● 我买了一个water heater，大约５年所有成本回来(安装费包括)。如果你不幸运，５年内坏了，就认倒霉。（if builder 给安装 (no charger)，４年内成本回来).
你可以买下你的water heater with reliance and bargin with them，不贵在用了几年之后。
○ My old house's water heater was bought before I sold the house (about $300, after renting 7+ years). So I asked the builder to install a new heater and he dind't charge me (of course, the sub-contarct is not happy for ower's heater in new house). .