A boiler replacement quote is built from equipment sizing, venting and gas line work, labour, and site-specific factors, not a single flat number.
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Quick answer
A gas boiler replacement quote is built from several layered factors: correctly sizing the new unit to the home's actual heat loss, the condition of existing venting and gas piping, any code-related upgrades the install triggers, and the labour required for the specific site. As a ballpark, not a quote, boiler replacement in Metro Vancouver commonly runs $7,500 to $15,000 or more depending on these factors, with a full boiler install (new system, no prior boiler) commonly running $6,500 to $14,000 or more. A firm number always follows an in-person assessment.
Need a licensed gas fitter for your hot water / boiler? Call CANRO at (604) 359-1081 — residential natural-gas heating and hot water across Metro Vancouver since 1999.
Before any pricing conversation, a technician needs to establish how much heat the home actually requires, based on square footage, insulation, window count, ceiling height, and how the home is zoned. An oversized boiler short-cycles and wastes fuel, while an undersized one struggles to keep up on the coldest days of the year. In older Vancouver-special and character homes, this calculation also has to account for cast-iron radiators, which behave differently than baseboard or in-floor systems, and for additions or renovated spaces that may not match the original heat-loss profile of the house.
This step is why a phone quote is never reliable for a boiler replacement. Two homes of the same square footage can need meaningfully different equipment depending on insulation, orientation, and how exposed the property is to Metro Vancouver's damp winters.
Modern condensing boilers vent differently than older atmospheric units, often requiring new PVC venting run to an exterior wall rather than relying on an existing chimney. If a chimney was previously shared with a water heater, removing the boiler from it can affect how that chimney performs and may require additional work. The gas line itself is inspected for size and condition, since older piping sized for a smaller appliance may need upsizing to properly supply a new unit. All of this venting and gas work has to meet current code and is inspected accordingly, which is reflected in the quote.
| Line item | Why it varies | What to ask about |
|---|---|---|
| Equipment | Different efficiency tiers and brands | Ask what model and efficiency tier is quoted |
| Venting | Reusing vs. replacing existing venting | Ask if the existing vent is being reused or replaced |
| Labour | Access difficulty, mechanical room location | Ask what's included if unexpected issues are found |
| Permits | Municipality-specific permit costs | Confirm whether permit cost is included or separate |
A lower number is not automatically a better deal if it leaves out permit fees, venting upgrades, or disposal of the old unit. A written, itemized quote lets you compare apples to apples between contractors.
Book an in-person assessment rather than relying on a phone estimate, have the age and rough condition of your current system ready to describe, and ask each contractor for a written, itemized quote so you can compare fairly. Remember the published ballparks are a starting point for budgeting, not a substitute for a site visit, since Metro Vancouver's mix of older character homes and newer builds means the final number depends heavily on your specific mechanical room and venting situation.
Safety note
Boiler installation involves gas piping, venting, and pressure-vessel work that must be completed by a Technical Safety BC licensed gas fitter; CANRO holds gas licence LGA0043870 and boiler licence LBP0046450. If you ever smell gas during or after an installation, leave the home and call FortisBC at 1-800-663-9911.
A boiler needs to be sized to your home's actual heat loss and matched to your existing venting and gas line condition, none of which can be assessed accurately without seeing the property.
Not necessarily. A lower number that leaves out permit fees, venting upgrades, or disposal often ends up costing more once those items are added later.
A first-time install into a home without existing boiler infrastructure often needs more new venting and gas line work, while a replacement can sometimes reuse existing infrastructure if it's still up to code.
It depends on the contractor; always ask specifically whether permit and inspection fees are included in the written quote or billed separately.
They're a general budgeting starting point based on typical Metro Vancouver installs, not a quote; your actual price depends on sizing, venting, and site access confirmed during an assessment.
A reputable installer includes removal and disposal of the old unit in the quote; confirm this is included before work begins.
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