I have a glass greenhouse. During the past 5 years,we tried several different heaters to provide heat to protect the plants. Last year was colder than usual winter & we lost most of the plants, because the heater couldn't maintain the heat. We had the greenhouse wired for 240v & installed the King heater. So far this year, we had one unusual cold period with the temperature staying below freezing for 4 straight days & one day below zero, but the heater maintain a proper temperature. Couldn't be happier with the heater's performance.

Use it in my greenhouse. Works perfectly for a 8'x16'. Highly recommended.

Thermostat does not work correctly..

ACF Greenhouses: I'm sorry to hear you are having issues with your heater. Please contact King Electric support at 206.762.0400. They can troubleshoot your issue and have the heater working correctly in no time.