a little background... We have climatemaster geothermal system- loops were at 100-130 mid-summer last year and they shut down several times. (Great units- poor geo-contractor) We live in temps close to Las Vegas (5 degrees cooler). We found out that we are 3-4 tons short on cooling for our home. I am looking for options. Drilling more wells is not possible. But we are thinking about a pool - is it possible (and effective) to use the pool to cool the loops?? Since our weather is very warm in the summer would there be enough exchange?? is it $$$ worth it? Currently we are planning to "piggy back" a 5 ton conventional system to take the burden of the main floor off the geothermal so when it shuts down we can still live in the house. If you have any input it would be GREATLY appreciated. Thanks! "If money will solve your problems, then you really don't have big problems."