What replacing a cracked or clogged condensate trap costs on a Tsawwassen high-efficiency boiler, and why a small drip matters.
Tell us what you need—we’ll call you back fast.
Quick answer
Condensate trap replacement on a Tsawwassen high-efficiency gas boiler falls under a typical boiler repair, generally $250-$1,800 with most jobs landing between $400 and $900, plus a $90-$150 diagnostic visit if booked separately. That's a 2026 ballpark from public market data, not a fixed quote - CANRO's certified gas technicians confirm the exact cost once they've traced whether the trap itself, the drain line, or a blockage further downstream is behind the fault code or leak.
Need a licensed gas fitter for your gas boiler? Call CANRO at (604) 359-1081 — residential natural-gas heating and hot water across Metro Vancouver since 1999.
High-efficiency condensing boilers extract so much heat from the combustion gases that water vapour condenses out as liquid, which is mildly acidic and needs to drain away safely. The condensate trap holds a small water seal that lets that condensate drain out while blocking flue gases from escaping backward through the drain line - similar in principle to the trap under a sink, just built into the boiler's condensate system.
A cracked plastic trap, one clogged with the sludge that naturally forms in condensate over time, or a trap that's dried out from long periods without the boiler running, can all cause the same result: condensate backing up, a fault code on the boiler's display, or the boiler shutting down entirely rather than risk flue gases escaping through an unsealed trap.
| Item | Typical range |
|---|---|
| Condensate trap replacement or clearing (parts and labour) | $250-$1,800, most jobs $400-$900 |
| Diagnostic/service call, if separate | $90-$150 (credited toward the work) |
| Technician labour | $95-$165 per hour |
A trap that just needs clearing of sludge buildup sits at the low end. A cracked trap needing full replacement, or a drain line that also needs clearing or re-routing to fix a recurring backup, runs higher.
A failed condensate trap doesn't just mean a small puddle near the boiler - modern condensing boilers are designed to shut themselves down if the condensate system isn't working properly, since an unsealed trap could otherwise let flue gases escape into the mechanical room instead of venting outside. Repeated shutdowns tied to a condensate fault are worth addressing promptly rather than repeatedly resetting the boiler, since that just masks the underlying problem each time.
A boiler that keeps faulting out on the same code every few days is telling you something specific, not asking for another reset. Each shutdown also means the house goes without heat until someone notices and restarts it, which in a cold snap is worth avoiding rather than living with.
High-efficiency condensing boilers are common in Tsawwassen's newer construction, including Tsawwassen Shores and Tsawwassen Springs, where the condensate trap and drain line are more likely to be part of the system than on an older atmospheric-vent boiler. Homes in older Tsawwassen neighbourhoods near the water, often on crawl-space foundations because of the peninsula's high water table, sometimes have condensate drain lines that were routed with less fall than ideal, which can make sludge accumulation and slow drainage more of a recurring issue than in a newer, purpose-built mechanical room.
Safety note
A condensate trap keeps flue gases from escaping backward through the drain line on a high-efficiency boiler, so a failed trap is a combustion-safety matter, not just a drainage nuisance, and should be handled by a licensed gas technician. If you ever smell gas or exhaust near the boiler, leave the house and call FortisBC at 1-800-663-9911 from outside.
A clogged or cracked condensate trap, or a blocked drain line, is the usual cause. Repeatedly resetting the boiler without addressing the actual blockage or crack just delays the fix.
Often yes, if it's simply clogged with sludge rather than physically cracked. A technician checks the trap's condition before deciding which repair applies.
It's mildly acidic, which is why proper drainage matters, but the bigger safety concern is the trap's role in blocking flue gases from escaping backward if it fails.
Not typically - condensate traps are a feature of high-efficiency condensing boilers, which extract enough heat from combustion gases to produce liquid condensate in the first place.
A boiler that sits unused for a stretch, like over summer, can let the trap's water seal evaporate. Some systems need a quick check at the start of the heating season for exactly this reason.
Clearing a clogged trap is usually a short visit. Full replacement or drain line correction takes longer, especially if access to the boiler's base is limited.
Family-run, TSBC-licensed (gas LGA0043870 · boiler LBP0046450), serving Metro Vancouver homes since 1999. Residential, natural gas only.
Call (604) 359-1081 Email info@canroheat.ca“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.