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2. Dedicated outdoor air system - Wikipedia

   en.wikipedia.org/wiki/Dedicated_outdoor_air_system

   DOAS air handling unit with heat recovery wheel and passive dehumidification. A dedicated outdoor air system (DOAS) is a type of heating, ventilation and air-conditioning system that consists of two parallel systems: a dedicated system for delivering outdoor air ventilation that handles both the latent and sensible loads of conditioning the ventilation air, and a parallel system to handle the ...

3. Heating, ventilation, and air conditioning - Wikipedia

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

   Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   The output of the infrared LED (like that of any infrared remote) is invisible to the human eye because its wavelength is beyond the range of visible light (940 nm). This system is commonly used on mini-split air conditioners because it is simple and portable. Some window and ducted central air conditioners uses it as well.

5. Freeze stat - Wikipedia

   en.wikipedia.org/wiki/Freeze_stat

   Air coil freeze stat. A freeze stat is a temperature sensing device for HVAC that monitors a heat exchanger to prevent its coils from freezing.Freeze stats can be used on both refrigerant-to-air, and refrigerant-to-liquid type heat exchangers and serve different purposes with similar goals for each.

6. Last year was the hottest in Earth's recorded history - AOL

   www.aol.com/news/last-hottest-earths-recorded...

   Last year was the planet’s hottest in recorded history, multiple government agencies announced Friday, marking two years in a row that global temperatures have shattered records. Scientists with ...

7. Surgeon General Urges Americans to 'Rethink How We're ... - AOL

   www.aol.com/surgeon-general-urges-americans...

   Samuel Corum/CNP/Bloomberg via Getty U.S. Surgeon General Vivek H. Murthy on July 15, 2021