High energy usage/bills
A few years ago, I took advantage MA home energy rebates and upgraded from my gas boiler to a heat pump. For the first year, I didn't realize that National Grid was sending me estimated bills that showed much lower usage than is apparently accurate. A year ago, they started sending me actual bills that seem very high to me. My heat pump installer came out to take a look in March, and realized they had accidentally set the AUX to kick on at ~40 degrees. I asked them to switch it off entirely. This was in March, and as it warmed up, my electric bills started to look more normal, and I sort of crossed my fingers that everything was fine. Over the summer, including two months when the heat pump was off, my electric bills were still a little high, so I had an Emporia energy monitor installed in the hopes it would help me understand what was going on.
Winter comes around, and everything is not fine! My bills have been unsustainably high, and I just don't understand what's going on. I'll share what I know, but I am very much an amateur and understand relatively little! Any insights would be so appreciated.
Heat Pump:
- 48,000 BTU Mitsubishi Hyper Series Smart Multi Heat Pump System featuring two 24,000 BTU air handlers with auxiliary electric back-up heat (one upstairs and one downstairs)
- 2 ton AHU and ducting for each
- Outdoor unit: MXZ-SM48NAMHZ-U1, SEER: 16.5, EER: 11.3, HSPF: 11
- Indoor units: SVZ-KP24NA
- I set and forget my heat between 62-64 degrees; when I'm away, I set it at 59 degrees
- We are just two people in this 1,800 sq foot home
Energy Usage/Bills:
- Nov 13 - Dec 12: 1,384 kWh, $473, 35° avg: 61° high, 12° low
- Dec 13 - Jan 14: 2,159 kWh, $737, 26° avg: 58° high, -8° low (I was away from my home for half of this period)
- Jan 15 - Feb 12: 1,714 kWh, $584, 21°avg: 42° high, -19° low (I used my gas boiler for ~1 week during this period because of extreme temps)
- Feb 13 - Mar 17: 1,815 kWh, $637, 32° avg: 66° high, -1° low