Killarney homeowners renovating a post-war bungalow often ask about tankless water heaters, and CANRO sizes and installs them with proper venting and gas supply.
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Quick answer
A natural gas tankless water heater in a Killarney home heats water on demand rather than storing it, and installation depends on confirming the existing gas line and meter can supply the unit's peak draw, planning a compliant venting route to the exterior, and sizing the unit to the household's actual simultaneous fixture use. Killarney's post-war bungalows often have smaller original gas services, so checking supply capacity before committing to a model is one of the first steps in any tankless conversation here.
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Tankless conversations in Killarney tend to come up during a broader renovation, often when a basement suite is being added or a bathroom is being expanded and the existing storage tank no longer has the space or capacity for the household's new hot water needs. Homeowners also like that a tankless unit frees up floor space in what is often a fairly compact mechanical room in these older bungalows.
The limiting factor we run into most often in this neighbourhood is gas supply. Many Killarney homes still have the original, smaller-capacity gas meter and service line sized decades ago for a furnace and a standard tank, and a tankless unit's higher peak draw sometimes requires upsizing that line before installation.
Before quoting a tankless installation, we check the home's existing meter capacity and the size of the branch line feeding the mechanical room against the specific unit's maximum gas draw. If the existing supply falls short, upsizing the line is a necessary part of the job rather than an optional upgrade, and it changes the overall cost.
Sizing depends on how many fixtures could realistically run hot water at once, not just the number of bathrooms in the house. A bungalow with a single bathroom and a basement suite bathroom added later needs a unit sized for both running simultaneously if that is a realistic pattern for the household, or two smaller dedicated units if the suite is rented separately.
| Situation | Approach |
|---|---|
| Single-family, one to two bathrooms | One correctly sized unit |
| Bungalow plus basement suite | Larger single unit or two dedicated units |
| Renovation adding a second bathroom | Resize based on new total fixture count |
Venting placement needs to respect required clearances from windows, doors, and neighbouring walls, which can be a tighter fit on some of Killarney's narrower lots than on larger properties elsewhere in the city. A tankless install here generally runs in a ballpark of $3,500 to $7,500, and that is a ballpark, not a quote; gas line upsizing moves that number, and a written estimate follows an on-site assessment.
Safety note
If you smell gas, hear a hissing sound near the boiler, water heater, or gas line, or notice a yellow or lazy burner flame, soot, or a stale, headachy feeling near the mechanical room, leave the house right away and call FortisBC at 1-800-663-9911 from a safe location before doing anything else. Gas piping, venting, and combustion equipment must only be installed or serviced by a Technical Safety BC licensed gas fitter.
It depends on the meter's rated capacity versus the tankless unit's maximum draw; many older Killarney homes need an upgrade, which we confirm during the site assessment before quoting.
Often yes, but venting needs a clear route to an approved exterior termination, which can require some routing work depending on where the mechanical room sits relative to an outside wall.
Yes, either through a larger single unit sized for combined peak demand or two separate dedicated units so each household controls its own hot water.
It varies based on how much of the line needs replacing and the routing involved, so it's confirmed as part of the written estimate after the on-site assessment rather than a flat add-on figure.
Periodic descaling and a check of the venting and intake are recommended, particularly in areas that don't have naturally soft water, though Metro Vancouver's municipal supply is relatively gentle on these units.
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