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 1855. 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

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  • 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

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  • 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

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  • 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

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  • 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

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  • 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 0100, higher scores indicate higher efficiency.