Question about Honeywell Programmable Thermostat Heater
I have an older (~20 yrs) honeywell chronotherm III programmable thermostat controlling an oil furnace and a seperate AC. It will skip over periods, get stuck in periods, not raise the temp, not stop running funace when temp is reached, etc. I've tdecided it's time to replace it, but I don't know what with. Is there a cross-walk somehwere that says "if you had x, you should now get y"? How do you know what's compatible? How hard a job is it for a person (my son, not me!)with computer hardware and automotive skills but no experience in heating to do? Should I call a pro, or is this a DIY project?
Honeywell has a great newer thermostat.
This is what I sell, it is easy to program and use and has a large touch screen. I hooked up 4 in a office and it saved them 15 % of heating bills
http://customer.honeywell.com/honeywell/ProductInfo.aspx/TH8110U1003 this is the link for Honeywell thermostat for the page.
Posted on Nov 30, 2008
You will be fine with another Honeywell T-stat.
You need one designated for single stage heat, single stage cooling.
You can also use one for universal applications as long as the single stage heat and cool are one of the options.
These can sometimes be a little more confusing to hook up for beginners, as you have many different options.
Honeywell's instruction booklets are as good if not better than most all the others.
When he removes the old one. Have him draw a diagram indicating what color wire goes to which terminal.
This will help hook up the new one.
White wire = W2
Red wire = R
Green wire = G
Yellow wire = Y1
Blue wire = C (common on most HVAC systems)
Some T-stats have batteries and do not need a common wire.
If you have a brown or black wire hooked up and you have no humidifier/dehumidifier, air cleaner etc then they are most likely unused unless they are going to the W1/W2, Y1/Y2, R, C, or G terminals.
Posted on Dec 06, 2008
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Posted on Jan 02, 2017
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