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2. Heating, ventilation, and air conditioning - Wikipedia

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

   All modern air conditioning systems, even small window package units, are equipped with internal air filters. [citation needed] These are generally of a lightweight gauze-like material, and must be replaced or washed as conditions warrant. For example, a building in a high dust environment, or a home with furry pets, will need to have the ...

3. Glossary of HVAC terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_HVAC_terms

   rooftop unit (RTU) A packaged unit that controls both heating and air conditioning. An air handler typically refers to a unit that provides a fan to support either heating or cooling. radiant ceiling panels Usually metal panels suspended under the ceiling, insulated from the building structure.

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   Some air conditioning systems can reverse the ... Residential central air systems are usually from 1 to 5 tons (3.5 to 18 kW) in capacity. ... (rooftop units), [77 ...

5. Air handler - Wikipedia

   en.wikipedia.org/wiki/Air_handler

   A larger air handler that conditions 100% outside air, and no recirculated air, is known as a makeup air unit (MAU) or fresh air handling unit (FAHU). An air handler designed for outdoor use, typically on roofs, is known as a packaged unit ( PU ), heating and air conditioning unit ( HCU ), or rooftop unit ( RTU ).

6. Heat recovery ventilation - Wikipedia

   en.wikipedia.org/wiki/Heat_recovery_ventilation

   Diagramatic operation of a thermal wheel Ljungström Air Preheater by Swedish engineer Fredrik Ljungström (1875–1964). A thermal wheel, also known as a rotary heat exchanger, or rotary air-to-air enthalpy wheel, energy recovery wheel, or heat recovery wheel, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of air-handling units or rooftop ...

7. Dozens of luxury condos and hotels in Florida are sinking ...

   www.aol.com/dozens-luxury-condos-hotels-florida...

   Using satellite images to track tiny movements of the Earth’s surface, they looked at specific points of the buildings like balconies and rooftop air conditioning units and measured how they ...