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2. Is Central Air Worth the Cost? Plus, What You Can Do Instead

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   Some homes are able to keep naturally cooler than others, but many people consider installing central air conditioning to keep their homes tolerable. See Our List: 100 Most Influential Money Experts

3. The Best Window Air Conditioners, According to ... - AOL

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   Friedrich Chill Premier 10000 BTU Smart Window Air Conditioner CCF10A10A. Best for: Large rooms This model can cool a 400- to 500-square-foot space with ease thanks to its 10,000 BTUs and eight ...

4. The 6 best-looking window air conditioners that ... - AOL

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   The Soleus Air Exclusive air conditioner installs like any other AC, but only takes up 3 inches of window space. This means that the part over the window sill is only 3 inches long, marking a ...

5. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]

6. Seasonal energy efficiency ratio - Wikipedia

   en.wikipedia.org/wiki/Seasonal_energy_efficiency...

   Air-conditioner sizes are often given as "tons" of cooling, where 1 ton of cooling equals 12,000 BTU/h (3.5 kW). 1 ton of cooling equals the amount of power that needs to be applied continuously over a 24-hour period to melt 1 ton of ice. The annual cost of electric energy consumed by an air conditioner may be calculated as follows:

7. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Photovoltaic solar panels offer a new way to potentially decrease the operating cost of air conditioning. Traditional air conditioners run using alternating current, and hence, any direct-current solar power needs to be inverted to be compatible with these units.