The heater works very well.  As a matter of fact, four of us enjoyed a nice bottle of wine along with cheese and crackers on our deck and felt very comfortable, even though the air temperature was around 50 degrees. 

Unfortunately, the instruction manual needs to be updated to include better pictures or drawings, as well as complete STEP-BY-STEP directions.  There were parts not mentioned in the manual.  I followed the directions explicitly and never was there a mention of the steel ring and cap to support the center pole.  There were no clear pictures provided for the direction that the screws and caps needed to go in the dome.  Omitting important steps and/or pictures only makes the job more difficult and frustrating.