often makes more sense at this point.
Q: Does CANRO carry Lochinvar parts?
A: Yes — common Lochinvar service parts in every truck (pumps, expansion tanks, igniters, gas valves). Specialty parts via OEM depots in 2-24 hours.
Q: Will the repair be warrantied?
A: 1-year labour warranty on every CANRO repair plus manufacturer parts warranty.
Q: Should I repair or replace?
A: Depends on age and repair cost. CANRO’s 50% rule: if repair exceeds 50% of replacement cost AND boiler is past lifespan midpoint, replace. We provide written recommendations.
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.
