If radiant heating cannot be incorporated into your home then consider energy efficient radiant panels. We are all so used to heating systems that fan force or convect hot air into a cold room. Heated air rises to ceiling level and is quickly cooled by the cold surfaces it touches. It takes a bit of rethinking to get used to the concept of radiant heating - the heating of surfaces and solid objects, not the air directly.
Radiant heat is the way the sun heats the planet.
It is an infra red wavelength that radiates from a warmer surface or object to a cooler one without heating the space or air in between . The infra red warmth is absorbed by the cooler object which then becomes warmer. We also lose heat by convection when moving air evaporates moisture from the skin. This is why a draughty room feels even colder. Windchill is how a fan or breeze cools you in summer and is the principle upon which our Breeze Power Natural Cooling system is based.