The unit can be mounted on the wall using the Surface Mount Box; please see below for this item. I hope this helps.

Please see the products below for the thermostat that can be used with this heater. I hope this helps.

Yes, you can connect this heater to an external thermostat. I hope this helps.

The heater should remain warm for a little while after it is turned off. It will also turn itself on if the temperature reaches 4 degrees. It should not be heating a room to 30 degrees though. If the element is remaining on even when the fan is off I would recommend exchanging the unit. Hope this helps.

Yes, with the built-in thermostat this unit will shut off when the room gets to a certain temperature. The temperature is set by the owner, therefore it will shut off at the temperature you set it to.

This heater requires 240V. I hope this helps.

The unit doesn't have one but this is to be wired to a wall thermostat which will control the unit. i hope this helps.

Yes, you can mount this heater horizontally and there is a register style grill model number TWH1531B(not available online). I hope this helps.

If you are in Canada your voltage is 120/240 not 110/220. Also your power will fluctuate. It will not always be 120v. if you check it will be anywheres from 110 to 130v. Mine is at 122.4v right now. It doesn't matter what voltage you put to the heater it will still operate. It will just produce less heat and operate with less power with less voltage. For example a 1500W 240V heater will produce only 1260W at 220V. It is the frequency that is constant on your power lines at 60hz but the voltage varies from one house to the next.

Hi Bandj
This wall insert heater has 16 gauge copper wiring. I hope this helps.