WHAT TYPE OF HEATING SHOULD I USE?
Reverse cycle air conditioners heat the air, but can also create airflow that feels cooler for the same air temperature. If it feels cold, try reducing the fan speed or redirecting the air outlet.
Electric radiators feel good for direct instant warmth on the skin, but will also warm up the walls and furniture rather than the air around you. Sitting directly in front of a radiator can be an effective way of achieving personal warmth in a large room without needing to heat all the air in the room.
However gas heaters also remove oxygen from the indoor air and produce carbon dioxide and carbon monoxide, so un-flued (portable) gas heaters require fresh air ventilation for health and safety. This creates a thermal leak to the outside, which makes them less efficient.