Strip the other end of the new wire and splice the conductors from the power supply to the appropriate wires in the heater.
How to install a bathroom wall heater.
Cut pieces of a 2 foot x 4 foot board to fit between the joists blocking off the fan from the insulation.
Installing a bathroom wall heater.
Remove the 4 inch flexible air duct and then take off any fasteners securing the old fan to a ceiling joist.
For all other types of heaters though and for all electrical work in the bathroom hire a licensed electrician.
Cut or push back the insulation leaving a 6 inch gap between the unit and insulation.
Wall heaters need a dedicated circuit so you will need to install a new circuit breaker at the main panel and fish cable to the location of your wall heater.
After cutting the opening in the wall for your electric wall heater have an electrician install the new circuit and fish the cable to the wall opening between studs allowing slack to.
If possible invest in one that is high enough to be difficult to touch.
Leave the electrical cable for use on the new heater.
Using a portable heater in your bathroom has many advantages one of which is not having to install them.
If you buy a portable bathroom heater and if an electrical outlet is conveniently located nearby you can install it yourself.
Do not try to save money by following the instructions on a how to.
This video shows you how to install a wall heater with a wall thermostat.
Go through the attic to the bathroom fan and remove the electrical cable and clamp from the old exhaust fan.
Completely remove the old exhaust fan.
Attach wood pieces with screws.
This unit has three heat settings you can use and a large fan which pushes the warm air farther into the room.
Moreover you should only install the heater on the ceiling if it is safe to do so.
The next step in your bathroom fan installation is to attach the fan enclosure to the joist with screws.
Resecure the electrical box in the wall replace the outlet and install the cover plate.
Bathroom ceiling heaters or heaters that are installed a little high up on the wall are much safer than those close to the floor.