davidsimmonds said:Does anyone know of any programmable thermostats that would be usable on a 5th wheel system? I know that household units won't work since I think they use 24-volt circuits.
I agree. On many rv heating/cooling systems, there are no individual thermostats, but merely a thermistor which changes resistance with temperature, and that feeds the main control board. The anticipator(s) are on the control board, as is the high/medium/low fan? selection circuitry. While it may be possible to interface a home-type automatic thermostat with it, it would be quite difficult. Also, if you have two furnaces or air conditioners, the problem gets much worse - you may have two thermostats fighting each other; one trying to cool as the other tries to heat
If you're a 9 to 5'er, you may see some energy savings, but having had one myself (in my home), I would often kick it up or down a few degrees depending on how hot or cool I felt. Automatic as they are, they still don't take into account the humidity, which has a great bearing on your feeling comfortable or not; regardless of temperature.
Yes, I did read the article, and saw that he installed a MANUAL fan switch.
Or did he buy a programmable unit just for the digital readout?