Comfort Control

Comfort Control Heating and Air Conditioning, Inc.

Air Conditioning

Condenser Coil Cleaning

Over time, the condenser coils of your air conditioner accumulate dirt and debris. As the coils get dirty, they lose the ability to transfer heat effectively. Your cooling system then has to work harder, raising the refrigerant pressure higher. You may notice reduced cooling capacity and an increase your utility bill.

Pledge: We will clean the condenser coil fins to restore their efficacy.

Evaporator Coil Cleaning

Evaporator coils become dirty because air filters only collect a portion of the particles in the air. Even a small amount of dirt can reduce air flow, leading to an increase in frequency and duration of system operation and noticeable decrease in cooling capacity. The effect of this diminished efficacy will be higher utility bills. This is also a major cause of compressor failure. We recommend that customers replace or wash properly sized air filters every month.

Pledge: We will inspect and clean evaporator coils to restore their efficacy.

Blower Wheels

However effective your air filter, dust and grime end up accumulating on the blower wheels of the air conditioning system. A telltale sign of dirty blower wheels is reduced airflow and shorter cycling times – the system turns on and off with increased frequency. The system continues to push air through, but it has to work harder and longer to do it. The result is decreased efficiency, higher operating costs and a greater strain on the system; one possible outcome is compressor failure.

Pledge: We will inspect and clean the blower wheels

Refrigerant Charge

To be properly calibrated, the refrigerant charge of your home’s air conditioning system must remain in a “goldilocks zone” – neither too low, nor too high, but just right. A low or high refrigerant charge reduces the capacity and efficiency of the system, leads to increased operating costs, and can cause compressor damage and shutdown. Our technicians assess the question of the system’s refrigerant charge by comparing temperature and pressure readings in a two-pronged approach: measuring the super-heat of the evaporator and the sub-cooling of the condenser.

Pledge: We will gauge the refrigerant charge using super-heat and sub-cooling measurements, and optimize the charge accordingly.

Air Filter

The condition of the air filter factors highly in the peak operation of your air conditioning system, and is one of the first and most frequently accessed areas for cleaning. If the air filter is dirty, the system not only has to work harder to circulate air through your vents, but you and your family may also suffer allergies and respiratory ailments due to breathing poor quality air. Most of the time, washing the air filter is all we need to do and it works like new; eventually, the air filter will degrade and we will replace it with a new one.

Pledge: We will wash or replace the air filter.


The machinery comprising your air conditioning system includes several motors and bearings that rotate and shear against each other. Lubricating oil enables the moving parts of the equipment to function smoothly, mitigating the friction that wears down the gear, reduces its efficiency and ultimately brings about its premature demise.

Pledge: We will lubricate the motors and bearings of the system.


When you input the desired temperature setting on your thermostat, you depend on the accuracy of its readings to determine when the air conditioning system should initiate cooling and lower the temperature to the mark you set. If the thermostat is improperly calibrated, the temperature it reads will not match the true state of your home’s environment, and the system will run longer than indicated. Every degree below 8 degrees of difference between your thermostat’s readings and the actual temperature will incur a 5% to 8% overrun to the cost of cooling your home.

Pledge: We check the thermostat for accuracy and calibrate it if necessary.

Controls and Safeties

Besides the thermostat, your air conditioning system includes several switches, fuses, circuit breakers and other controls for operational and safety purposes. Whether you interact with the controls or they regulate the system in the background, you depend on their proper calibration to keep the system running at its best. If the operational and safety controls stray from optimal settings, the false readings they provide may throw the system off balance, potentially leading to an increase in operating cost and the premature failure of other components.

Pledge: We will inspect and test controls and safeties.


The operation of your cooling system depends on airflow, and the machinery that pushes air through the system is the motor. Although grease lubricates the motor and helps it run better, the accumulation of spent grease – particularly as it combines with dirt that enters the motor from outside – eventually becomes a source of friction. The build up of gunk in the motor forces it to expend ever more energy to overcome the strain. The result is a reduction in the motor’s efficiency and lifespan.

Pledge: We will inspect and clean motors.


For the motors that run the compressor, blower and fan of your air conditioning system, a capacitor serves to provide an added electrical impetus to start the motor and to sustain it during operation. The measure of a capacitor’s useful service lies in the charge that it can hold and deliver to the motor it is attached to. If the capacitor fails, the motor cannot engage or continue running, and although the motor receives electrical power, it strains to push forward but falters. Not only will a worn out capacitor prevent air conditioning from cooling your home, but it can lead to the deterioration and failure of the motor it is attached to.

Pledge: We will test your capacitors to ensure they hold sufficient charge.