ReNü Engineering Inc.

We are engineers who value building envelope performance and energy efficiency. ReNü offers energy auditing, energy modelling, and mechanical design services. Our designs are heavily influenced by the Passive House standards.

We are passionate about creating cost effective, low impact buildings with healthy and comfortable indoor environments.

We cater to clients across Canada and are licensed in BC, AB, YK, NT, & ON to engage in the practice of Engineering.


Stuart and his wife, Meg, embarked on a deep energy retrofit project, encompassing the complete renewal of a modest 1943 mature neighborhood wartime home into a healthy, comfortable, and energy efficient home. We performed most of the work ourselves, with support from our industry peers. We achieved an 80% reduction in energy consumption through exterior super-insulation and airtightness (0.7ACH@50Pa), as well as new highly efficient HVAC systems.

This blog chronicles the stages of our 5 year project. Below is a before/after comparison from May 2013 to September 2018:

Home as purchased, May 2013

Exterior Deep Energy Retrofit, October 2018.