You've probably seen these type of heaters at restaurants with outside seating, what you probably haven't seen is one that does both. So, the The Patio Palm Heater and Mister finally does what the do-only-one-thing should have done to begin with. The heater provides 40,000 BTU of heat, enough to keep you cozy in your chilly back yard. The unit is powered by propane and features an easy tank exchange mechanism.
Just don't turn both the heater and mister on at the same time or the universe will implode.
$759 will get you one at the manufacturer's web site