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Old 11-28-2010
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No, it doesn't get that warm. Water has a very high heat capacity, and it only heats a few degrees above ambient when used in a heat exchanger for an AC unit. Certainly not at a temperature where the difference would be useful to heat water.

I'd point out that the additional resistance of the heat exchanger coil in the hot water heater would also put a strain on the raw water pump for your A/C system, and that most are undersized as it is and would lead to them failing sooner.
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