Bill,

There is a dealer in my area selling package units for indoor/outdoor use that come factory wired with a cord, 120 volts , 20 amp circuit required. The unit is convertible to 240 & the instructions call for hard wiring, no cord at this voltage.

These units are sold this way so the happy owner can take it home & plug it in & enjoy. The joy ends when the weather turns cold & the heater won't keep up (it is a 240 volt heater being run on 120 volts).

Tom

Few things are harder to put up with than the annoyance of a good example.