Comparitive Running Costs
(Data supplied by Sustainable Energy Authority)
The actual running costs of a system will depend on a range of variables. These include:
- the size of your heater
- whether it is sized correctly for the area you are trying to heat
- operating temperature
- hours of operation
- the energy efficiency and size of your home
- how you use your heating system
Figures based on:
- NatHERS Thermal Simulation Program for a typical new home with R2.5ceiling insulation and R1.0 wall insulation in Melbourne
- 24 hours heating to 18°C for in-slab heating; 8 hours heating to 21°C for all others
- Tariffs current at April 2001-GD 13.0c/kWh, natural gas 0.95c/MJ, LPG 70.0c/lt, wood $175/tonne. Supply charges not included.
- Costs for reverse cycle air-conditioners based on average GD electricity tariff.
- For an energy smart home reduce costs by 30%
- For every 1°C increase in operating temperature, increase costs by 15%; for 24 hour heating, double these costs (except in-slab)
