I am brand new to this so bear with me. In a brand new house built with 6" ICF walls for basement and 1st floor and with spray foam insulated 2" x 6" walls plus a very thick layer of blown-in insulation above the 2nd floor ceiling, my electric bills seem very high for a geo system. I am located in Northwestern PA. My geo system is a Carrier GT-PG (50YE) size 048 (2 ton?) with ground loop. The house size with unfinished basment is 4,349 sq ft - unfinished basement is 1,655 sq ft; 1st floor is 1,655 sq ft; and 2nd floor is 1,040 sq ft. The system was turned on the first part of October. The electric bill (kwh cost of $.10104) through Nov 1 was $187. From Nov 2 - Dec 6 the bill was about $400 ($378 + $20 base amount). The Kwh use for Nov 2 - Dec 6 was 3,546. The Heating Degree Days for that time period was about 900. The thermostat was set at 70 deg and for one week it was set at 60. We have had a few colder days recently (Heating Degree Days of about 50 per day) and the daily kwh usage was close to 170 (with thermostat set at 70). The Carrier GeoDesigner estimate for the year to heat was 9,395 kwh (including electrical resistance emergency heat). Based on what I have experienced to date I estimate my annual usage for heat could be 15 - 16,000 kwh. This is almost double the Installer / GeoDesigner estimate of kwh usage. Installer did a check at beginning of Dec and said the system needed to be recharged and they turned fan to max speed (fan on continuously). It does not appear either made any improvement. Something really seems wrong. Installer is to go back but based on recent check I don't what type of improvement to expect, if any. Worst part is no one is living there now and no work is being done on house (it isn't quite done yet). The house is entered about once or twice per week and there is almost no other electric usage. Avg monthly usage before heat was turned on was about 300 kwh. Thoughts?