Hot Water Cost Calculator

Ever wondered how much your hot water is costing you? Or how much you could save if you upgraded your system and/or changed tariff?

To find out, simply enter your usage details below and select the types of hot water system and/or tariff you would like to compare, then press 'Calculate'.

There are a variety of hot water systems and tariffs to choose from. We recommend you ask your hot water supplier about the best combination for your specific needs.

Your Household Details


Number of people living in your home
Total number of showers taken per day
Average shower duration (minutes)
Showerhead type1
Total number of baths taken per day
Clothes washing temperature

If simply comparing costs of changing tariffs, all other details should be the same for your current and new hot water system.

Check your bill for some of the details requested.


Your Current System

System
Year installed
Hot water electricity tariff
Electricity rate (c/kWh)
Gas type
Gas rate (c/MJ)
Gas daily supply charge (c/day)

Your New System

System
Year installed
Hot water electricity tariff*
Electricity rate (c/kWh)

*Based on 2017-18 Origin Energy Standing Offer in the Endeavour Energy distribution zone. Pricing includes GST but excludes contract discounts.

Gas type
Gas rate (c/MJ)
Gas daily supply charge (c/day)
Do you already have gas for heating or cooking?