EF= Energy Factor.The method a water heaters energy efficiency is compared; measuring the amount of hot water produced per unit of fuel consumed. The higher the EF, the more efficient the water heater. Gas water heaters have EF that ranges from .5-.7; Electric models range from .75 to .95.
For this new modern home, Semmes & Co has specified an Accelera 300 ELECTRIC HEAT PUMP WATER HEATER with an EF of 2.5! Heat pumps extract the heat out of the surrounding ambient air. Check out the Stiebel Eltron Accelera 300 as #1 in efficiency on TopTenUSA website, ranking the nations most efficient equipment.
Of course we are excited to discuss the implementation of this technology, so give us a call with questions!
Heat Pump Technology