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Commercial Building Operations and Maintenance

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Air Conditioning Maintenance

 

Air Conditioning Performance

 

Air Temperature

 

Building Envelope Maintenance

 

Boilers

 

Boiler Combustion Air Tune Up

 

Boiler Maintenance

 

Boiler Water Treatment

 

Chiller Maintenance

 

Cooling Tower Maintenance

 

Comfort Factors

 

Ducts and Dampers

 

Occupant Issues

 

Predictive Maintenance

 

Preventative Maintenance

 

Lighting

 

Relative Humidity

 

 

 
       
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Air Conditioning Performance

Important factors for efficiency.

  • Condenser Temperature.
  • Evaporator temperature.
  • Cooling load.
  • Refrigerant characteristics.

Typical causes for inefficiencies in refrigerant systems:

  • Oversized unit – An improperly sized unit cycles frequently and draws more power than necessary to meet the load.
  • Thermostat location – Placement is important for accurate signaling to the unit.  This ensures comfort and energy efficiency.
  • Uninsulated ducts and refrigerant lines – The most costly condition and the easiest to remedy.  Environmental heat is picked up and forces the unit to cycle more frequently.  Occupants may not be satisfied and the utility bill will reflect the problem.
  • Low refrigerant levels – This will affect the transfer of heat in the system.
  • Dirty coils – The unit will not be able to dissipate or exchange heat.  The refrigerant will not be used to its full capacity.

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