“Water heating makes up anywhere from 15 to 25 percent of the annual energy usage in a home, ” says Steve Koep, a regional sales manager for Marathon water heaters.

“热水系统的花费在年度家用能源消费总量中占了15%到25%。” 斯帝夫·科普（SteveKoep），马拉松热水器地区销售经理。

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“Water heating makes up anywhere from 15 to 25 percent of the annual energy usage in a home, ” says Steve Koep, a regional sales manager for Marathon water heaters.

“热水系统的花费在年度家用能源消费总量中占了15%到25%。” 斯帝夫·科普（SteveKoep），马拉松热水器地区销售经理。

youdao