gaw wrote:I don’t have one.
It may be nice to install one before I start to make weatherization improvements like double pane windows and insulation to track improvements but the weather is ever changing so I would have to track a ton of other information as well to keep it all relevant. If they were considered necessary the manufacturers would include them with your stoker but I also understand inquiring minds want to know.
That's one of the reasons that I've tracked mine for the past couple of years. Since my memory isn't what it used to be, I can't remember exactly one winter from the next. As you said, if I put in new windows at the end of one season, then checked how much coal I used (roughly) at the end of the next season, I might be surprised to see that I burned the same amount of coal. That would seem to me that it was money down the drain on the windows. But, if I keep weather data as well, I would see (hopefully) that it was a much harsher winter and I would have burned more coal without the new windows.
Hell, I date my flashlight batteries, not that they last any longer but I just have to know.
Do they put out on the first date? Couldn't resist that one. I record the date whenever I change razor blades, so I know where you're coming from. Going on four months with the latest, but I have the facial hair of a 14-year-old.