A furnace is the type of heating system that most homeowners are more familiar with. This home appliance uses fuel -- often natural gas, which consists primarily of the fossil fuel methane -- to ...
Reduce winter energy costs by maintaining your heating system, sealing your home, adjusting thermostat settings, and following energy-saving tips from Oklahoma Natural Gas.
“This is similar to what they did with natural gas furnaces, where they set a standard so high that while they may be more efficient, the cost is higher, and what they really did was take the ...