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Reply With QuoteFor air conditioners http://energyrating.gov.au/appsearch/air_srch.asp
Calculating running cost of gas and inverter heaters/coolers? Can someone give some guidance (or links) that show how to calculate the cost of running a gas ducted heating system or inverter (heat pump) heating/cooling systems.
I'm trying to weigh-up the running cost of a gas/ICE (non inverter) system vs a inverter system. I have the specs showing output power (min and max), input power & efficiency for heating and cooling.
The gas heating is cheaper to run; however the bolt on ICE (non inverter systems) are not as efficient as an inverter. Given I'll probably only use the AC for 10 days a year it probably isn't an issue. Just would like to determine running costs.
For air conditioners http://energyrating.gov.au/appsearch/air_srch.asp
Brilliant thanks. need an equivalent for gas heaters now.
Get the M/J rating off the appliance, divide it by the heating value per cubic metre of the specific gas you are using (NG/LPG) and work out off your bill how much a cub.metre of gas is and there you have it.
eg 38mj p/h ~ 96mj = 0.395m/3
and if for arguments sake gas cost 50c per m/3
0.5x0.395=0.1975
so it will cost you almost 20c p/h to run.
Plumbers were around long before Jesus was a carpenter
assuming it is running all the time. That's an assumption that is fine if you are just comparing different forms of heating but not if you want the actual cost. The actual cost is relevant if you are working out the pay-back time of a more expensive but more efficient kind of heating.Originally Posted by wonderplumb
There is a free Choice magazine article here
http://www.choice.com.au/viewArticle...eating+options
We've got ducted reverse cycle air con as the only form of heating. I think if I had to replace it, I'd put in a gas ducted heater and a couple of split air con units (plus more insulation). I think R/C air con is more expensive to maintain/fix than a gas heater. We have ducts in the roof in this house and they are dust free unlike the under-floor ducts in the last place.
According to Choice, gas is slightly more expensive to run than reverse cycle air con (for heating) in Melbourne. However gas produces much less CO2, only beaten by wood burning stove (assuming trees are replanted).
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