It appears as though the FHA is prepared to promote low interest loans to home owners doing geothermal AC, and guarantees 90% of the loan. I have been trying to find loan institutions (i.e. banks) who work with this program, but when I inquire I just get a blank stare. According to the FHA, Bank of America is one of the institutions processing these loans, but my branch knows nothing about them. The loans are supposed to charge 5 to 7% interest and have a maximum time of 20 yrs or more. Some legislation to this effect was passed in November of 2010. The maximum amount of the loan is supposed to be $25,000. My question is: has anyone had any experience with this, and if so, can you tell us about it? Robin geoflow