[7Iron]

I should have started at the beginning.....We owners must ensure:

a. that we are level

b. that we have not altered the as built/as designed ventilation...dirty,wasps nest etc. (assuming that the as built matches the as designed...there is a youtube video showing the upper vent being totally closed...they never cut out the opening)....If the unit some times cools and sometimes doesn't then the as built venting is probably as designed....the design may suck ??

c. and that we are providing energy to allow for the heater to work...elec, or propane.

d. Ambient temp is below 100 (I haven't figured out how to control this one) and I wonder if they really mean the "ambient" temp of the air channel not the ambient temp of the location ??? and if they are really meaning the air temp of the air channel , then shading will work....I have not yet experience ambient temps of 100.....we are generally 85-90 with 99% humidity.

But I am sure that the air channel has exceeded 100...your thoughts