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2. Packaged terminal air conditioner - Wikipedia

   en.wikipedia.org/wiki/Packaged_terminal_air...

   Packaged terminal air conditioner installed in a residential apartment. A packaged terminal air conditioner (PTAC) is a type of self-contained heating and air conditioning system intended to be mounted through a wall. [1] The first practical semi-portable air conditioning unit invented by engineers at Chrysler Motors. It entered the market in ...

3. 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.

4. Daikin Applied Americas - Wikipedia

   en.wikipedia.org/wiki/Daikin_Applied_Americas

   1951 – Packaged Terminal Air Conditioner (PTAC) 1962 - Packaged R-12 Positive Pressure Centrifugal Compressor Chiller; 1971 - Dual Centrifugal Compressor Chiller; 1988 - Chillers using HFC Refrigerants; 1990 - Open Protocol™ Feature as a link Between Unit Controller and Building Automation System using open standard protocols

5. Thermal destratification - Wikipedia

   en.wikipedia.org/wiki/Thermal_destratification

   Axial destratification fans are self-contained units that are installed in an array at the ceiling with the goal of blowing conditioned air in the ceiling down to the floor, where people live and work. Because axial fans are designed to blow air straight down at the floor, they can be used in ceiling and roof structures over 100 ft. tall.

6. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   Packaged air conditioners (also known as self-contained units) [75] [76] are central systems that integrate into a single housing all the components of a split central system, and deliver air, possibly through ducts, to the spaces to be cooled.

7. Lennox Merit Series air conditioner - Wikipedia

   en.wikipedia.org/wiki/Lennox_Merit_Series_air...

   Lennox has three different series of air conditioners, Elite, Dave Lennox Signature Collection and Merit series. [1] The Merit series is the lowest cost Lennox air conditioner, and there are 4 models of Single-stage with a 13, 14, 15 or 16 Seasonal energy efficiency ratio (SEER) rating. [2]