Resist that temptation to crank up your central heating system for a few minutes of relief. The US Department of Energy says that 56% of a typical home’s energy goes to heating and cooling. A space heater uses about 86% less energy that a central heating system. Do the math - buy a space heater. For inexpensive models go to Lowe’s or Home Depot. For a premium blast, check the Vornado Touchstone