Experimental Prototype architecture I suggest that any specific designs which have not had formal evaluation should not be included as part of this article A casual reader may be mislead into believing that they would be able to reproduce these results see for an example of a very strict protocol for evaluation These examples may need further validation John Hait s Passive Annual Heat Storage PAHS method Water walls and roof ponds Australian deep cover earthed roof Don Stephens Annualized Geo Solar AGS heating Thermal Buffer Zone zero Energy building