Rant subsiding… still have more to say. OK, I'm calming down, really. All this thinking about thermostats (it really is due to the unfortunately boring Super Bowl) made me look up the features of the new generation smart thermostats. Just so I don't sound like a complete old fool.
I distinctly remember proudly telling my old man how I installed a new digital programmable thermostat in my house in 1984. His first response was… "You have to change batteries in it? How is that any good?" I guess that made him feel old & in the way. He grew up in an old house with a coal burning furnace. His job as a kid was to shovel coal & ashes, and be the thermostat. His idea of a modern thermostat was one of these.
In the late 1970s when energy costs had gone through the roof, people started installing programmable set-back thermostats. The basic idea was burn less fuel and save money. The idea had been around for a long time. There were set-back thermostats as far back as the 1930s. I do remember something like this in my grandparents house (my mother's parents), although I can't say it was programmable in the way we now think of it.
With any set-back thermostat, it is possible to be too ambitious with the program. If the difference between high & low settings is too large, your furnace will have to burn a long time when it's time to warm things up. Also, frequent changes in from high to low, and back, can waste energy. All that depends on the house's heating system and it's insulation. How do you know what settings are reasonable and what are wasteful? Apparently, the latest smart thermostats try to address that. They can keep track of the total hours of usage and make automatic adjustments toward greater efficiency. That's not a bad idea. (I wonder if it's like the efforts to automate home theater audio set-up, like Audyssey. It is at an early stage of success – a work in progress.)
It certainly is better than having a programmable thermostat, and not programming any set back schedule. That, according to my local Heat/AC guy, is what most people seem to do. Kind of like with old VCR's, most people just left the clock blinking on 12 all the time.
So which is worse – having a programmable thermostat and not using it at all, using it too much and wasting energy, or spending over $200 on a first-generation smart thermostat with all the latest bells & whistles?
Rant all done
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