Browse Forums Heating, Cooling & Insulation Re: Heating Running Cost - Gas Vs. Elecrtic Duted systems 2May 04, 2014 5:14 pm Owner Building at Jimboomba Woods in Logan City Qld. Blog : http://bandlnewhomebuild.blogspot.com H1 thread : viewtopic.php?f=38&t=68283 . Re: Heating Running Cost - Gas Vs. Elecrtic Ducted Systems 14Jan 19, 2022 10:01 am I have read that Gas heating works out cheaper than RC heating Gas costs around $0.017/MJ, while electricity is roughly $0.069/MJ ($0.25/kWh). If you go with a 6-star-rated gas heater, you're paying roughly ~$0.019/MJ for the actual heat at 90% efficiency (http://www.elgas.com.au/blog/449-star-ratings-for-gas-heaters-gas-wall-furnaces-a-gas-fireplaces) The RC efficiency, however, is around ~3-4x the energy input assuming 20c ambient temp outside, so you're really paying ~$0.17 - $0.023/MJ for the heat. but could be paying $0.07/MJ in winter night (even if you had invested in clean Solar) So all things equal, the costs are roughly comparable today unless you live in temperate climate cities. What the future will bring is anyone's guess, but of course it's easier to produce some of your own electricity & use batteries than using gas with emissions footprint:) Personally I had to choose to go with 6 start Braemar Heater with extra air version with $2k spent on ducting upgrade so I could add a refrigerated Add-on cooling to same ducting for hotter days (thanks to humankind for Global warming ) 2 6198 Hi all I am looking to run a water line under my concrete footpath which is directly next to my home, was seeing if this is possible without cutting the entire section… 0 20191 Hi all, sorting out the ducted air con for a 350sqm double story house. Does this placement sound reasonable to you? Also, I plan to have 6 zones I think. Living room… 0 0 |