thermostat replacement

Help for replacing, upgrading, you old 2 3 4 5 6 7 8 wire thermostat

For all of you out there who are replacing your millivolt, 120 V volt, 24 volt, (using different words and terms here to allow search engines to find this post) thermostat, programmable or not for you heat, furnace, AC, air conditioning, conditioner and are having trouble, problem, problems, difficulty re-wiring, wiring, wire identification, identify, reference, referencing power ground heat cool heating cooling fan auto on control controls.

I had a problem replacing my carrier digital millivolt with a hunter programmable. My old system had five wires and the hunter instructions didn't tell me how to instal the thing. It referred to RC and RH wires. Mine weren't marked that way. Mine had a C connection. the Hunter didn't I searched the internet for a solution to my dilemma. Some wise ass in response to a similar request by another poor guy like me posted a response of "send me $50.00 and I tell you how.

Finally I found that the Honeywell site:

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has a thermostat wizard. The only problem with the honeywell site is that it's set up for honeywell thermostats, BUT, if you bring up the "help me buy" thermostat, you will probable find a honeywell that is almost the same as the one you have. Mine was just like the CT3200. I'll bet honeywell makes most of the aftermarket thermostats. Then you can use the thermostat wiring wizard. Here you get to plug in the color (and or description) of the wires you have to your old thermostat and the wizard will tell you how to wire the new one.

The wizard told me how to hook up four of my five wires, tape off the C wire, and jumper the RC to the RH. Ten minutes later my new thermostat was in place and working fine.