Did you know? A unit with a dirty coil can cost up tp an additional $618 for a single cooling season. If the unit also has a clogged filter, energy costs can go up by another $480. In other words, you could pay an extra $1098 in energy bills per season if your HVAC system is not properly maintained. Jerry's Tip Of The Month: Keep unnecessary heat out of your home by closing blinds, shades and draperies that cover windows facing the sun. By installing shades or blinds that are white, heat will reflect away from the house. This will help you keep your cool by saving energy costs!