[mejunkhound]

Had to look up what a WA AUS unit was for gas, elec unit is the kw-hr.

Gas unit is 3.6 megajoules = 1 kw-hr (0.034 therms) 1$ US = 1.3 $ AUS

3.6 megajoule number comes from,
.278*3.6 MJ = 1kw-hr




Rates are gargantuan compared to USA WA state: About 3X higher!

Elec power runs about 30 cents kw-hr including supply charge (AUS$) < 10 cents in WA state USA
Gas is $3.50 a therm ($1.50 or less in USA depending on area)

SPIV: IT IS TIME FOR GSHP! with your high rates.

Really surprised you nat gas rates are so high - of course, prior to fracking, many USA gas prices were over $2 a therm (7 cents a 'unit')

My DIY GSHP (60,000 BTU, 5 ton) cost under $600 and has a COP of 5.7 with 52 deg ground temp below water table.

With the WA high rates, solar is a definite option to consider!