Ptac Package
 |
 FRIEDRICH PTAC HEAT COOL 15000 BTU PACKAGED WALL AC AIR CONDITIONER PDE15K5SF $879.99 Time Remaining: 9d 12h 22m Buy It Now for only: $879.99 |
 Amana PTAC 14000 BTU Packaged Terminal Air Conditioner with Heat PTH153E35A $405.00 (5 Bids) Time Remaining: 4d 22h 13m |
 15000 BTU Packaged Terminal Air Conditioner with Sleeve PTAC + 5KW Heater $892.00 Time Remaining: 7d 17h 30m Buy It Now for only: $892.00 |
 PTAC PACKAGED TERMINAL AIR CONDITIONER 15000 BTU 5KW HEATERCORDSLEEVEGRILLE $1,019.00 Time Remaining: 27d 5h 18m Buy It Now for only: $1,019.00 |
 PTAC PACKAGED TERMINAL AIR CONDITIONER 9000 BTU 3KW HEATERCORDSLEEVEGRILLE $929.00 Time Remaining: 26d 5h 43m Buy It Now for only: $929.00 |
 PTAC PACKAGED TERMINAL AIR CONDITIONER 12000 BTU 3KW HEATERCORDSLEEVEGRILLE $969.00 Time Remaining: 27d 4h 42m Buy It Now for only: $969.00 |
 FRIEDRICH PTAC PACKAGED WALL AC HEAT PUMP AIR CONDITIONER W SLEEVE LOUVER GRIL $999.99 Time Remaining: 9d 12h 22m Buy It Now for only: $999.99 |
 PTAC PACKAGED TERMINAL AIR CONDITIONER 12000 BTU 5KW HEATERCORDSLEEVEGRILLE $989.00 Time Remaining: 27d 5h 14m Buy It Now for only: $989.00 |
 FRIEDRICH PTAC PACKAGED AIR CONDITIONER UNIT HEAT PUMP W SLEEVE EXTERIOR GRILL $1,099.99 Time Remaining: 28d 3h 34m Buy It Now for only: $1,099.99 |
 FRIEDRICH PTAC 12K BTU PACKAGED TERMINAL AC WALL AIR CONDITIONER W HEAT PUMP $899.99 Time Remaining: 11d 6h Buy It Now for only: $899.99 |
| Account limit of 2114 requests per hour exceeded. |
Air Conditioning - Major terms 3
Louvers
Blades, sometimes adjustable, placed in ducts or duct entries to control the volume of air flow. The term may also refer to blades in a rectangular frame placed in doors or walls to permit the movement of air.
Makeup air unit (MAU)
An air handler that conditions 100% outside air. MAUs are typically used in industrial or commercial settings, or in "once-through" (blower sections that only blow air one-way into the building), "low flow" (air handling systems that blow air at a low flow rate), or "primary-secondary" (air handling systems that have an air handler or rooftop unit connected to an add-on makeup unit or hood) commercial HVAC systems.
Packaged terminal air conditioner (PTAC)
An air conditioner and heater air conditioning combined into a single, electrically-powered unit, typically installed through a wall and often found in hotels.
Packaged unit or rooftop unit (RTU)
An air-handling unit, defined as either "recirculating" or "once-through" design, made specifically for outdoor installation. They most often include, internally, their own heating and cooling devices. RTUs are very common in some regions, particularly in single-story commercial buildings.
Plenum space
See also: Plenum chamber
An enclosed space inside a building or other structure, used for airflow. Often refers to the space between a dropped ceiling and the structural ceiling. Distinct from ductwork as a plenum is part of the structure itself.
Thermal zone
A single or group of neighboring indoor spaces that the HVAC designer expects will have similar thermal loads. Building codes may require zoning to save energy in commercial buildings. Zones are defined air conditioning in the building to reduce the number of HVAC subsystems, and thus initial cost. For example, for perimeter offices, rather than one zone for each office, all offices facing west can be combined into one zone. Small residences typically have only one conditioned thermal zone, plus unconditioned spaces such as unconditioned garages, attics, and crawlspaces, and unconditioned basements.
Variable air volume (VAV) system
An HVAC system that has a stable supply-air temperature, and varies the air flow rate to meet the temperature requirements. Compared to CAV systems, these systems waste less energy through unnecessarily-high air conditioning fan speeds. Most new commercial buildings have VAV systems. VAVs may be bypass type or pressure dependent. The pressure dependent type VAVs save energy while both the types help in maintaining temperature of the zone that it feeds.
About the Author