I recently changed from a full rated 1.5hp single speed pump motor to a 1.5hp dual speed pump motor. I've been tracking energy usage and thought I'd share my findings.
I'm comparing the 4 weeks ending 2/21/2018 to the 4 weeks ending 2/21/2017. Weather conditions were slightly colder in 2018, but we're on natural gas for heat, so the impact should be limited to just the impact of spending more time inside. I've also replaced a few CFL lights with LEDs as they burned out over the year, but otherwise all major appliances, systems and usage patterns are the same. I have a wife and young kids who don't fully understand that lights can be turn 'off' as well as 'on', so it's always great to find ways to save on energy use that they don't even know about:
This should be one of my lowest KWh savings months since run times are short this time of year with no SWG. It will be one of my highest % savings months since no AC is running. Pretty easy way to put a decent dent in your energy usage.
I'm comparing the 4 weeks ending 2/21/2018 to the 4 weeks ending 2/21/2017. Weather conditions were slightly colder in 2018, but we're on natural gas for heat, so the impact should be limited to just the impact of spending more time inside. I've also replaced a few CFL lights with LEDs as they burned out over the year, but otherwise all major appliances, systems and usage patterns are the same. I have a wife and young kids who don't fully understand that lights can be turn 'off' as well as 'on', so it's always great to find ways to save on energy use that they don't even know about:
Old | Pump | New | Pump | |||
KWh | $ | KWh | $ | |||
Max | 55.0 | 4.68 | 37.5 | 3.19 | ||
Min | 35.3 | 3.01 | 19.3 | 1.64 | ||
Median | 43.5 | 3.71 | 24.3 | 2.07 | ||
Average | 44.6 | 3.80 | 25.1 | 2.14 | ||
Total | 1196.9 | 101.99 | 678.0 | 57.76 | ||
Savings | 518.9 | $44.23 | 43% |
This should be one of my lowest KWh savings months since run times are short this time of year with no SWG. It will be one of my highest % savings months since no AC is running. Pretty easy way to put a decent dent in your energy usage.