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2. Glossary of HVAC terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_HVAC_terms

   A two-stage air conditioner is designed to operate on high and low settings during different weather conditions and seasons. The high setting is used during extreme weather, and the low setting is used during moderate weather. This type of air conditioner produces a balanced temperature and is in use for a longer period of time.

3. Tent - Wikipedia

   en.wikipedia.org/wiki/Tent

   U.S. Army tent with constructed wooden entrance, air conditioner, and sandbags for protection. Victory Base, Baghdad, Iraq (April 2004). Insulated tent for heating personnel. Central military district. Siberia. Armies all over the world have long used tents as part of their working life. Tents are preferred by the military for their relatively ...

4. 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]

5. 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 ...

6. 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 ...

7. A ‘bright star’ helicopter pilot, a daughter of immigrants ...

   www.aol.com/groom-pilot-daughter-indian...

   All 67 people on board the American Airlines regional jet and US Army Black Hawk helicopter that collided midair Wednesday night are presumed dead – a grim tragedy that has left a heartbreaking ...

8. AC - Wikipedia

   en.wikipedia.org/wiki/AC

   Air conditioning, technologies for altering the temperature and humidity of air; Across corners (A/C), a measure of external diameter of hexagonal nuts; Alternating current, a type of electric current AC power, a net transfer of energy over a complete cycle of the alternating current waveform; Asphalt concrete, a type of road or path surfacing

9. Coleman (brand) - Wikipedia

   en.wikipedia.org/wiki/Coleman_(brand)

   A separate company, Coleman Heating and Air Conditioning, sells home heating and air conditioning units. Coleman Heating and Air Conditioning is owned by Johnson Controls, and uses the Coleman name and logo under license. [8] Coleman also produces ATVs and minibikes under the Coleman Powersports [9] brand.