Surrey spans municipal-supply neighbourhoods and pockets of well water, and that split changes how often a tankless unit actually needs descaling.
Tell us what you need—we’ll call you back fast.
Quick answer
A natural gas tankless unit's warranty in Surrey is set by the manufacturer, generally covering the heat exchanger for an extended term and other components for less, with documented annual descaling required to keep coverage active. Most of Surrey runs on the regional reservoir system's relatively soft water, but some outlying and rural pockets, particularly toward the South Surrey and Langley boundary, still rely on private wells, and that difference matters enough for a tankless unit's descaling schedule that it's one of the first things worth confirming about your specific property.
Need a licensed gas fitter for your hot water / boiler? Call CANRO at (604) 359-1081 — residential natural-gas heating and hot water across Metro Vancouver since 1999.
Surrey's size means it isn't uniformly served the same way smaller municipalities are. The great majority of households draw from the regional reservoir system through Metro Vancouver's mains, which is relatively soft water, but there are still rural and semi-rural properties, particularly in parts of South Surrey and along the agricultural land reserve, that rely on a private well. A tankless heat exchanger scales considerably faster on hard well water than on the treated municipal supply, and that's the single biggest variable in how often descaling actually needs to happen.
If you're not sure which supply your Surrey property is on, that's worth confirming before assuming a standard annual descale is enough.
| Record | Why to Keep It |
|---|---|
| Descale invoices with dates | Direct proof the maintenance condition was met |
| A water hardness test, if on a well | Justifies a more frequent descaling schedule if scale is ever disputed |
| Manufacturer registration, if required | Activates full coverage on some product lines |
| Installation invoice with licence numbers | Confirms licensed, code-compliant work |
We check the model and serial against current terms, confirm whether your property is on municipal or well water, and review descaling history before pointing to a cause. On well water especially, reduced flow is more often scale than a genuine fault.
Defects within the covered term are handled as a parts claim with labour quoted separately. Outside warranty, a new tankless install is ballparked at $3,500–$7,500 — a ballpark, not a quote, since gas line and venting specifics at your address affect the final number.
Safety note
If you ever smell gas near a boiler, tankless unit, or water heater, leave the home immediately and call FortisBC at 1-800-663-9911 from a safe location before doing anything else.
Check your property information or ask us — we can usually confirm this quickly and it directly affects the descaling schedule we'd recommend.
Yes, though less urgently than on well water. Most manufacturer terms still specify at least an annual flush regardless of supply source.
It can be, especially if you're on well water. We'd recommend a service visit soon, both to assess current condition and to get a maintenance record established.
Yes — higher hot water demand means more water passing through the heat exchanger, which can call for more frequent descaling regardless of water source.
It can help on hard well water specifically, though it's a separate system decision from the tankless unit itself — we can discuss whether it makes sense for your property.
Call us for a diagnostic visit — we check flow performance and heat exchanger condition directly rather than guessing from symptoms alone.
A water hardness test, either through a lab or a basic kit, gives a concrete number to base the schedule on rather than relying on a generic annual assumption for your specific Surrey property.
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.