Hi, I recently bought a house with a heat pump. Normally, my electric bill is around $200-$250/month, but it was nearly $800 last month. They estimate every other month, so it could have really been two $500 months, but it's still a huge increase. I assume the heating system is responsible for most of that.
When I bought the house, I checked into previous electric bills and it was more or less the same way last year. About $150-$200/month in mild weather, $250-$300/month in the summer with air conditioning, jumping to $600-$800 in December or January.
Does that sound like just a normal drop in efficiency due to cold weather or is it more likely a sign that something might actually be wrong with the system?
The unit is nearly 15 years old, so I don't expect it to handle cold weather as well as a newer one might. I noticed the 2nd stage electric heat switching on occasionally on some of the coldest days, but it has generally been off.