Rain barrels for thermal mass?
It’s hard to ask this question without getting a red-herring response about the principles of thermal dynamics or “have you tried ‘X’ instead..” I hope this may be a good place to ask.
After getting an $88,000+ quote to improve wall insulation on an existing house, I’ve been looking at other options for reducing climate control costs on my existing 3000 sq foot ranch home with a sweet southern exposure.
I’m considering using water for thermal mass. There Isn’t enough window coverage to use water for thermal mass indoors. I am currently planning to use an array water barrels for rain harvesting against the southern wall anyway. Can anyone tell me if using stacked water barrels on the outside of the R-19 insulated wall is likely to have any impact on heating/cooling the home?