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  2. Heating, ventilation, and air conditioning - Wikipedia

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

    An air conditioning system, or a standalone air conditioner, provides cooling and/or humidity control for all or part of a building. Air conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions.

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

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

    Central AC doesn’t come cheap, either. The average cost of both the unit plus installation will range from between $5,000 up to a whopping $12,000, according to Adam Graham, a construction ...

  4. 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.

  5. Harris vs. Trump: A Side-by-Side Comparison on 7 Key Health ...

    www.aol.com/lifestyle/harris-vs-trump-side-side...

    Here’s a side-by-side comparison of where they stand. Donald Trump and Kamala Harris. The state of healthcare has reached a critical stage in the United States, and issues such as the Affordable ...

  6. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Air conditioning, often abbreviated as A/C (US) or air con (UK), [ 1 ] is the process of removing heat from an enclosed space to achieve a more comfortable interior temperature (sometimes referred to as 'comfort cooling') and in some cases also strictly controlling the humidity of internal air. Air conditioning can be achieved using a ...

  7. Boeing shores up cash reserves as labor strike, operations ...

    www.aol.com/finance/boeing-shores-cash-reserves...

    On Friday, Boeing released preliminary third quarter financials as the situation at the planemaker was getting more dire. Boeing said it expects to report a GAAP loss per share of $9.97, with ...

  8. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    Furnace (central heating) A furnace (American English), referred to as a heater or boiler in British English, is an appliance used to generate heat for all or part of a building. Furnaces are mostly used as a major component of a central heating system. Furnaces are permanently installed to provide heat to an interior space through intermediary ...

  9. Dolphins ‘smile’ at each other when they play and to avoid ...

    www.aol.com/dolphins-smile-other-play-avoid...

    For humans, flashing a smile is an easy way to avoid misunderstanding. And, according to a new study, bottlenose dolphins may use a similar tactic while playing with each other.

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