I have a 500 gal propane tank to heat the greenhouse. The heater does need maintenance and burner replaced a few times. It's very dependable when growing plants and flowers in the feb. for the Annual state flower show competitions. And great for starting seeds for spring plantings. It's connected to a thermostat and vents opened and closes according to temps set, as well as fans coming on and off. Air vents are also installed to and bottom and tops of the greenhouse. For safety reasons it's important to maintain good ventilation. I also heard that some plants don't like butane fumes if the greenhouse is not well ventilated combined with ventilating fans. The fumes can cause plants to yellow if not properly ventilated. I keep a battery operated CO and Propane detector in the greenhouse just to be safe.
Gina did the new part get installed your heater yet? Hope the greenhouse is running well, purring like a kitten. You have so many gorgeous collections. I drool every time you post pics from your greenhouse. How often do you need to clean the sides. I power wash in summers. Of course mine does not have the permanent set up or as beautiful as your greenhouse. So summer when it empty it's a good time to straighten things up and power wash the slimy green off.
