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Preventive Maintenance

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Why is service / Preventive maintenance so necessary for heating and air conditioning equipment?

Preventive maintenance or service is essential to the proper functioning of air conditioning and heating equipment. If preventive maintenance is not performed regularly or if it is done haphazardly, the equipment will require extensive and costly repairs at a later date that is sooner than it should be. This is not just a case of "pay me now or pay me later." It is a case of "pay me now or pay me considerably more, later," and lose reliability while paying higher repair and energy costs in the process.

Your best insurance against HVAC failure and cost containment is equipment preventive maintenance.

Preventive maintenance checklist & hvac preventive maintenance.

Why must we service & replace air conditioning filters?

Air conditioning equipment is designed to operate with a specific quantity of air passing over its indoor coil surface. When air filters are not replaced, they clog and become coated with dirt. Similarly, the indoor coils get coated with dirt. This dirt reduces the amount of air through the unit below the design limit, leading to catastrophic failure.

 Preventive maintenance or a new compressor? Ultimately, it's your choice.

Why must we clean condenser coils?

Air conditioning equipment is designed to operate between certain outdoor temperature limits. Cooling and condensing of the refrigerant vapor is designed to occur with a particular volume of air flowing through the condenser at a maximum outdoor ambient temperature. (Usually 115°F)

If the finned surfaces of the outdoor coils are fouled with dirt, the ability of these coils to transfer heat is reduced and the airflow through the condenser coil is reduced (blocked by dirt and dust).

Why check the AC refrigerant charge on a regular basis?

A unit operating with an insufficient refrigerant charge can ruin its compressor via two scenarios. The unit icing up due to a low-pressure condition causes the compressor to fail due to liquid slugging, as described before. The second type of failure is due to the fact that the compressor requires a certain quantity of cool refrigerant vapor to cool its motor windings. If the refrigerant charge is not sufficient, the motor within the compressor will overheat and burn up. A preventive maintenance program would spot this condition and save you money.


The scenarios described all cause damage to occur slowly over time, usually without being noticed until catastrophic failure has occurred.

Regularly scheduled service / preventive maintenance on any HVAC or heating and air conditioning system lowers overall air conditioning and heating service costs. It reduces emergency calls due to catastrophic failures; it results in lower energy costs and lower replacement costs. It reduces repair costs.

HVAC RULE: properly maintained air conditioning and heating equipment operates more efficiently, consumes less energy and lasts longer.

Over the years we have noticed that customers who are well informed and have a basic understanding about Heating and air conditioning make better decisions and quite frankly are far less likely to be talked into a mistake or be misled by bad or just dishonest HVAC contractors. Over the years they spend thousands of dollars less on energy, repair and capital costs.

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