It’s Green

Old House Journal - - Ohj -

About 70 per­cent of the en­ergy used by a geother­mal heat- pump sys­tem comes in the form of re­new­able en­ergy from the ground. Ac­cord­ing to the EPA, high- ef­fi­ciency geother­mal sys­tems are on av­er­age 48 per­cent more ef­fi­cient than gas fur­naces, 75 per­cent more ef­fi­cient than oil fur­naces, and 43 per­cent more ef­fi­cient when in the cool­ing mode. Be­cause geother­mal pump heat­ing sys­tems do not burn fos­sil fu­els to pro­duce heat, they gen­er­ate far fewer green­house gases than a con­ven­tional fur­nace. They also pro­vide higher air qual­ity be­cause there are no emis­sions of car­bon monox­ide. In gen­eral, a 3- ton res­i­den­tial geother­mal heat­pump sys­tem pro­duces an av­er­age of about com­pared one pound to less a con­ven­tional car­bon diox­ide sys­tem. per Over hour a 20-year span, that’s enough to re­move the equiv­a­lent of 10 met­ric tons of car­bon from the at­mos­phere. If 100,000 geother­mal units go into ser­vice in the next few years, it could save as much en­ergy as re­mov­ing nearly 60,000 cars from U. S. high­ways.

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