From: utzoo!decvax!duke!mcnc!jwb Newsgroups: net.wanted Title: Re: Water Heat Pump Article-I.D.: mcnc.1595 Posted: Tue Mar 15 10:02:59 1983 Received: Tue Mar 22 07:51:13 1983 References: uw-june.339 Marine air conditioning systems use a heat pump which exchanges with sea water. Some of them are pretty big and might be useful to you. Jack Buchanan