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2. Seasonal energy efficiency ratio - Wikipedia

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

   On the customer bill, the electric utility states the amount of electric energy, in kilowatt-hours (kW·h), that the customer used since the last bill, and the cost of the energy per kilowatt-hour (kW·h). 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 ...

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

   www.aol.com/central-air-worth-cost-plus...

   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

4. Top5 Ways to Cut Air Conditioner Costs - AOL

   www.aol.com/top5/ways-to-cut-ac-costs

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5. A world away from the Palisades and Altadena, apartment ... - AOL

   www.aol.com/news/world-away-palisades-altadena...

   Many of them lack common modern amenities such as central air conditioning, fitness centers or pools. ... where the average asking rate was $2,640 per month. ... driven construction costs further ...

6. Heating degree day - Wikipedia

   en.wikipedia.org/wiki/Heating_degree_day

   As total energy consumption is in kilowatt hours and heating degree days are [no. days×degrees] we must convert watts per kelvin into kilowatt hours per degree per day by dividing by 1000 (to convert watts to kilowatts), and multiplying by 24 hours in a day (1 kW = 1 kW⋅h/h).

7. Coefficient of performance - Wikipedia

   en.wikipedia.org/wiki/Coefficient_of_performance

   The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [ 1 ] [ 2 ] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.