Short answer
Okanagan AeroBarrier is based in Kelowna and seals new homes, multi-unit Part 9 builds and renovations across the city to a measured ACH50 target, usually in one day. The City of Kelowna has required Step 3 of the BC Energy Step Code for Part 9 homes since June 2021, with an airtightness test at completion. Builders going for Step 4 or Step 5, or a FortisBC rebate, book a seal so the number is known before the energy advisor tests.
What Kelowna asks for
The City of Kelowna has required Step 3 of the BC Energy Step Code for Part 9 homes since June 1, 2021. Every Step Code home needs an airtightness test at completion by your energy advisor. Builders aiming above Step 3, or at a FortisBC Step 4 or Step 5 rebate, usually add a mid-construction test too, and the City has run incentives toward that test in the past. Check kelowna.ca for what is current. The full breakdown is in Step Code airtightness.
Scheduling a seal in Kelowna
Kelowna jobs are the quickest for me to book because I do not have to batch travel around them. That matters most on rescue work, when a mid-construction or final test has come back over target and the drywall or finish trades are waiting. If you have a result in hand, call me and I will tell you on the phone whether a seal gets you there. How a rescue seal works.
The window is the same as anywhere: windows and exterior doors in, rough-ins inspected, ideally after insulation and before drywall. Drywall up still works. Flooring, cabinets and trim close it.
Infill, carriage houses and multiplexes
A lot of Kelowna work now is infill: carriage houses, duplexes, fourplexes and townhouse rows. Small units are the hardest to pass on ACH50 because the leakage is divided by a small volume. I seal those unit by unit, each with its own documented result. Multi-family air sealing.
Sources
Written by Sebastian Motora, owner-operator. Last reviewed October 7, 2026.