50% of every energy dollar goes to the furnace and a/c use
40% of furnace tune-ups fail to meet the minimum airflow criterion
1/8th Inch layer of dust on a blower can reduce efficiency by
30% of Leaky ductwork can reduce efficiency by 17%
$30 per month can be wasted by not having a clean and serviced HVAC system
90% of units tested that did not have regular maintenance showed some sort of energy-wasting problems