That sounds like a cheaper and maybe easier upgrade than a "Cheap Heat" system. Could you share the brand names and model numbers of the equipment you used and also the brand and model number of your AC unit? Also, a picture of the install if feasible. Thanks
They are relatively easy to install if you are mechanically inclined and not afraid of a little bit of electrical work (simple connections).
The hardest part may be running the wires for the new thermostat.
Heat strips require a menu function in addition to AC & heat, typically shown on the display as HS
I got my parts from PPL and the last time I ordered in April 2016 the heat strip kit was $56 and the Dometic digital thermostat was $99.
We have two, and use them all the time when needed for heat.
But, the heat is coming from above and may not make it to the floor, you should use low speed and this is not something you come into a cold camper turn on and feel all warm and fuzzy.
One ours his been on and running for awhile it stays comfy.
And it is a furnace OR heat strip operation. Even tough two different systems are being used, the T-stat only allows one or the other.
Maybe - Neale - did you replace your thermostat or add a second one just for the heat strip?