Data Manual
10
THE ZONELINE AZ45 AND AZ65 SERIES have changes suggested by customers and enhancements from  
GE Appliances Engineering to make product improvements and meet the changing environment.  
• Quieter Operation 
• Ease of access—fewer screws and number of parts 
• Make up air module 
• Cross-flow blower across the product line for quieter operation 
See the “Features and Benefits” section for in-depth explanation of these changes and the industry-leading features  
of GE Appliances Zoneline retained from previous series. 
THE ZONELINE AZ45 SERIES INCLUDES “DRY AIR 25" MODELS, WHICH REMOVE 20-35% 
MORE MOISTURE THAN OTHER ZONELINE MODELS*.
DRY AIR 25 MODELS COOLING WITH 
RESISTANCE HEAT
•   Removes 20-35% more moisture than standard      
Zoneline models
*
•  Dry Air is a separate sealed refrigerant system
  —No mechanical parts 
  —No special maintenance required 
•  Helps maintain lower relative humidity in rooms
•  Maintains comfort at slightly higher room temperatures
  —Reduces operating costs 
  —Provides comfort without overcooling
•  Corrosion treatment is standard
•  Excellent choice for humid climates
•  Available in 7,000, 9,000 and 12,000 BTU sizes
The Dry Air 25 system, a heat pipe, is a hermetically sealed 
heat transfer surface installed in a “saddlebag” configuration 
around the indoor (evaporator) coil of the Zoneline unit. This 
coil arrangement will transfer heat from the front coil of the 
saddlebag to the rear coil without power consumption.
This assembly uses R-410A as the refrigerant and is not 
connected to the regular Zoneline refrigerant circuit.
As warm, humid air is pulled through the front (pre-
cool) section of the heat pipe, the heat removed from 
the air is absorbed by the refrigerant, causing the 
refrigerant to change to a gas and flow to the rear (re-
heat) section of the heat pipe. The air leaving the pre-
cool section of the heat pipe is cooler and at a higher 
relative humidity level than the room air. The pre-cooled 
air is further cooled as it passes through the evaporator, 
consequently allowing the evaporator coil to remove 
more moisture.
When the cold air from the evaporator comes in contact 
with the re-heat section of the heat pipe, the heat that 
was removed by the pre-cool section is added back to 
the air and the refrigerant in the heat pipe condenses 
and flows back to the pre-cool (front) section. The air 
discharged into the room by this process is much drier, 
creating a more comfortable room condition.
The Dry Air 25 models center around GE Appliance’s 
heat pipe technology. This technology enables Dry Air 
25 to remove 20-35% more moisture from the air than 
other leading manufacturers’ packaged terminal air 
conditioners. This helps maintain room comfort at a 
higher room temperature, reducing operating costs.
The Dry Air 25 keeps a room cool and dry, and this is the 
most important benefit when it comes to the occupant 
of the room—hotel guests, apartment residents, 
students. In a hot, humid climate, getting away from 
the humidity is just as important as getting away from 
the heat, and the Dry Air 25 is the perfect solution. The 
dehumidification of the Dry Air 25 has been verified by 
the same AHRI test conditions under which standard 
units are rated.
Specifications subject to change.
* Varies when comparing dehumidification rates of the 7,000/9,000/12,000 BTU base 
models to their Dry Air model counterparts.
DRY AIR 25
ARCHITECTS & ENGINEERS DATA MANUAL AZ45/AZ65 SERIES










