by HamRadioRocks » Sun 13 Jan 2008, 02:24:22
I installed a programmable thermostat this past fall. For the setback periods, I set it to 55 degrees, as I don't need a comfortable temperature when I'm sleeping at (under the covers and not awake to feel the chilly air) or when I'm at away at work. Of course, the temperature doesn't actually drop all the way down to 55 degrees at night because of residual heat left over from the evening. During the day, the temperature usually goes up a few degrees. However, the programmable thermostat does save energy on days that are cloudy, windy, and cold, the combination needed for the indoor temperature to go down during the day.
For the morning and the evening, my thermostat setting at the beginning of the heating season (September and early October) to 67 degrees. At that time of the year, I'm wimpy at handling the cold, so I need a warmer temperature. I have gradually lower the thermostat through the fall and winter. Since I'm better adapted to the cold and am now wearing heavier attire (sweater, long johns, wool socks), I can handle a lower temperature. The morning/evening thermostat settings are now at 60 degrees, and I'll continue to lower this setting into the upper 50s throughout the rest of the winter. 60 degrees now doesn't feel any colder than 67 degrees did 3-4 months ago. In the spring, I'll be raising the morning and evening thermostat settings, as I'll have less capacity for handling cold and be wearing less clothing.
This past summer, I installed a plug-in timer for the window air conditioner, and I only ran the unit for a few hours in the late afternoon or early evening. I used to adjust the thermostat setting to maintain a temperature of 79 degrees but bumped it up to 81 degrees this past summer. The combination of the timer and the higher thermostat setting cut my summer electricity usage by 40%-50%. Although a one-degree difference is felt more acutely in summer than in winter, it doesn't take much of an increase in the thermostat setting to slash one's use of air conditioning.
I can't believe that some of you keep the indoor temperature well into the 70s in winter, especially given what this web site is about. My workplace is kept at 72 degrees, and I absolutely CANNOT wear a sweater at that temperature. That's warm enough for midriff-baring outfits! When I get up for work, I have to wear a short-sleeved shirt under my sweater so that I can strip down without looking sloppy. (An undershirt just isn't proper work attire.)
I'm surprised that those of you living in colder climates don't necessarily keep the thermostat cooler than those of you in warmer climates. I would think someone from the Bay area or Arizona would keep a higher thermostat setting than someone from Wisconsin. I thought that you're supposed to adapt to the winter cold (and summer heat) so that you run your furnace (and air conditioner) for fewer hours per day.