t*m
发帖数: 4414 | 1 家住米国东北部，目前用一个电热水器, 50Gallon, 12 warranty, installed on 07/
21/2007
标称每年用电$390.(assuming $0.086/KWh rate) However, the electric rate in
my town is $0.17/KWh.
我应该换成heat pump water heater吗? 花费$1650 installed (包括扔旧热水器), 有
30% federal tax credit.
热水器在地下室，洗衣间，离furnance (oil)有10几米远。
我要不要换呢？ |
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