Dirty condenser coils raise refrigerant pressure higher than needed, increasing your utility bill.
Evaporator coils become dirty because air filters collect only a portion of the particles in the air. A clean evaporator coil allows unrestricted airflow for maximum cooling and efficiency.
Dirty blower wheels reduce airflow, causing longer operating time and increased cost. This problem can lead to loss of comfort and compressor failure.
A low or high refrigerant charge can easily go unnoticed and increase operating costs. An improper charge can cause compressor shutdown.
Dirty air filters restrict airflow and cause system to work harder, resulting in higher energy costs, less efficient cooling, and possible malfunction.
Loose belts and worn pulleys decrease airflow, increase operating costs, and shorten the compressor's life. Belts crack and break with age.
Improperly lubricated rotating equipment will eventually fail.
The thermostat not only controls the temperature in the home, but controls the cycle rate of your equipment. If your thermostat is faulty, it will affect your comfort and cause extended or shortened cycle runs – costing more energy dollars and possibly damaging components of your system.
Controls and safeties that do not function properly can increase operation costs and cause other components to fail.
Bad capacitors lead to compressor and motor failure.
Algae, insulation, and dirt can plug a condensate drain which can cause expensive water damage.
Compressor oil that is not preheated can lead to compressor failure.
Worn contacts and loose wire connections can lead to a motor or compressor failure.
Loose connections can cause intermittent breakdowns. Also, loose connections on high voltage lines can increase the amperage draw on motor and compressors, resulting in high electrical usage and costly repairs.