A/C 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.