An energy audit finds where your home leaks energy and money, then tells you which fixes give the best return. It's the smart first step before spending on efficiency upgrades or qualifying for rebates.
DIY assessment
You can spot a lot yourself: feel for drafts around doors, windows, and outlets; check attic insulation depth; look for an old furnace or water heater; and review your bills for seasonal spikes. These point to the obvious waste — air leaks and thin insulation usually top the list.
Professional audit
A professional energy advisor uses a blower-door test to measure air leakage and infrared cameras to find missing insulation and leaks you can't see, then provides a report and rating. In Canada, a registered EnerGuide audit is often required to access certain efficiency rebates and grants.
Act on the results
Audits typically find that air sealing and insulation give the biggest bang for the buck, ahead of new windows or equipment. Tackle the high-return, low-cost items first, and use the audit to plan and fund bigger upgrades with available rebates.