In a world where energy efficiency is something we all seek, electrically-heated infrared heaters are just one smart choice among many. They can radiate up to 86% of their input as output-able energy.. Almost all the input energy is converted into radiant heat by a filament which is then often directed by reflectors. Sometimes some heater’s energy is lost along the way from the heating element by both processes known as conduction or convection, though not always. Some designs have reached the point where precisely the desired level of heat escapes the heater, what would otherwise be considered loss. Some of the most efficient and best used heaters in the industry are in fact those that work underwater. Their particular level of efficiency often out-performs those that do not work in the water. Pools throughout the continent use these kinds of heaters, as they come with both financial advantages as well as performance superiority. The simple fact is that more often than not, the greatest and most economical choice to heat any sort of water-based pool, are Infrared Water Heaters.