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AC Energy Saving Tip

Clean condenser coils
Dirt, Grime and Pollution build up on the outdoor condenser. Regular cleaning reduces the power consumption and improves performance.

Correct air flow
Do not block supply or return air grills. Air current should not blow over the thermostat or short cycle back into the return air.

Short cycling Condenser Air
Most condenser discharge air vertically and draw air into the bottom or sides. Overhangs, roofs, fences or shrubs can block air discharge and be drawn back into the condenser. This increases the compressor amperage and temperature.

Fan, Belt,& Pulley
Belt driven systems require occasionally adjustment or fan belt replacement. Loose fan belts will slip on the motor pulley. Wearing the V groove of the pulley wall and slow the fan and reduce the air flow.

Condenser Fan Control
Condensers are design to work at 95F or higher. In cooler temperature below 70F, the mechanical refrigeration will lose efficiency. By turning off condenser fan or reducing the speed of the fan keeps the condenser pressure steady.

AC Economizers
When the outdoor air is below the room temperature it can be used for cooling. Why pay for the compressor operation when you don't have to.

Setback Schedule
Automatically turn the thermostat set point up a few degrees during unoccupied periods will reduce power consumption 10% to 20%

Equipment Size
Bigger is not better. Over sized equipment will short cycle and use more power. Select equipment according to the heat gain for the building. Multi-stage or variable speed equipment are more efficient and closely match the current load.


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Controls

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What causes the evaporator on an air conditioning system to freeze.
There are many ways to freeze an evaporator coil. Listed below are the most common causes. The problem can also be a combination of them. continue...
Evaporator Freezing
Evaporator Freezing