Off-grid house should not get any energy input from outside. It should use only energy generated on-site. Because of that, in my opinion a house that’s powered by propane (for genset, cooking and heating) is not off the grid.

But in cool climates most of the energy is required for heating and domestic hot water. How can an autonomous house get large amounts of energy needed for those two uses?

In this article I will get you a short review of off-grid HVAC, or off-grid heating, ventillation and air conditioning. (more…)