What is infrared gas? im looking for a heater for my house and i saw one...

im looking for a heater for my house and i saw one i really like but its says its a "30,000 BTU Infrared Gas Space Heater", in a minute what is infrared? im looking for a heater that uses innate gas, will that one work or is it another type of gas! help!
Why have my hot sea stopped coming out?
Answers:    Close, but not reasonably.

Rather than blow warm nouns around like heaps furnaces and space heaters do, a "gas powered infrared heater" burns natural gas to radiate bake. The energy that comes out is surrounded by the infrared area of the spectrum. Think of it as a oil lamp, but instead of giving out light you can see, it give out heat you can have a feeling.
Need back beside a key breaker problem?
Well this is how it really works. the gas burns behind clay blocks in a combustion chamber the roast is radiated from the earthen on the front side.