Yes, some are made for the outdoors, stainless steel are the only ones that last outdoors very long.
Vent free fireplaces can be installed almost anywhere, refer to the model your are interested in, every vent free fireplace has it's own clearance requirements, including floor to ceiling (Never install a TV above a vent free fireplace!)
There are a wide range of vent free gas fireplaces available on the market today. Some of the good brands of this device include the Magnum, Chesapeake and Lowrider.
Some companies who manufacture vent free fireplaces include Monessen Hearth Systems, Majestic Products, Lennox Hearth Products, Fine Homebuilding and CJ's Hearth and Home.
Vent free fireplaces are easier to install than vented models because they don't require a hole in the wall. They are 99% efficient and produce no harmful chemical by-products.
Typically not, a vent free should not be installed in an enclosed area, ie. bedroom, bathroom. They do make "bedroom" sets that are a very low BTU. The flame is very small leading most to chose another option.
The dryer vent in your garage should be installed to vent outside, away from windows and doors, to ensure proper ventilation and safety.
Because they have fireplaces that need to vent to the exterior.
Where do you get the parts for exterior air piping to fireplaces?
Napoleon Fireplace offers gas fireplaces, electric fireplaces, gas inserts, wood fireplaces, and direct vent fireplaces, in a variety of shapes and styles. Like Napoleon, their prices are affordable enough to command the service of an entire nation.
A direct vent is definitely the safest way to vent a fireplace. It is also the least expensive.
Yes, a window AC unit is designed to be installed in a window to properly vent hot air outside and cool the room effectively.
Because they have fireplaces that need to vent to the exterior.