Hi jensenmf, though Infratech heaters were not used on this project, they can easily be installed in both indoor and outdoor spaces. They emit infrared heat that doesn't blow away in the wind and produce zero sound, odors or toxic emissions. Let us know if you have any questions!

How do you find information on how to build an outdoor double decker fireplace? Are there two flue's or just one?

@cubies1 there are two flues on a double fireplace.

The way that the double fireplace acts as the structural strong point makes this deck really unique. I really like how the stone is separate from the house but looks like it could belong inside as well as outside. If this were mine, I think more time would be spend on the lower part during the cooler months. http://www.reevesfence.net/index.php?option=com_content&view=article&id=4

Beautiful!