Posted By rgausman on 03/17/2009 12:34 AM
Hi BM,
What are your calculated heat and cooling loads? Your loads differences between heating/cooling will help in deciding ito go with either a single stage or two stage HP. Do you have a high solar gain? Do you like to use air conditioning all summer or open the windows and only use AC for July/August humid spells?
I am up here in Madison and I found my heating load was 38K and my cooling load was 24K and decided to use a 2 stage unit. This is my first full heating season and I am totally satisfied with the performance with my system. It runs most of the time in 1st stage except when I get down to design temp of 18*F then 2nd stage kicks in.
So what HP did you decide on installing? What ground loop system did you finally decided on? I know you were interest in standing column well.
Bob G.
http://welserver.com/WEL0058/
Hi Bob,
Nice to hear from you again and it's great to hear that your system is working well. We do get quite a lot of solar gain in the winter, so for our 2700sqft house (with a 900sqft conditioned basement) we are looking at 42k BTU heat and 48k cool. We'll be going with a 4 ton
GeoFurnace Manufacturing Inc. W-->W heat pump and will be using our well (SCW system) and a double walled heat exchanger. Contractor claims savings with 2 stage unit in winter and shoulder seasons and he is passing along his cost for the upgraded 2 stage unit.
We too will be doing a Welserver install, so when it is all up and running we should get a good handle on the efficiency.
Bart