s****i
发帖数: 2993 | 1 gas is about $1.8/therm now for us
electricity about $0.085/kWh.
about 30 kWh = 1 therm.
however, electricity converts to heat about 100%, while
gas furnace is not, plus it uses electricity for the fans.
let's say the efficiency is 80%.
each therm you get,
$1.8/0.8 = $2.25 with gas
$0.085 * 30 = $2.55 with electricity.
so for whole house heating, gas is still cheaper... hohoho.
but you can use a electric heater for a room and only heat
the room. |
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