What a Makeup Air PTAC Does, and When You Need One
Building codes in many jurisdictions require a set amount of outdoor air in guest rooms and apartments. Traditionally that air comes from a rooftop makeup air unit and ductwork to every room. A makeup air PTAC handles it at the room instead.
How it works
The GE Zoneline makeup air PTAC is a standard Zoneline with a makeup air module added. The main unit heats and cools like any other Zoneline. The module:
- Delivers 35 CFM of conditioned outdoor air into the room
- Dehumidifies incoming air when outdoor humidity rises above 55% relative humidity
It fits the standard 42" x 16" wall sleeve, and its efficiency meets ASHRAE requirements for PTAC units.
Why it matters
Unconditioned outdoor air brought into a room in humid weather raises indoor humidity. That leads to clammy rooms, odors, and mold complaints. Conditioning and dehumidifying the air at the unit keeps outside air from becoming a moisture problem.
When to consider one
- New construction or major renovation where a rooftop makeup air system and ductwork would otherwise be needed
- Properties in humid climates with moisture complaints
- Rooms where the code requires outdoor air and the building has no central system to deliver it
Confirm outdoor air requirements with the project's engineer or code official. The makeup air PTAC is one way to meet them, not a substitute for the design review.
Variable speed option
GE also offers makeup air on the variable speed AZVS as a factory-installed option. In closet-installed vertical units, the V12 series delivers 25 to 70 CFM of outdoor air through a variable speed fan. See GE Zoneline Vertical V10, V11, and V12.
Things to know before ordering
Corrosion protection is standard on most Zoneline units, but makeup air models are not recommended for coastal or corrosive environments. Tell us if the property is near salt water.
Send the old unit's model number, the voltage, and the quantity through the contact form or call 800-866-1210 for pricing and availability.