Have you changed your brain filter lately?
The recent polar vortex brought record cold temperatures throughout much of the US. In fact, the AccuWeather RealFeel® Temperature recorded in Thief River Falls, Minnesota, was an astounding 77°F below zero. Brrr! Our biggest ally in surviving these freezing temps was our furnace. Mine ran non-stop trying to keep my house warm enough. What was protecting this vital appliance to keep it running? An often-forgotten filter. We don't realize how much dust and dirty particles perv