I’ve been using natural gas infrared heater, greatest gas efficiency heater available for the price. Pros + Highly efficient, it heats up a ceramic rock panel so it gets hotter than a blue flame heater that only lights up fire and will only heat up the air. + You can feel the heat in its surroundings, so will heat up objects + air faster, in overall heating up an area faster than only blue flame or only fire heating. Cons …