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  2. Heating, ventilation, and air conditioning - Wikipedia

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

    In the lower middle is the capacitor. Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality.

  3. Energy Bills Could Be Even Higher in Fall Than in Summer: 6 ...

    www.aol.com/energy-bills-could-even-higher...

    Keep Up With System Maintenance. Just as you need to keep your car regularly maintained, you need to keep your heating system and other energy-using devices well maintained. Don’t wait for a ...

  4. 9 heat-saving items you need to keep your heat bill ... - AOL

    www.aol.com/news/9-heat-saving-items-keep...

    Original price: $425. A wool sweater provides added warmth on cold winter days. Chances are, your parent or grandparent has likely told you to just put on a sweater instead of turning the heat up ...

  5. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. [2][3] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). [4] Heat pumps are similar in many ways to air conditioners, but ...

  6. Seasonal energy efficiency ratio - Wikipedia

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

    The energy efficiency ratio (EER) of a particular cooling device is the ratio of output cooling energy (in BTUs) to input electrical energy (in watt-hours) at a given operating point. EER is generally calculated using a 95 °F (35 °C) outside temperature and an inside (actually return-air) temperature of 80 °F (27 °C) and 50% relative humidity.

  7. 7 ways to save money on your heating bill when it's cold

    www.aol.com/news/7-ways-save-money-heating...

    Heat loss through windows is responsible for up to 30% of residential energy loss, which means that in the winter you are literally paying to heat the entire neighborhood.. Although you may be ...

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