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your rental water tank is called tankless water tank, it is high efficiency water tank, it save you a lot of money in gas bill,if you rent a convential water tank .it will cost you 15 dollars one month.if you rent a power vent water tank ,it will cost you 24 dollars one month.
 
The disadvantage of tankless water tank is that you need to wait quite some time after the water is use up in the "tank".
 
这个小问题有解决方法。在进水口之前连一个小型water tank
 
我用的是40GL conventional GAS water heater,租reliance 的。 不用电(甚至于没有电源插头),月费$10。95

...。

甚至于没有电源插头?

您再仔细看看,到底是否有电气控制、排废气泵等。
 
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