NTI boiler installation cost varies based on sizing, venting configuration, existing piping condition, and access, not a single fixed number.
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Quick answer
There is no single fixed price for an NTI boiler installation, since cost depends on the boiler's output size, whether the installation is a straightforward swap or requires new venting and piping, and site access. As a ballpark, not a quote, a boiler installation in Metro Vancouver generally falls in the range of $6,500-$14,000+, and a full boiler replacement including removal of the old unit typically runs $7,500-$15,000+. An in-home assessment from a licensed gas fitter is the only reliable way to get an accurate number for a specific home.
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The price of installing an NTI boiler is driven by far more than the appliance itself. Two homes with similar square footage can see meaningfully different quotes depending on whether the existing venting can be reused, whether the piping and zone valves need updating to suit a modern condensing system, and how accessible the mechanical room is for the crew doing the work.
Because of this, published cost ranges should always be treated as a starting point for a conversation with a technician rather than a number to expect exactly, and any final figure should come after an in-home assessment.
| Scope | Ballpark range (not a quote) |
|---|---|
| Boiler install | $6,500-$14,000+ |
| Full boiler replacement | $7,500-$15,000+ |
| Tankless water heater install (if considered alongside) | $3,500-$7,500 |
These ranges reflect the variability described above and are provided as a general starting point rather than a fixed price. Homes requiring significant venting rework, piping updates, or difficult access will typically land toward the higher end, while a straightforward like-for-like swap with existing compatible venting tends toward the lower end.
A licensed technician assessing a boiler installation will typically look at the home's heat loss and hot water demand, the condition and routing of existing venting, the state of the piping and zoning, mechanical room access, and any condensate drainage requirements. This assessment is what allows a firm quote to be provided rather than a general estimate, and it is the only reliable way to know what a specific home will cost.
In Metro Vancouver, older character homes with chimneys built for a non-condensing furnace or boiler often need new sidewall venting when switching to a condensing NTI unit, which is one of the more common cost drivers seen in this region specifically.
Rebate and financing programs for high-efficiency gas equipment are set by FortisBC, CleanBC, BC Hydro, and the Government of Canada, and eligibility criteria change over time. The Canada Greener Homes Grant program has closed, though the Greener Homes Loan and various FortisBC or CleanBC programs may still apply depending on the specific equipment and home. Homeowners should confirm current eligibility directly with the program rather than relying on older information, since no specific rebate amount should be assumed.
Safety note
Any boiler installation or replacement involving gas piping, venting, or combustion appliances must be performed by a Technical Safety BC licensed gas fitter and permitted through the local municipality. If you ever smell gas during or after an installation, leave the home and call FortisBC at 1-800-663-9911.
Quotes vary based on how each contractor scopes venting, piping, and condensate work, and whether they include full removal of the old system, so it is worth asking what is included in each quote.
No, an oversized boiler can lead to short cycling and reduced efficiency. Correct sizing based on an actual heat loss calculation generally performs better than choosing a larger unit for margin.
Often yes, since condensing boilers typically vent through PVC sidewall piping rather than a traditional chimney, though a technician can confirm what your specific home requires.
A phone conversation can give a general ballpark, but an accurate quote requires seeing the mechanical room, existing venting, and piping in person.
Rebate programs from FortisBC, CleanBC, and other bodies change over time and have specific eligibility criteria, so it is best to confirm current programs directly rather than assume a fixed amount.
A straightforward swap with compatible venting can often be completed in a day, while installations requiring new venting or piping updates take longer, which a technician can estimate during the assessment.
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