A brief history of delivering thermal comfort We understand the built environment as a whole where its very existence chanllenges the well-being of all of us at the get-go of mankind: we had to fight for our own livelihood, and manages to stay as warm as possible to avoid the frigidness quietly steals away our lives in our dreams. Our ancestors managed to do things the smart ways, by first finding shelter, next finding means to reshape the thermal environment of shelters, i.