I will look into those further and see how small of one is available. If one chooses to build a low heat/cool demand living spaces by using passive solar and super insulation and heat recovery finding heating sources for meeting that lower demand is overkill in capacity and cost. Especially if you go rural electric(off peak) for primary and really need a backup source in case of interruption. Few, but the consumer/individual, are really concerned about lower energy bills.
|