Changing analog thermostat to digital?

Hi, I am planning on changing my old analog thermostat to a new digital one that will help me control the heat better, at different times etc.





I%26#039;m not an electrician but trust myself enough to do certain jobs with the right instructions.





One immediate question I have though is that I notice that my old analog thermo only has one black cable running into it. Question is, will this be sufficient for any digial thermo I buy?





I haven%26#039;t yet bought the thermo and curious about this before doing so.





Thanks,|||The black cable connected to your present thermostat has at least two conductors. The thermostat is essentially a switch, turning the heater on or off as needed.


The type thermostat you require will depend on whether you use electric heat or a furnace. One type will switch high current AC to the heaters, the other switches the 24V controls on the furnace. Many low voltage thermostats will also have connections for a central air conditioning system built in.


When installing it is a relatively simple procedure to swap the two wires from the old thermostat to the new thermostat. It%26#039;s a good idea to shut off power while doing this. Instructions are included with the new thermostat with wiring and programming explanations.|||the cable will have several wires in it, depending on if you have central a/c or not. the red and white wire control the heat portion of the stat. But all in all you probably have four wires at terminals marked r-w-g-y. Just remove from one and move the the new stat. Make sure you turn off the power to furnace when yo begin. Make sure your new stat is for a compatible system like: 24v forced air, boilers etc . . .|||ditto on above answers...i%26#039;ll add that you should be sure to use a name brand tstat such as honeywell or white rodgers,,not the $20 one on sale..i also prefer the tstats that still take batteries,,they wont act up if furnace limit opens such as when running a long time to recover home temp after setting it back for hours..just a tip........dan