Getting the Direction of Filter in Furnace Right
If you're standing in your utility room staring at a cardboard rectangle and wondering about the correct direction of filter in furnace installation, don't feel bad. It's one of those things that seems like it should be totally intuitive, yet almost every homeowner has a moment of doubt once they've pulled the old, dusty filter out. You see that little arrow on the side of the new filter and suddenly you're second-guessing which way the air is actually moving through your vents. It's a small detail, but getting it right is the difference between a happy, efficient HVAC system and one that's struggling to breathe. ...