First, turn off power to your furnace to insure you do not fry your transformer. Then write down the connections to your old stat before disconnecting them. If you have enough wire, clip off the old ends and restrip the wires so they don't break off when tightening the terminal screws. Connect wires to the same terminals as the old stat. Usually (if you have A/C) the stat terminals will be marked r,w,g,y, and rc or common. There may be additional terminals for a stat that may also be for heat pump applications which would require wiring for a reversing valve.
Attach the back plate (subbase) to the wall with appropriate anchors and use a small level before tightening the mounting screws in their slotted holes then simply connect the wires and plug the stat to the backplate. Turn the power back on and you are set to program.
There are many different digital stats available. If you know someone in the HVAC business, for about 100 dollars Lennox and Honeywell both make excellent models with simple user interface which you can program from your easy chair then plug to the subbase.
Whatever time program settings you use, give 1/2 hour lead time for temp change and do not program night setback more than 8 degrees. It takes more energy to reheat or recool the average home 10 degrees than you would save in energy by setting back. I also reccomend leaving the fan in always on mode when you can. This stops air stratification (uneven temps from flooor to ceiling) and provides maximum filtration. The models I mentioned have a 30% fan on setting to save energy and give better air filtration.
If you live in a cold climate a good addition to your system is a duct mounted humidifier. Not only does it alleviate dry air problems such as static, and sinus dryness, you can heat at a lower temperature and still feel comfortable
Installing a new stat is not as difficult as it may sound, I'm sure you can do it, good luck.How to replace a thermostat?Tell you the truth I don't know.How to replace a thermostat?The difficult part comes in wiring. If you or someone you know is good with wiring, you should be fine. Some houses are wired different, you need a volt meter, and you need to be able to figure out which wire goes where. Just because the instructions that come with the new one will tell you to %26quot;put the red wire here%26quot; for example, your house may not be wired like it should and the red wire may not be the right one. (I have lived in several old houses and this is a major issue). But the wiring is all there is to it except for a couple of screws. Good luck.How to replace a thermostat?Before you do, talk to some of the people who have ended up switching from a digital to a simple analog thermostat (seriously)!How to replace a thermostat?Most of your thermostats come with a wiring guide, the guide will tell you where to put certain color wires.How to replace a thermostat?Easy.
Take off the cover and mark which wire is hooked to R, W, G and so on. Most likely you have three wire. Mount the new thermostat and reattach the wires to proper terminal, R to R, W to W and so on.
Don't forget to program your thermostat to suit your needs. Have it turn the heat down about 30 minutes before you normally go to work and start to bring the temperature up to your comfort level about 30 minutes before you get home from work. Turn it back 10 degrees at night and when you're gone and you will probably save the cost of the thermsotat in energy costs in the first week.How to replace a thermostat?Well it is simple to a point.
Take the old one off.... Making notes to the way the wires were hooked up.... Just because it says R that doesn't mean it is hook up to R on the furnace.
Put the new one on the wall and hook the wires back up to where they are supposed to be....
Good Luck
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