> For your father's gas heating, this really sounds like an emotional decision. Modern gas heating produces the same heating as reverse cycle, where air is pass

> For your father's gas heating, this really sounds like an emotional decision. Modern gas heating produces the same heating as reverse cycle, where air is passed over a hot bit of metal and expelled into the room. One bit of metal is heated by an enclosed and externally ventilated flame and the other bit of metal is heated by a heat pump, but the interior side is practically the same. No, it literally isn't. The reverse cycle air con just blows hot air into the room–it is purely convective. The gas heater console provides radiant heating as well. Also, the air feels different. Reverse cycle air con tends to deliver a higher volume of air at a lower temperature; gas heaters (especially if we are talking about console units as opposed to ducted systems) tend to deliver less air, but hotter air. It feels different on the skin.