We presently have a dual whammy related to energy price and availability, and one of the ways we can reduce our energy costs, and make especially electrical resourced go further is to improve our efficiency of using the energy.
A major proportion of the energy used in domestic premises ( and caravans) goes into heating, so if we could reduce our electrical energy consumption it would help both our costs and the environment.
I have come across this Youtube video which tackles and explains the use of air source heating and looks at both the economics of running it and its impact on the environment in a refreshing honest way.
I feel this should be very relevant to at least on forum member who has a domestic Air source heating system, which he finds to be ineffective, so it might give him some ideas on how to challenge his installers to improve his system, and in a more general context thoughts on how to improve more domestic heating solutions.
Do bear in mind the video uses Fahrenheit figures, but in general the systems being discussed have to work in more adverse conditions than found in the UK.
View: https://www.youtube.com/watch?v=MFEHFsO-XSI