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thermal efficiency of pool heaters

Defined in 1 place of the United States Code.

The term “thermal efficiency of pool heaters” means a measure of the heat in the water delivered at the heater outlet divided by the heat input of the pool heater as measured under test conditions specified in section 2.8.1 of the American National Standard for Gas Fired Pool Heaters, Z21.56–1986, or as may be prescribed by the Secretary.

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