Testing the Heat­

Some people are skeptical of using infrared heat. They believe that infrared heat will cause cancer because of the radiation that the heat source emits. Though there is a setting on home infrared heaters that keeps the heat on a weak level for extended periods of time, some think it could cause as much harm to your body as if you were in the presence of a stronger infrared heat source for a shorter amount of time [source: Associated Content].­

Infrared Heater Specifications

It's difficult to make general claims about infrared heaters because there are so many different specifications. First, there's the fuel/energy source. As we mentioned earlier, infrared heaters can be powered by electricity, natural gas or propane - if you're looking for an electric model, you should check how many volts and Hz are used. Different heaters also have different heat outputs and maximum operating temperatures. Some heaters also come with timers [sources: Tools For Wellness].

Other specifications include: filter controls, wheels, weight, fan, thermostat and color. Design also plays a role. Usually, you'll find a protective cover over the heating element, which can can be made from as copper, iron, steel or brass [sources: Ramson Solutions, Global Spec].

Read the next page in order to find out why some claim that infrared heaters are more environmentally friendly than other heat sources.