A/C & Heating Maintenance Contact Us A/C & Heating Maintenance in Houston Why a Tune-Up? Tune-Ups Are Free!!! Years ago, the Louisiana Cooperative Extension Service at Louisiana State University teamed up with Gulf States Power to identify what benefits if any were provided by an air conditioning 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? ...