Quebec · Energy · checked September 28, 2026

Combustion safety testing in Terrebonne

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 Montréal area, the main heating energy is natural gas for 5% and oil for about 2% of households.

Get matched in Terrebonne → 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

5%

Gas distributor

Énergir

CO alarms required (existing homes)

No

How Terrebonne is built

Terrebonne's houses by when they were built Ten house shapes, one for each tenth of Terrebonne's 34,470 houses. Before 1961: 5%, 1961–1990: 45%, 1991–2000: 16%, 2001 or later: 34%. Older houses glow hotter.
  • Before 1961 5%
  • 1961–1990 45%
  • 1991–2000 16%
  • 2001 or later 34%
Each house stands for one in ten of Terrebonne's 34,470 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 Terrebonne

In the Montréal area, 54% of households heat mainly with electric baseboards, 15% with a heat pump, 10% with a forced-air furnace and 6% with a boiler and radiators; electricity is the main heating energy for 71% of households, natural gas for 5% and oil for about 2% (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 Quebec

Quebec has no province-wide rule requiring CO alarms in existing houses: provincial rules cover larger multi-unit buildings, and for houses it's up to each municipality's by-law, so ask your local fire service.

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 Terrebonne

In Quebec, EnerGuide evaluations for existing homes run through the provincial Rénoclimat program; the organizations below are the ones NRCan lists for Terrebonne postal codes.

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 Terrebonne

Provincial · needs an evaluation Rénoclimat (Quebec) Quebec's audit-linked path: an assigned evaluator for $150 + tax (refunded except the tax when you receive assistance), then rebates for insulation, air sealing, doors and windows Open

Combustion safety test in Terrebonne: common questions

Are CO alarms required in Terrebonne homes?

Quebec has no province-wide rule requiring CO alarms in existing houses: provincial rules cover larger multi-unit buildings, and for houses it's up to each municipality's by-law, so ask your local fire service.

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 Terrebonne

Combustion safety test in Laval16 kmCombustion safety test in Montréal23 kmCombustion safety test in Longueuil28 kmCombustion safety test in Saint-Jean-sur-Richelieu54 kmCombustion safety test in Trois-Rivières109 km All 70 cities →

Sources

Checked September 28, 2026. Census figures are for the municipality (Quebec); climate data is NRCan's HOT2000 station L'Assomption (21 km away).

Get matched with a registered advisor in Terrebonne

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.

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