AIR CONDITIONING MAINTENANCE CHECKLIST
1. Condenser Coil - Cleaned as required
Dirty condenser coils raise refrigerant pressure higher than needed, increasing your electric bill.
2. Refrigerant Charge - Checked by superheat/subcooling method (Thermocharging)
A low or high refrigerant charge can easily go unnoticed and increase operating costs up to 30%. An improper charge can cause compressor shutdown.
3. Controls & Safeties - Inspected & tested
Controls and safeties that do not function properly can increase operation cost and cause other components to fail.
4. Relays & Contactors - Inspected & cleaned
Worn contacts and loose wire connections can lead to motor or compressor failure.
5. Crankcase Heater - Operationally inspected
Crankcase heaters that do not work can lead to a compressor failure.
6. Unit Wiring - Inspected & loose connections tightened
Loose connections can lead to a motor, control, or compressor failure.
7. Temperature & Pressures - Taken & recorded
An accurate record of your equipment's vital data can indicate potential problems, which can be eliminated. A record will be kept with the unit which may reduce emergency service time.
8. Capacitors – Tested
Bad capacitors can lead to compressor and motor failure.
9. Unit Disconnect – Tested
A worn or over-heated disconnect blows fuses and is dangerous.
10. Lubrication - Application to motors & bearings.
Improperly lubricated rotating equipment will eventually fail.
11. Belts & Pulleys - Inspected & adjusted
Loose belts and worn pulleys decrease air flow, increase operating costs and shorten the compressor's life. Belts crack and break with age.
12. Condensate Drain - Checked to assure it is open
Algae and dust can plug a condensate drain which can cause extensive water damage to your furnace.
13. Air Filter - Replaced at customer's option
A restricted air filter can cause your air conditioning unit to waste energy and shorten the compressor's life.
14. Voltage & Amp - Draw of the blower motor, compressor & condenser fan motors checked & recorded
Improper voltage and amp draw increase operating costs and can shorten the life of any motor.
15. Thermostat - Checked & calibrated
Improperly calibrated thermostats cause the unit to run longer than necessary. Every degree your air conditioner operates below 78 degrees can add 5%-8% to the cost of cooling.
16. Motors - Cleaned & inspected
Dirty motors are less efficient and will fail sooner.