2007-02-07 11:19:45 · 8 answers · asked by andrew 3 in Science & Mathematics ➔ Chemistry
Geothermal: an earth-coupled heat pump for example
Natural Gas forced air furnace
Solar absorbtion and radiation. This is where the home construction incorporates devices like mass walls facing in a southerly direction which absorb heat during the day and radiate it back into the house. Also would be included, heat absorbing
roofing materials, srategically placed windows, and other devices utilizing solar energy
2007-02-07 11:30:23 · answer #1 · answered by ©2009 7 · 0⤊ 0⤋
electric, gas, solar, propane and wood., okay, i know that's more than 3:).......we had a home that was electric, but also had a woodburning stove, that helped cut down a lot on the electric bill when it was really cold:)
2007-02-07 20:14:56 · answer #2 · answered by rocketgirl 3 · 0⤊ 0⤋
Oil, electricity, propane, natural gas, solar power, wood burning stove...probably hydro power as well and wind.
2007-02-07 19:27:30 · answer #3 · answered by cathy_cmr 3 · 0⤊ 0⤋
Gas
Electricity
Solar
2007-02-07 19:22:36 · answer #4 · answered by love_2b_curious 6 · 0⤊ 0⤋
love_2_b has answered the question ably. You should award him 10 points. Gas, oil, electricity.
2007-02-07 19:25:12 · answer #5 · answered by steve_geo1 7 · 0⤊ 0⤋
you seem to be posting all the questions from your home work on here -_-
do some thinking.
2007-02-07 19:22:41 · answer #6 · answered by pixiedust 2 · 0⤊ 0⤋
do you go to summit ridge or something
cuz the same questions your asking on my hw
2007-02-08 19:14:10 · answer #7 · answered by Tess 2 · 0⤊ 0⤋
nuclear
solar
gas
2007-02-07 20:54:54 · answer #8 · answered by beatlesfanatic123456 3 · 0⤊ 0⤋