Preventative Maintenance

Air Conditioning and Heat Pump Maintenance Includes:

• Condenser Coil fins will be cleaned as required. Dirty condenser coils raise refrigerant pressure higher than needed, increasing your electric bill.
• Evaporator coil will be inspected as required. These coils become dirty because air filters only collect a portion of the particles in the air. A small amount of build up on this coil can decrease efficiency and increase operating costs and even cause compressor failure. The filter should be pleated and changed monthly.
• Blower wheels will be inspected and cleaned as necessary. Dirty blower wheels reduce airflow. causing longer operating time and increased cost.
• Refrigerant charge will be checked by the superheat and subcooling method. A low or high refrigerant can easily go unnoticed and increase operating costs and can cause compressor shutdown.
• Air filter will be replaced if the customer has one on site. A restricted air filter can cause your air conditioning system to waste energy and shorten the life of the compressor. A pleated filter is recommended.
• Lubrication of motors and bearings where applicable. Improperly lubricated rotating equipment will eventually fail.
• Thermostats will be checked and calibrated as required. Improperly calibrated thermostats allow the unit to run longer than necessary. Every degree your air conditioning operates below 78 degrees can add 5% to 8% to the cost of cooling.
• Controls and safeties will be inspected and tested. Controls and safeties that do not function properly can increase operating costs and cost other components to fail.
• Motors will cleaned, inspected and the amp draw will be checked. Dirty motors or motors drawing high amperage are less efficient and will fail sooner.
• Capacitors will be tested. Weak or bad capacitors will lead to compressor and motor failure.
• Condensate drain will be checked to assure it is clear. Algae can plug a drain line, which can cause expensive water damage.
• Crankcase heater will be checked. Faulty crankcase heater will cause compressor failure.
• Relays and contactors will be inspected. Worn contacts and loose wire connections can cause motor or compressor failure.
• Unit disconnects will be inspected. A worn disconnect blows fuses and is dangerous.
• Unit wiring will be inspected and loose connections tightened. Loose connections can lead to a motor or compressor failure.
• Temperature and pressures will be taken and 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.
• Ductwork will be checked for leaks and proper insulation. Unrepaired ductwork problems will increase utility costs by 30% or more. Accessible ductowrk will be inspected once annually.
• Defrost control will be checked (heat pumps only). A defrost control that is not operating properly can cause a loss of heat and shorten the life of the compressor.
• Reversing valve will be checked (heat pump only). A reversing valve not operating properly can waste energy and cause a loss of heat.
• Electric heat strips will be checked. Heat strips not operating properly can cause a loss of heat or increase electric cost higher than necessary.