Greenhouse: Calling all greenhouse experts! - (8' x10' recommendation), 1 by jimrader

jimrader wrote:
I have the harbor freight 10 x 12 and it requires serious cooling in my zone 9 location
it is protected by my house on the north and the west. (So no afternoon sun) I have an evaporative (swamp) cooler which is on a thermostat which is set to 78 degrees. The $300 cooler runs most days because the GH heats up anytime the sun is on it.

in addition to the cooler I have a 1500 watt electric heater

the purple line is the greenhouse the other two are outside thermometers. This is for two nights
see the attached temperature chart