Hello there, I just got our latest electric bill, and right away figured something was wrong. Im not home a whole whole lot, and have a non-programmable thermostat that is always set to 69*. Trying to figure out what changed from last winter, to this winter, (new t/stat last spring) I was home today, and made a point to keep an eye on the t/stat, and what the pump was doing, and I found the aux. heat strips are being activated at every heat request. In an effort to see if the unit was perpetually defrosting, or I had a thermostat issue, I disconnected the aux. wire from my thermostat, and in the last hour since Ive done it, my heat pump doesn't appear capable of making the 1 degree jump to the set temp, and is running constantly. So being that the aux. is running so often, im assuming this is the cause of my astronomic electric bill, and that maybe I have a charge problem? Currently the outside temp is about 35*F, and again, I have the t/stat set to 69, but can't seem to get there from 67-68* without the aux. strip. Thanks! -Pat T/Stat - Honeywell RTH3100C Outdoor unit - Carrier Tech2000 38YH Indoor unit - Carrier 40AQ Pardon me if I didnt get the model numbers right... Im going off of a 23 y/o manual.