Converting from a tank to a tankless water heater in East Vancouver usually comes down to gas line capacity, venting, and where the unit can go.
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Quick answer
A tank-to-tankless conversion means removing the storage tank, installing a tankless gas water heater, and adapting the gas line and venting to match the new unit's higher instantaneous demand. In East Vancouver's older character homes this is almost always the deciding factor: gas lines sized for a tank often need upsizing for tankless. Expect a ballpark of $3,500 to $7,500 for the tankless install itself, confirmed after a home assessment.
Need a licensed gas fitter for your tankless water heater? Call CANRO at (604) 359-1081 — residential natural-gas heating and hot water across Metro Vancouver since 1999.
East Vancouver is full of Craftsman houses, Vancouver specials and character homes built from the 1910s through the 1950s, many now updated with a basement suite or laneway house added over the years. That kind of layered growth is exactly where tank-to-tankless conversions come up most: a household that's outgrown its original tank's recovery time, or a homeowner adding a laneway suite who needs the main house and the suite to both have reliable hot water without running two full tank systems.
Some homeowners are also simply replacing an aging tank that's near the end of its service life and would rather move to tankless at that point than buy another tank.
This is where East Vancouver's housing age matters most. A gas line run decades ago to feed a tank water heater and a furnace was sized for that original combination, not for a tankless unit's higher instantaneous draw. Undersizing shows up as reduced water temperature when the furnace or another gas appliance runs at the same time. A licensed gas fitter measures the existing line, calculates the combined BTU load of everything on it, and upsizes the run where needed as part of the conversion, not as an afterthought discovered later.
| Step | What happens |
|---|---|
| Assessment | Technician reviews gas line size, venting path, and mounting location |
| Written quote | Scope and ballpark confirmed before work starts |
| Permit | Gas permit pulled through the City of Vancouver where required |
| Removal | Old tank disconnected and removed |
| Installation | Tankless unit mounted, gas line and venting connected |
| Testing | Combustion, gas pressure and hot water flow tested |
| Walkthrough | Homeowner shown shutoffs, controls and basic maintenance |
A straightforward tank-to-tankless swap where the gas line is already adequate can often be completed in a day. Add gas line upsizing or a venting relocation, and the project typically runs longer since that work involves more than swapping one appliance for another. Your written quote will lay out which category your home falls into once the assessment is done, so there's no surprise mid-job.
Safety note
Gas line and venting work must be done by a licensed gas fitter; if you ever smell gas during or after the conversion, leave the home and call FortisBC at 1-800-663-9911 from outside.
Not necessarily in the same spot. Tankless units mount on a wall, so the technician looks at wall space and venting clearance near the original location or nearby, rather than assuming the tank's footprint works as-is.
Sometimes, if the combined load of the tankless unit plus your furnace or boiler exceeds what the current meter and line were sized for. This gets checked during the assessment, not guessed.
Many East Vancouver homeowners with a laneway suite consider it, since it can help meet hot water demand across both units, though the right setup depends on your specific layout and gas capacity.
Many tankless units are commonly cited as lasting longer than a typical storage tank when properly maintained, though that's a general range, not a guarantee, and depends on water quality and maintenance.
Yes, gas water heater installations typically require a gas permit through the City of Vancouver, and CANRO pulls that as part of the project where applicable.
Periodic descaling is the main one, since mineral buildup on the heat exchanger affects performance over time. How often depends on your water hardness and usage.
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