Glenn FleishmanJan 24, 2023
I now have almost four years of electricity and natural gas use for my house via our utility companies. We put in a heat pump in May 2022. Previously, we had two window ACs in bedrooms that we ran almost entirely at night (and only some nights) and a bunch of fans. Last summer, with intense heat, you can barely see an increase in usage—particularly when you factor in inflation and a slow climb upwards in rates. (These are all two-month billing periods and average temps.)
Show threadGlenn FleishmanJan 24, 2023
This winter, with some bitter cold temps for Seattle last month, it looks like we paid about 5% less with the heat pump than the same period last year. But it's likely we used substantially more therms to heat the house. (Still compiling that data; it's hard to get apples-to-apples.) This chart shows hours used for AC, heat pump heat, and nat-gas heat. (We're still using the nat-gas furnace a bit; need to consider whether turning it off turns into a maintenance problem.)
Show threadparkerparkerparker
@glennf very interesting! How did you gather this data?
Jan 24, 2023 at 6:40pmIceCubesApp
Show threadGlenn FleishmanJan 24, 2023
@parkerparkerparker The smart thermostat we use has an app that provides stats! It's not a great app, but the stats are awesome!
Show threadparkerparkerparkerJan 24, 2023
@glennf Yeah the stats look very useful. I wish my Nest thermostat did a better job here. Thank you!