Geothermal Design Assoc Inc Claim Listing Return to Directory Rating (average) (0) Business Genre Contractor, Plbg Heat AC Business Website Address geothermal.com Business Address, City 114 W Collins Rd, Fort Wayne ZIP Code 46825 Business Phone Number 2604848131 Business Fax 2604845133 Ratings There are no reviews yet. Please login to leave a review. Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?