I accidentally raised my electricity bill certainly high using a space heater

I had a ridiculously low electricity bill for the longest time.

I was paying no more than $81 a month for my 2 dining room house.

At the same time, my sister was paying double in a similarly sized home in a neighborhood just 10 minutes aways from mine. Granted, she has a numerous person family in that house, however that doesn’t necessarily account for a rate that is 100% higher than mine. I observed that her electric bill went down in the Summer compared to the Winter time where it was much higher. That seemed strange to me. The two of us have basically the same central Heating plus Air Conditioning plan with a/cs that have the same SEER rating plus BTU capacity. The oil furnaces are both gas fed plus fan forced, which baffles me even more; Why is her electricity bill shooting up so high while in the Winter time months if she’s running her furnace at the same rapidly decreasing temperatures as mine? I discovered the real reason on accident Last month when I obtained a space heating system on clearance plus brought it home. If it hadn’t been 50% off, I would have never obtained the space heater. My central furnace is fairly great on its own, however I wanted to try direct radiant heat in my dining room on days when it gets close to zero degrees outside. After a month of using the space heating system every other night, my electricity bill shot up by 81%. I was shocked plus had no clue that my space heating system was so energy inefficient. I told my sister about it plus she mentioned that her family uses more than two weird space gas oil furnaces in the house. That’s when I realized my sister’s electricity bill is so high because she is using space gas oil furnaces & her central furnace.

Mini split air conditioner