British Columbia · Energy · checked September 28, 2026

Combustion safety testing in Langley

A combustion safety test checks that your furnace, water heater and fireplace vent their exhaust outside instead of into the house, which matters most right before and after you tighten the house up. In the Vancouver area, the main heating energy is natural gas for 42% of households.

Get matched in Langley → The combustion safety and spillage check
A gloved hand inserting a combustion analyzer probe into a furnace flue pipe in a basement

Cost

Included with an evaluation

Natural gas heat

42%

Gas distributor

FortisBC

CO alarms required (existing homes)

No

How Langley is built

Langley's houses by when they were built Ten house shapes, one for each tenth of Langley's 42,165 houses. Before 1961: 4%, 1961–1990: 37%, 1991–2000: 18%, 2001 or later: 41%. Older houses glow hotter.
  • Before 1961 4%
  • 1961–1990 37%
  • 1991–2000 18%
  • 2001 or later 41%
Each house stands for one in ten of Langley's 42,165 houses (single-detached, semi-detached, row and duplex), drawn by when it was built. The glow shows the usual pattern: older houses tend to be leakier and less insulated. Snowfall scales with heating degree-days. Sources: Statistics Canada 2021 Census (table 98-10-0233-01), NRCan HOT2000 climate data.

Why it matters in Langley

In the Vancouver area, 32% of households heat mainly with a forced-air furnace, 31% with electric baseboards, 12% with a boiler and radiators and 5% with a heat pump; natural gas is the main heating energy for 42% of households and electricity for 39% (Statistics Canada, 2023).

The risk rises after air sealing: a tighter house plus a strong exhaust fan or dryer can pull exhaust back down a chimney. That's why advisors test for spillage during an evaluation and why it should be repeated after serious tightening.

The CO alarm rule in British Columbia

B.C. doesn't require CO alarms in existing homes; the province recommends them wherever there's a fuel-burning appliance, fireplace or attached garage, and the building code requires them in new homes.

What the check involves

  • Worst-case depressurization: exhaust fans and the dryer on, doors set to make the appliance room as negative as it gets.
  • A spillage and draft check at each appliance, with a CO reading.
  • A plan if anything fails: often a sealed-combustion appliance or a fix to the venting, done by a licensed gas or oil technician.

The combustion safety check in detail.

NRCan-licensed service organizations serving Langley

Energy advisors check for combustion spillage during an evaluation; fixing a venting problem is work for a licensed gas or oil technician.

Source: NRCan list of licensed service organizations, checked September 28, 2026. Call to confirm your street is covered and ask about wait times.

Programs in Langley

Provincial · needs an evaluation BC Home Energy Improvement Bonus $20 for every percentage-point your home improves — $750 minimum, $2,000 maximum — or $300 for any two upgrades Open

Combustion safety test in Langley: common questions

Are CO alarms required in Langley homes?

B.C. doesn't require CO alarms in existing homes; the province recommends them wherever there's a fuel-burning appliance, fireplace or attached garage, and the building code requires them in new homes.

Who does combustion safety testing?

Energy advisors check for spillage during an EnerGuide evaluation. Repairs to venting or appliances are done by a licensed gas or oil technician.

I have CO alarms. Isn't that enough?

Alarms warn you once CO is already in the house. A spillage test finds a venting problem before it produces CO.

Combustion safety test near Langley

Combustion safety test in Surrey17 kmCombustion safety test in Abbotsford21 kmCombustion safety test in Coquitlam26 kmCombustion safety test in Delta30 kmCombustion safety test in Burnaby32 km All 70 cities →

Sources

Checked September 28, 2026. Census figures are for the municipality (British Columbia); climate data is NRCan's HOT2000 station Pitt Meadows (14 km away).

Get matched with a registered advisor in Langley

Tell us your postal code and what you’re planning. We’ll connect you with one licensed service organization serving your area. No spam, no shared lead lists.

Email us what you’re planning, your postal code and the type of building (a house, a duplex or triplex, or a larger multi-unit building) — we’ll reply with registered service organizations for your area and which rebates apply.

Email dave@clickshift.ca

This inbox is answered by a person. Participating advisors pay us a referral fee — you pay nothing, and it never affects the directory.