skuska

There are a dozen little things that can contribute to your air conditioner being less efficient than when it was factory fresh. Worn fan belts, bent cooling fins, damaged insulation on the coolant line, and other small signs of wear and tear on your unit all chip away at efficiency. Individually, most of them won't contribute to a catastrophic loss of cooling power but if you've got ten minor things wrong with your air conditioning unit that only sap 1% efficiency, you've got a cumulative drop of 10%.