An indirect water heater has no burner of its own — it borrows heat from your boiler, so its cost is really a boiler-sizing and piping question.
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Quick answer
An indirect water heater doesn't have its own gas burner, so its real cost sits inside the boiler that feeds it: for a Vancouver home adding or replacing the boiler to run an indirect tank, expect roughly $6,500 to $14,000 or more installed, plus labour billed at $95 to $165 an hour for the tank and piping work itself. That figure is a ballpark from current 2026 market data rather than a fixed price — CANRO's certified gas technicians size the actual job after seeing your existing hydronic system and hot-water demand.
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.
An indirect water heater is a well-insulated storage tank with a coil or heat-exchange jacket inside it, plumbed into your boiler's hot water loop instead of having its own gas valve and burner. The boiler does the actual heating; the indirect tank just stores and delivers hot water on demand. That means the tank hardware itself is a modest line item — the number that actually swings the project is whether your existing boiler already has enough reserve capacity to run an indirect tank, or whether it needs to be replaced or upsized to carry the extra load.
| Scenario | Typical range |
|---|---|
| Existing boiler has spare capacity — add indirect tank and piping only | Labour at $95 – $165/hr, typically a one- to two-day job |
| Boiler needs replacing to carry the indirect tank load | $6,500 – $14,000+ for the boiler install, plus tank and piping labour |
| Municipal gas permit | $75 – $200 |
A large share of the boiler-heated homes CANRO sees in Vancouver are pre-war character houses in neighbourhoods like Kitsilano, Grandview-Woodland, and Dunbar, still running cast-iron radiators off a boiler that was sized decades ago purely for space heating, with no allowance for a hot water tank at all. When an owner wants to stop relying on a standalone gas water heater and consolidate everything onto one appliance, the boiler is often the limiting factor rather than the tank, especially in a house that's also picked up a basement suite or laneway unit adding extra hot-water draw.
Vancouver's reservoir-fed water is soft, with relatively low mineral content compared with well-supplied parts of the Fraser Valley, which is a genuine advantage for an indirect tank's coil — scale buildup inside the heat exchanger is a slower process here than in hard-water regions.
If your boiler is relatively young and was already sized with some reserve, adding an indirect tank can be the cheaper path to better hot water recovery than replacing an aging standalone gas tank on its own. If the boiler is original to a house built decades ago and is already working hard just to heat cast-iron radiators through a Vancouver winter, piling an indirect tank onto it usually isn't the right call — in that case the honest recommendation is to address the boiler first, sized correctly for both heating and hot water, rather than patch a tank onto a system that's already at its limit.
Because the boiler's condition and capacity decide most of the cost here, CANRO doesn't ballpark an indirect tank job over the phone — a technician needs to see the existing boiler nameplate, the radiator or baseboard layout, and current hot-water usage before pricing it. Have your address, the boiler's approximate age, and whether you have (or plan) a secondary suite ready when you call so the assessment can be scheduled efficiently.
Safety note
Any work on a gas-fired boiler involves combustion, venting, and pressurized hot water, and must be done by a Technical Safety BC licensed gas fitter — CANRO holds gas licence LGA0043870 and boiler licence LBP0046450. If you ever smell gas near the boiler or suspect a venting fault, leave the house and call FortisBC at 1-800-663-9911 from outside.
It depends on your boiler. If the boiler already has spare capacity, adding an indirect tank can be more economical over time than running two separate gas appliances. If the boiler needs replacing to carry the extra load, the project cost is closer to a full boiler install.
Sometimes, but many older boilers were sized purely for radiator heating with no reserve capacity, so a technician needs to check the nameplate rating and your hot-water demand before confirming it will work.
Yes — a suite adds simultaneous hot-water demand, so the tank and sometimes the boiler need to be sized with that extra draw in mind.
Yes, gas and plumbing work of this kind needs a City of Vancouver permit, typically in the $75 to $200 range, and the finished work is inspected.
Lifespan depends on water quality, maintenance, and manufacturer — ask your technician to point you to the manufacturer's documentation for your specific tank rather than relying on a general number.
It's disconnected and removed as part of the job; your technician will confirm whether the old gas line and vent need to be capped or repurposed.
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