Posted 2/28/2014 19:11 (#3723367 - in reply to #3721085) Subject: RE: Geothermal heat pump
NW MN
13 year old house have you inspected your attic insulation lately. Not sure how longs it takes to settle/pack but I think over time you could be losing some insulation depth.
As you know darn hard to compare different heat sources between regions and square footage of house. Has to be local area I believe.
Geothermal heat pump
