Champlain Heights homes built in the 1970s often need gas line and venting upgrades before a tankless water heater can go in, and CANRO explains why.
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Quick answer
Because Champlain Heights homes were largely built in the 1970s for a standard tank water heater, a tankless installation here usually involves checking the gas supply line and adding new venting rather than a simple one-for-one swap. A licensed gas fitter needs to assess the existing infrastructure before the new unit can be sized and installed correctly.
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Because so much of Champlain Heights was developed within the same 1970s building window, we see a fairly consistent starting point on tankless installs here: original gas piping sized for a tank and a furnace or boiler, and no existing sidewall vent suitable for a tankless unit. That consistency actually makes planning easier, since we know roughly what to expect before we even arrive, though every home still gets its own on-site assessment rather than an assumption.
On flatter land like this neighbourhood sits on, venting placement is usually more straightforward than on a sloped lot, since there is less concern about termination height relative to grade or nearby walkways, but code clearances from windows and doors still apply regardless of the lot's slope.
We walk through all of this before quoting anything, because a tankless install scoped without checking gas and venting first tends to run into surprises partway through the job, which nobody wants.
| Scope | What's involved | Ballpark range |
|---|---|---|
| Straightforward swap, adequate gas and venting already present | Unit and connection only | Lower end of range |
| Gas line upsizing required | Additional piping and labour | Mid range |
| New venting plus gas upsizing | Full scope of work | Higher end of range |
As a ballpark only, tankless installation in this area typically runs $3,500 to $7,500, with the specific number depending on how much of the existing infrastructure can be reused versus modified. We confirm the real number after seeing your home, not before.
Safety note
If you ever smell gas (a rotten-egg odour) or suspect a carbon monoxide problem, leave the home right away, do not flip switches or light anything, and call FortisBC at 1-800-663-9911 from outside before calling anyone else. Any gas connection, venting change, or pressure work on a boiler or water heater in BC must be done by a Technical Safety BC licensed gas fitter; CANRO carries gas licence LGA0043870 and boiler licence LBP0046450.
Very likely, since the original gas piping in homes from this era was typically sized for a standard tank, not the higher instantaneous draw of a tankless unit. We check this as part of the initial assessment.
Somewhat, since there is less concern about termination height relative to grade compared with a sloped lot, though code clearances from windows and doors still have to be respected regardless.
Sometimes, but tankless units vent differently than tanks, so the location that worked for your old tank may not have a suitable nearby exterior wall for the new vent termination. We assess this on site.
Based on actual simultaneous hot water demand, including fixtures used at the same time and any secondary suite, rather than a generic one-size recommendation.
In some cases the gas utility needs to upgrade the meter itself, which is a separate step from the piping inside your home. We identify this during the assessment so it does not come as a surprise mid-installation.
Leave the home immediately and call FortisBC at 1-800-663-9911 from outside before doing anything else.
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