Why A Tune Up?

A series of homes were heavily instrumented, data was collected over time, tune-ups were performed, and data was collected again. The results of this landmark study were staggering. The researchers found that tune-ups saved energy and restored lost capacity.

How much?

Average monthly savings from a tune-up $32.76
Average cooling capacity restored 0.79 tons

The researchers concluded that:

Air conditioning maintenance benefits the consumer by lowering his operating costs, increasing his comfort control capacity, and is believed to extend equipment life.

But do homeowners need a tune-up every year? To answer that question, researchers repeated the study a year later, using the same homes from the prior year. They found that 78% of the savings were present. In other words, one year of operation takes a toll on an air conditioner. It may still function adequately, but not nearly as efficiently as it should.