Heat system (depend on Electic 40-50% and stove 20-30%)
Heatpump - China → Indoneisa 600 to 2000$ depend on functionality
Water|Water → cold accumulator
Stove from brick → heat, active carbon (400 ‘C),
Heat and cold accumulator
Air system (depend on Electric 50% min)
Solar heat collector (handmade) - polycarbonat?
Article - Performance Evaluation of PVT Air Collector Coupled with a Triangular Block in Actual Climate Conditions in Korea
Some important videos
First
Second
Third
Proves that solar energy easily can be collected in 20% electric + 30-40% through air system.
Article - Performance Evaluation of PVT Air Collector Coupled with a Triangular Block in Actual Climate Conditions in Korea