Tag: Guest Post: DOE Backs Down on Higher Furnace Efficiency Standards; Air Conditioning Standards also Being Challenged

In late 2011, the Department of Energy (DOE) announced increases in the minimum efficiency standards of residential furnaces and air conditioners. In the 30 northern states, the minimum efficiency rating of new furnaces was to be raised to 90 percent from its current level of 80 percent, starting May 31st, 2013. In the 20 southern…