Energy Energy
Air Conditioning
Santa Monica is blessed with a comfortable coastal environment tempered by ocean breezes that cool otherwise sweltering summer conditions.

Nevertheless, air conditioners have found their way into many homes that might otherwise be adequately cooled by opening windows and using ceiling fans for ventilation. In commercial settings as well, air conditioning systems of marginal usefulness are often in place where operable (opening) windows and fan ventilation could do the trick.
 
In new construction or major renovations, owners have an opportunity to consider better insulation, windows, shading systems, and natural ventilation, which can sometimes eliminate the need for air conditioning altogether. For more information on these practices, consult the Green Building:Guidelines for Design.

Residential


Many residential units are central systems rated with a SEER, the Seasonal Energy Efficiency Ratio, which must be 10.0 or higher based on energy codes. Efficient units have a SEER as high as 15 or 17, and are a good economic choice when new or replacement systems are considered for purchase. Users should select units with energy-saving features such as the economizer mode, which makes best use of cooler air during the shoulder seasons of spring and fall, and in early mornings and evenings, to reduce the hours of costly compressor use.
 

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Energy Star air conditioning units are covered on the Energy Star website.

Room air conditioners are less efficient per electrical unit consumed, but can be a practical and a less energy-using alternative if used in lieu of central air systems Both heating and cooling systems can be made more efficient through good use of controls, in particular, programmable thermostats, properly adjusted to keep AC use to a minimum during non-critical periods (e.g. at night and during periods of non-occupancy. EnergyStar also has information on programmable thermostats

Commercial

The operating cost of air conditioning systems are a major portion of the commercial energy bill. Many of the systems in small commercial establishments utilize package rooftop systems (shown in photo), notorious for their lower efficiencies and their propensity for worsening efficiency with age. Commercial business owners are encouraged to ensure efficiency: air_conditioner
  1. Use maintenance contracts that check system conditions periodically.
  2. Maintain clean filters.
  3. Ensure proper operation of energy-saving features such as the economizer mode, which makes best use of cooler air during the shoulder seasons of spring and fall, and can be used to reduce the hours of costly compressor use.
  4. Contact our staff and we can help you get started.

Last updated: Friday, 05/14/2010
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