Energy Audits: Reducing Your Heating Costs

What an Energy Audit Measures

An energy audit builds a complete picture of a building's consumption: fuel type, billing history, envelope performance, air tightness, insulation levels, and the efficiency of heating, ventilation, and air conditioning systems. The goal is to pinpoint precisely where energy, and money, is being lost.

An energy audit on the South Shore or elsewhere in the region typically begins with a blower-door air infiltration test combined with a thermographic inspection, which reveals thermal bridges invisible to the naked eye: poorly insulated joints, badly sealed windows, or settled attic insulation.

The Most Cost-Effective Measures

Calculating the Payback Period

Every recommendation in the audit comes with a cost estimate, projected annual savings, and a payback period. This lets homeowners prioritize work according to their budget instead of undertaking everything at once.

A Particularly Relevant Issue in Laval and Greater Montreal

The residential stock of Laval and several Montreal neighborhoods includes a large share of buildings built before modern energy codes. These properties benefit especially from an audit, and are often eligible for provincial or municipal grant programs that reduce the net cost of the recommended work.

Available Financial Assistance Programs

Many homeowners don't realize that an energy audit is often the required first step to access provincial grant programs aimed at improving energy efficiency or replacing an oil or gas heating system with an electric solution. These programs sometimes cover a significant share of the recommended work's cost, which considerably shortens the real payback period on the investment.

It's important to have the audit done before starting any work: most programs require an initial report to establish the baseline, then often a second audit after the work to confirm the gains achieved and release the grant payment.

Beyond Savings: Comfort and Resale Value

A better-insulated, more airtight building also delivers year-round comfort gains: fewer drafts in winter, a more even temperature from room to room, and better air conditioning performance in summer. These improvements, documented in an audit report, also become a concrete selling point when the time comes to list the property.

Energy Audits for Condominiums

For a multi-unit building, the audit must account for common areas as much as private units: central heating, corridor ventilation, common-area lighting, and the building envelope as a whole. Savings achieved on common areas directly benefit the condo's operating budget and can ease pressure on contributions, an issue that ties directly into the planning done in the contingency fund study.

Dual-Fuel and Hybrid Heating Systems

Many Quebec properties combine a heat pump with an electric or gas backup system for the coldest days. The audit checks whether the switchover point between the two sources is set optimally, an often-overlooked setting that can leave the pricier backup system running far longer than necessary each winter.

Integrating the Audit into a Broader Maintenance Plan

An energy audit pairs well with a preventive maintenance plan: both approaches identify components to watch and allow investments to be staged coherently over several years rather than reacted to under pressure.