Over the years, we have learned that most heating & air conditioning systems have energy wasting problems that can be corrected through regularly scheduled preventive maintenance. Well documented studies have shown that:
1/100th of an inch of dirt on an evaporator coil can increase operating costs by 5%
A dirty blower wheel can reduce air flow by over 30% which causes the unit to run longer
A 23% refrigerant undercharge can cause the unit to operate less efficiently by up to 52%
Improper refrigerant undercharge will cause premature compressor failure
A small air leak in your return air ducts within a 120 degree attic can double operating costs
A 10% under charged system will reduce efficiency by 25%
The bottom line is: Preventive Maintenance saves you money!