Vernon Step Code Requirements

Current Step: 3 | ACH Target: 2.5 ACH50 | Climate Zone: 5 | Permit Office: vernon.ca/building

Current Requirements

Step 3 required for all new Part 9 residential buildings. Vernon sits at the colder end of Climate Zone 5 with more heating degree days than Kelowna or Penticton.

Climate Impact

The energy model demands more from the envelope in Vernon:

• Higher insulation values may be needed compared to Kelowna
• Better window performance on north-facing elevations
• Air leakage has a larger energy impact in colder climates
• Heat pumps and HRVs must be sized for colder operating temperatures

Permit Process

Standard BC framework: energy model with Vernon-specific weather data, blower door test at 2.5 ACH50, and as-built compliance report.

Key Tip

Same house plan will produce different energy model results in Vernon vs. Kelowna. Work with your energy advisor early to understand the differences.

FortisBC rebates apply. See our Step Code 3 guide or rebate calculator.