The company has done many ground loops and we're only their second pond loop, but they are a reputable company. However, I agree with you and believe there is some 'learning' happening here with the winter side of things (the unit was fine during the summer as far as I cold tell). Mark keeps throwing me questions to ask y'all. IMO the unit size etc and other than the problem with dimming we had, it is operating pretty close to correct. Like you said, without disconnecting the heat strips, I'm not convinced. I will dig up the literature on size etc; this may give you a better understanding of the unit itself (and that staging etc is SO over my head). Our house is well constructed with high R ratings in the walls and ceilings. It's been SO darn cold here this past month. I know it is 5 ton and we have 500' (5 loops) sunk in the pond for sure. I'll get back with more info.
