Electronic Digital Line Voltage Thermostat, Non-Programmable

I bought this thermostat for my elderly mother's bedroom, and chose it based on the proportional control and on the fact that I am pleased with my air-conditioner thermostat made by the same company. I use it in proportional-control mode, displaying in Fahrenheit to control a 1400-watt baseboard heater in a corner bedroom 12' x 12' with the door closed all night. Thermo is mounted on an indoor wall, away from heat sources and windows, at chest height. Anticipation is set to "AS" (500 to 2000 watt heaters). It does a pretty good job of maintaining a constant temperature, but only after about an hour of stabilizing, so I start it early each night. The unit appears to be designed around Celsius; you cannot set it to some whole Fahrenheit temperatures. Example: you can set to either 71.9 or 72.1, but not 72. I would rather just work in whole numbers, as does my air conditioner thermostat made by the same company. When I want to see the setpoint, I momentarily press one of the arrow keys. However, a quick "punch" of an arrow key gives me a too-brief display of the setpoint, so I must hold it down a short while. However holding down the key any longer will cause the setpoint to change. I wish a short "punch" would give me several seconds of setpoint display, the same way my air conditioner thermostat does. The power switch is recessed, so I have to use a fingernail to turn it on and off each day.

We just bought a house built in 2007 with individual low wall mounted KING WHF 2415 fan powered heaters. The existing thermostats were KING dial stats with no ambient temperature reading so I wanted to change out the stats to get better control of the temperature in the house. I bought 8 of the White Rodgers and the ambient temperature was at least 10 degrees off which I verified with an external thermometer and the set point and demand to operate was at least 3 degrees off. I made 2 calls to White Rodgers (Emerson) technical support who suggested "factory reset" and "full power reset" which I did with the support technician on the phone...and no change or improvement with the stat and the technician actually recommended returning them. The good news is the stats were easy to return and Supply House was good to work with...the fact this is a terrible product is not their fault...however they might consider not offering it anymore. I have since purchased the Honeywell TL 7235 A which was a little more difficult to install but is working flawlessly