There are a couple of above ground heat pumps out there...
I know aqua-pro name & jandy name brand makes one; perhaps additional companies as well...
http://www.bestbuypoolsupplies.com/heatpumps.html
http://www.realpooldeals.com/Details.cfm?ProdID=771
http://www.cheappoolproducts.com/Aqu...2~product.html
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http://www.waterwarehouse.com/products/sku-5616.html
http://www.zodiacpoolheating.com/products/hp70.asp
Plus I think some of the smaller ig models are able to be used with ag pools
Best of luck!
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