First, your equipment is cleaned and checked by HVAC professional who is aware of common problems that occur with air conditioning and heating equipment because of poor maintenance..
HVAC professionals basic check should include cleaning the coils, check the refrigerant charge, check the electrical connections and components, check and change the filters, blow the condensation lines, check the thermostat, and check all amp draws of all motors including the compressor for unusual readings..
The secondary benefit for having air conditioning and heating maintenance contract is many companies will offer you discount on parts and will not charge you overtime for coming out after hours or on weekend..
That means if your system fails on Friday afternoon the chances are far better that your system will be up and running again before the end of the weekend as long as it's not major part that fails that is unavailable..
Air Conditioning and heating maintenance plans are different from company to company so it's good to shop around so that you can get the best air conditioning and heating plan for you...
Make sure you check before signing agreement and some companies will give you reduced price on parts if breakdown does occur and if the breakdown occurs at night or on weekend some companies offer no overtime charge ..
Lastly, the maintenance should include maintenance calls two times year where the company sends tech to your house to perform the air conditioning maintenance..
Dirty Filter or Evaporator Coil Dirty or coil causes the air side of the equipment to lose the ability to deliver the proper amount of air inside the home.
Another problem that can result from coil or filter is that the fan for the blower will run at higher than normal temperatures and that leads to premature failure..
If the unit is in area and the performance of the equipment will be affected.
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