Most of America has at least a month of winter when homes must be heated. For some, home heating lasts as long as 6 months.
To stay warm in the cold, Americans overwhelmingly rely on natural gas and electricity that provide heat respectively to 51% and 39% of homes. Oil provides heat to just 6% of America's homes.
http://www.eia.gov/forecasts/steo/pdf/steo_full.pdf.
In places where cold temperatures last for months, the cost of home heating strains the budgets of even median income families. That is especially true for those who still heat with oil--by far the most expensive source of heat.
This is correct - even if you use groundsource - you need electricity to run the equipment. I do like wood and biomass systems and switchgrass for heating
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