Energy Efficient House

What is energy efficient house? At least there are 3 concepts, according to Hydro Tasman. But, I think there are things missing for tropical typical house.
We'll discuss it later.

The 3 most important concepts are
1. Glass
An energy efficient house has larger windows facing north to capture the Sun's free solar energy.
North facing windows are the most important in your home. They can gain more heat during the day than they lose at night and make your home bright and cheerful.
Design them to admit sun’s warmth in Winter.
Appropriate width eaves can reduce overheating in Summer
South facing windows are also important but not from a heating point of view.
They are useful for admitting natural light and to allow cross ventilation during summer.

2. Mass

· Have plenty of mass to absorb and store the Sun's energy for use when the sun isn't shining!
3. Insulation
· Once your home is cosy and warm, adequate insulation will keep the heat from escaping