AC Service and Maintenance

Refrigeration is the science of absorbing and rejecting heat by changing the states of refrigerant.

Refrigerant changes state from a low pressure liquid to a low pressure vapor as heat is absorbed into the evaporator.

Refrigerant is compressed from a low pressure vapor to a high pressure vapor in the compressor.

Refrigerant changes state from a high pressure vapor to a high pressure liquid as heat is rejected from the condenser.

Refrigerant is changed from a high pressure liquid to a low pressure liquid by the metering device.

1. The electrical system connected and working properly.
2. Proper air flow across the condenser and evaporator coils.
3. All mechanical parts in good working order.
4. A proper refrigerant level and unrestricted flow through the lines.
5. Condensation leaving your system.

1. Electrical
An air conditioning system is powered and controlled through electrical circuits.

To assure you have a proper electrical system we

• Check power at all disconnects.
• Check power at all units.
• Check electrical connections to all parts.

2. Air Flow
Heat exchange is the primary goal of Air Conditioning. If air does not flow across your coils, heat exchange can't occur.

To assure you have proper air flow, we perform

• Air filter replacement
• Checking your ducts, supply registers and return vents to assure there are no blockages.
• Cleaning your condenser and evaporator fans.
• Cleaning your condenser and evaporator coils.
• Perform air flow testing and temperature differentials.

3. Mechanical
Air Conditioning units contain many mechanical parts. If one breaks, the system will not run properly. Testing these parts assures that your system will run properly.

To assure your system will work for the entire season we perform

• Thermostat testing.
• Lubrication of all motors.
• Testing the metering device
• Capacitor testing and analysis.
• Testing amperage draw of the compressor and all fan motors.
• If an amp draw test calls for it, analysis of the windings in your compressor or fan motors.

4. Refrigerant
Refrigerant is the substance that removes heat from an area is is not desired to an area where it can be released. Improper refrigerant levels or flow can cause lack of air conditioning, icing of the system and damage to the compressor.

To assure your system will provide adequate air condition and not damage your compressor we assure

• Refrigerant line is without leaks, kinks or restrictions.
• Filter drier is without leaks or restriction.
• Refrigerant suction line is insulated.
• Proper subcooling and temperature split at condensor.
• Proper Superheat and temperature split at evaporator.
• Refrigerant leak testing
• Refrigerant acid testing if needed.
• Refrigerant level is correct and added if needed.

5. Condensate System
Condensation is the result of humid air running across surfaces that have a temperature below the dew point. The evaporator coil in you air conditioning system produces condensation when the humid air runs across it. Sludge is known to form in the condensation line causing restrictions in the condensation line. If the condensation does not leave your system, it can cause the water to leak and cause issues such as water damage to your floors and ceilings. The condensate line is also a way for insects to enter your house.
A functioning float switch prevents your system from operating when the condensate line becomes restricted and will shut your system down.
A functioning P-trap in your condensation line assures that a lock is in place for proper funtion of the air handler and prevents insects from entering the house.

To assure your system will not damage your house we perform

• Testing of your float switch.
• Cleaning and testing of your condensate tray, P-trap and lines.