How a Vancouver Special's finished basement suite in Richmond changes water heater sizing and venting versus the upper unit.
Tell us what you need—we’ll call you back fast.
Quick answer
A Vancouver Special in Richmond, the boxy two-storey-over-basement style common from the mid-1960s through the 1980s, was almost always built with a full basement, and many have since had that basement finished as a legal or informal suite, which raises total hot water demand well beyond what the original single-family design accounted for. Sizing the water heater — or deciding whether to add a second unit for the suite — usually matters more here than in most other housing types, since these basements sit below the water table's more forgiving depth found elsewhere in Richmond.
Need a licensed gas fitter for your gas water heater? Call CANRO at (604) 359-1081 — residential natural-gas heating and hot water across Metro Vancouver since 1999.
Where a Vancouver Special's basement has been converted into a suite, the household now effectively runs two kitchens and at least two bathrooms off water heating equipment that may have been sized decades ago for a single household. A larger single tankless unit sized for combined peak demand is one option; a dedicated second water heater serving just the suite, on its own line and meter if the property has one, is another. Which makes more sense depends on whether the suite is legally registered and separately metered, and on the existing gas line's spare capacity.
Vancouver Specials built through Richmond's fastest growth years typically have a full basement with a utility room sized for the era's standard 40-gallon tank, atmospheric venting through a shared chimney with the furnace, and gas piping that hasn't been touched since original construction. Any replacement means checking that shared chimney's sizing against whatever combination of appliances now vents through it, since removing a tank in favour of a sealed-combustion tankless unit changes the flue's draft characteristics for whatever's left on it.
| Original 1970s Feature | Modern Consideration | Typical Fix |
|---|---|---|
| Shared chimney with furnace | Draft changes if one appliance is removed | Flue re-evaluated for remaining appliance(s) |
| Single water heater for whole house | Basement suite adds separate demand | Second unit or larger combined-capacity unit considered |
| Original 1970s gas piping | Age and capacity for added suite load | Line traced and re-assessed before new equipment |
If the basement suite is being formally legalized, the water heater setup often gets reviewed as part of that broader process through the City of Richmond, since a legal secondary suite has its own requirements around combustion air and, in some cases, separate metering. Even where the suite remains informal, any gas water heater work still requires a standard mechanical permit regardless of the suite's legal status.
Both the main house and any basement suite draw the same soft, treated Metro Vancouver reservoir water, so equipment longevity isn't a concern that differs between the two households the way it might on well-fed properties. That consistency simplifies the equipment conversation to sizing and venting rather than water quality.
Where a single original water heater is now serving both the upstairs household and a basement suite, running out of hot water regularly is a strong sign the equipment is undersized for current demand rather than simply failing, and a technician will usually recommend resizing at replacement rather than a like-for-like repair in that scenario. Where demand genuinely hasn't grown and the fault is isolated, a straightforward repair still makes sense.
Safety note
If you ever smell gas, hear hissing near a gas line, or suspect a venting or carbon-monoxide problem, leave the home right away and call FortisBC at 1-800-663-9911 from somewhere safe before doing anything else. All gas connection, venting, and combustion-safety work must be completed by a Technical Safety BC licensed gas fitter.
Not necessarily; a single larger-capacity unit sized for combined demand can work, but a dedicated second unit is common where the suite has its own gas meter.
A tank vents through the same chimney as the furnace in many original 1970s installations, so removing it changes the draft for whatever appliance remains on that flue.
It can, since a legal secondary suite has its own requirements around combustion air and sometimes separate metering, reviewed through the City of Richmond.
Often, especially if a suite was added after the original unit was installed, since demand has likely outgrown the original sizing.
Yes, both draw the same soft, treated Metro Vancouver reservoir water regardless of how the property is divided.
Family-run, TSBC-licensed (gas LGA0043870 · boiler LBP0046450), serving Metro Vancouver homes since 1999. Residential, natural gas only.
Call (604) 359-1081 Email info@canroheat.ca“Canro does an amazing job! Super professional and skilled with everything—boilers, furnaces, and AC. Always a pleasure working with them!”
“Five stars for Canro. We needed a replacement of a 30-year-old boiler. A new high-efficiency unit was installed—clean, professional work.”
“I can’t speak highly enough about George, who was recommended for a boiler service call for my parents’ home. George is excellent.”
25+ years keeping Metro Vancouver homes comfortable. Honest advice, upfront pricing, work that lasts.