Hot water heater for concession trailer?
I am new to the forum here. I have a question, hoping someone here can help.
Regarding hot water heaters in a concession trailer, what constitutes the heater being an indoor one. Everywhere I look I see them saying outdoor use only, or not mentioning whether it can be used indoors or not.
I am not looking for anything too big, just 1.5GPM or so.
Does anyone here know what validates one to be properly used within a concession trailer?
Thanks in advance.