Radiant floor sizing in Port Moody has to account for elevation on top of the usual boiler-water temperature-zoning balance — a slab loop in a hillside Heritage Mountain home faces more downward heat loss through an exposed foundation wall than a similar loop on a sheltered lower lot near the inlet.
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Radiant floor sizing in Port Moody has to account for elevation on top of the usual boiler-water temperature-zoning balance — a slab loop in a hillside Heritage Mountain home faces more downward heat loss through an exposed foundation wall than a similar loop on a sheltered lower lot near the inlet.
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Boiler output, loop water temperature, and zoning get sized together, and floor covering shapes all three — tile and stone conduct heat efficiently, while carpet and thick engineered flooring insulate against it.
A heritage-era Port Moody home near the water sizes its radiant retrofit differently than a new hillside build, given how differently the two envelopes were constructed.
Heritage-era homes near the historic downtown sometimes have less basement insulation than current standards, which matters more for a radiant retrofit than for baseboard, since the loop relies on the slab or subfloor holding consistent temperature rather than just blowing warm air into the room.
| Zone type | Why it's separated |
|---|---|
| Basement rooms on exposed hillside foundations | Higher heat loss than upper floors, usually needs its own zone |
| Tile bathrooms and kitchens | Efficient heat transfer, often lower supply temperature |
| Carpeted upper-floor bedrooms | Insulates against the loop, may need adjusted spacing |
| Rooms with inlet-facing windows | Wind exposure can shift heat loss through the day |
Ballpark, not a quote: a boiler install feeding a radiant floor system typically runs $6,500–$14,000+. The City of Port Moody building department handles the mechanical permit.
If you ever smell gas near a boiler, water heater, or venting terminal, leave the house immediately, do not operate switches or the equipment, and call FortisBC at 1-800-663-9911 from outside before doing anything else. All gas connection, venting, and combustion-air work must be completed by a Technical Safety BC licensed gas fitter; CANRO carries gas licence LGA0043870 and boiler licence LBP0046450.
A radiant floor site visit in Port Moody typically starts in the basement or lowest level, checking foundation exposure on hillside lots and how much insulation is already in place. Heritage-era homes near the water sometimes have less basement insulation than current standards, which matters more for a radiant retrofit than for baseboard heat, since the loop depends on the slab or subfloor holding a steady temperature rather than blowing warm air into the room.
Safety note
If you ever smell gas near a boiler, water heater, or venting terminal, leave the house immediately, do not operate switches or the equipment, and call FortisBC at 1-800-663-9911 from outside before doing anything else. All gas connection, venting, and combustion-air work must be completed by a Technical Safety BC licensed gas fitter; CANRO carries gas licence LGA0043870 and boiler licence LBP0046450.
Hillside basements can face more exposed foundation-wall heat loss than sheltered lower lots, which factors into the loop's heat-loss calculation.
Often yes, but basement insulation and the boiler's ability to supply lower water temperatures need to be checked first, since older basements may have less insulation than current standards.
Basement rooms, especially on exposed hillside foundations, typically have a different heat loss profile than upper floors and benefit from independent control.
Yes — tile and stone conduct heat efficiently, while carpet and thick flooring often need tighter loop spacing or higher water temperature.
It depends on whether it can supply water at the lower temperature radiant loops need, sometimes via a mixing valve — this is checked before a retrofit is recommended.
Ballpark, not a quote: typically $6,500–$14,000+, depending on zone count and loop layout.
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