The cold weather finally seems to have left Chapel Hill and I think that is something that all of us can be happy about. Now that things have warmed up, it becomes very tempting to open your windows and let the nice spring breeze circulate. Although this may seem like a nice idea, letting in so much outside air can seriously affect the efficiency of your building's HVAC system.
As our website explains, air conditioning systems have to work overtime to dehumidify the air and pressurize buildings when windows or doors are unnecessarily left open. This quickly becomes a problem when people all across campus participate.
In fact, our buildings' heating and cooling systems are specifically designed to incorporate outside air when temperatures are appropriate in order to get rid of stagnant air. So do the right thing and keep your windows closed this spring no matter how nice the weather is outside.