What Happens in a Home Energy Audit?

Step-by-step guide to understanding your home's energy needs—and how it unlocks Greener Homes Grant rebates.

Published July 3, 2026 · 5 min read

Before you install a heat pump, solar panels, or insulation, a professional energy audit tells you exactly what your home needs. It's not just a walkthrough—it's a detailed analysis that can unlock access to up to $40,000 in Greener Homes Grant funding.

Here's what actually happens during an energy audit and why it matters.

Why Get an Energy Audit?

An energy audit answers a critical question: Where is your home wasting energy?

Without this information, you might install a massive heat pump when weatherization would solve 60% of your heating problems for 20% of the cost. Or you might overspend on a solar system when your home still leaks air and heat.

The audit creates a roadmap. And critically, the Greener Homes Grant (federal) requires a professional energy audit before you can apply. This is actually good news—it forces you to plan strategically instead of guessing.

The Energy Audit Process (Step-by-Step)

1

Initial walkthrough (15 minutes)

The auditor walks through your home, looking at:

  • Home age and construction type (what year built, materials)
  • Current heating/cooling systems (furnace, air conditioner, heat pump)
  • Insulation levels (attic, basement, walls)
  • Windows and doors (single-pane vs double-pane, condition)
  • Air leaks (cracks, gaps, poor seals)
2

Thermal camera scan (10 minutes)

Using an infrared camera, the auditor finds where heat escapes. Dark spots in winter = air leaks, poor insulation, or thermal bridges. This visual proof shows exactly where to focus retrofit efforts.

3

Blower door test (10 minutes)

A powerful fan temporarily covers your front door and depressurizes the home. This reveals air leaks that are impossible to spot by eye. The test measures how "tight" your home is—data that determines if you need major air sealing or just minor patches.

4

Energy bill review (5 minutes)

The auditor reviews your heating and electrical bills to estimate current energy consumption and costs. This becomes your baseline—later, you'll compare actual savings against this.

5

Report and recommendations (provided later)

You receive a detailed report showing:

  • Your home's current energy rating (EnerGuide score)
  • Where energy is lost (ranked by impact: air leaks, insulation gaps, inefficient heating)
  • Recommended upgrades in order of priority and ROI
  • Estimated costs for each upgrade
  • Estimated energy savings (in kWh and dollars)
  • Payback timeline for each measure
  • Greener Homes Grant eligibility and estimated rebate amount

What the Report Tells You

A good audit report looks something like this:

Example: A 1970s home in Vancouver

Current EnerGuide rating: 65/100 (average)
Annual heating cost: $2,400
Top priority: Air sealing (40% of heat loss) + Attic insulation (30%)
Recommended sequence:
1. Air sealing & weatherization: $3K cost, $600/year savings (5-year payback)
2. Heat pump: $11K cost → $1.2K/year savings (with CleanBC rebate: net $2K)
3. Solar: $18K cost → $1.8K/year savings (with BC Hydro rebate: net cost much lower)
Total Greener Homes Grant potential: $15K (covers ~50% of insulation + heat pump)

This tells you exactly what to do and in what order—avoiding expensive mistakes.

Cost & Time

Professional energy audits cost $400–$1,200 depending on home size and complexity.

Good news: Many Greener Homes grants reimburse the audit cost ($600 typical) after you complete the retrofit. So if you do the work, the audit is often free.

Time required: 45 minutes in-home, then 1–2 weeks for the detailed report.

Who Should Conduct Your Audit?

Look for auditors certified by:

Many HPCN-certified installers include energy audits free as part of their initial consultation. Start there.

Next Steps After Your Audit

  1. Review the report and ask your auditor to explain any unclear sections
  2. Get quotes from installers for the top 2–3 recommendations
  3. Check Greener Homes eligibility—if you qualify, apply for the grant before starting work
  4. Sequence your upgrades following the audit's priority order (not random guesses)
  5. Track your energy bills after each upgrade to confirm actual savings

Ready to schedule an energy audit?

Find an HPCN-certified auditor in your city—often free or low-cost if you commit to using their installation services.

Use our assessment tool →