This unit was a breeze to put together and is. Dry solid once completed. The reason I purchased it was for a drafty downstairs TV area. The heater warms up the 400 sq nicely and makes it very cozy. 
But just a FYI…you cannot leave heater running indefinitely. Set the timer because it’s easy to forget it’s on  then it over heats. It does have a safety shut off. 
Haven’t tried the cold air on the unit yet… but am excited it was an option.