Now House Windsor 5
Design & Technology
Each house received an energy audit and was modeled to determine various energy reduction scenarios.
We will apply this base model to each home:
- Air sealing and insulation
- CFL and LED lights
- Low flow fixtures (shower head, toilet, aerators)
- ENERGY STAR refrigerator and front-loading washer
- Gas range and dryer.
The energy audit indicated an *EGH for the five houses ranging from 18–55. For energy modelling purposes, Now House chose a median EGH of 35. However, the base model improvements are predicted to bring all houses up to a minimum of 58% energy reduction. Outcomes and energy reductions are influenced by the number of occupants in the home and their awareness and actions relevant to energy use.
Model One
- Base Model +
- High efficiency hydronic forced air gas heating system
- High efficiency central A/C
- Heat Recovery Ventilator
Projected outcome:
- Energy reduction 62%
- GHG reduction 8 tonnes
Model Two
- Base Model +
- High efficiency forced air gas furnace
- High efficiency central A/C
- Heat Recovery Ventilator
- 2.1 kW solar photovoltaic system
Projected outcome:
- Energy reduction 63%
- GHG reduction 9.5 tonnes
- Net zero energy cost
Model Three
- Base Model +
- High efficiency hydronic forced air gas heating system
- High efficiency central A/C
- Heat Recovery Ventilator
- Solar thermal system
- 2.1 kW solar photovoltaic system
Projected outcome:
- Energy reduction 71%
- GHG reduction 10.7 tonnes
- Net zero energy cost
Model Four
- Base Model +
- High efficiency forced air gas furnace
- High efficiency central A/C
- Heat Recovery Ventilator
Projected outcome:
- Energy reduction 63%
- GHG reduction 8.1 tonnes
Model Five
- Base Model only
Projected outcome:
- Energy reduction 58%
- GHG reduction 7.7 tonnes
*EGH: EnerGuide for Houses is a Canadian standard measurement for home energy efficiency. On a scale of 0–100, higher scores indicate higher efficiency.