Adjustable fans help control noise levels and system efficiencies.Electronic Controls and Digital Display - Gives you greater precision in finding your comfort zone within a 1 degree range. If you have electronic controls, you should also look for a Remote Control, which is a great air conditioner feature for units placed in larger rooms.

24 hour Timer - Some units only have a 12 hour timer, which is absurd. Being able to set an air conditioner to run automatically will help it function at its peak efficiencies and operate only when you are home. In the long run this is a big money and headache saver.

Filters and Air Purifiers - Do not bother with units that have filters that are hard to remove and clean because you won't do it. A clean filter is essential for proper and efficient operation. Look for washable filters instead of replaceable ones.

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