The Gemini® Two-Stage Commercial Split System sets a new standard in commercial HVAC solutions. Paired with the Carrier 40RU series indoor air handlers, this system offers energy-efficient cooling, precise climate control and exceptional reliability. Featuring Puron® refrigerant and meeting ASHRAE 90.1 efficiency compliance, the 38AUD ensures sustainable indoor air quality. With its innovative two-stage cooling, high EER ratings and durable construction, this system delivers dependable, energy-saving performance, whether installed on rooftops or on the ground.
Enhanced safety features include high- and low-pressure switches and anti-short cycling protection and overload protection for compressors. Also capable of enduring challenging environments with durable prepainted, galvanized steel cabinets.
Comfort Alert™ diagnostic board streamlines troubleshooting. If service is needed, it can be done quickly with the easy-access panel and no-strip screws. Powered and non-powered convenience outlets also help simplify maintenance tasks.
Setup is simplified with a single-piece design for both rooftop and ground installations. Transportation and rigging is also easier with convenient forklift slots and lifting holes. Product is also shipped with Puron® refrigerant for environmental compliance.
Experience advanced HVAC solutions with Gemini® 38AUD split system for energy-efficient cooling, improved air quality and reliable performance for seamless integration.
Accessory and Kit Data
Split Systems Heat Pump and Condensing Units Accessory Hail Guard 15 and 20 Ton Cooling Unit 15 and 20 Ton Heat Pump CALVHLGD007A00, 008A00, 009A00
Split Systems Heat Pump and Condensing Units Accessory Outdoor Coil Grille 6 to 12.5 Ton Cooling Unit 6 to 10 Ton Heat Pump
CALOWAMB018A00 - CALOWAMB029A00, CALOWAMB037A00 - CALOWAMB042A00 Motormaster® I Head Pressure Controller Accessory for Split System Condensing Units 15 and 20 Tons
Hail Guard Accessory for Split Systems Heat Pump and Condensing Units 15 and 20 Tons CALVHLGD008A00, CALVHLGD009A00
CALOWAMB004A00-CALOWAMB006A00, CALOWAMB009A00, CALOWAMB030A00-CALOWAMB036A00 Split Systems Accessory Motormaster I Head Pressure Controller 6 to 12.5 Tons
33WIFISTAT43 Wi-Fi Thermostat
Hail Guard Accessory for Split Systems Heat Pump and Air Conditioning Condensing Units (6-12.5 Ton Cooling, 6-10 Ton Heat Pump)
Brochure
Gemini™ 38AU / 40RU Split System Air Conditioners and Heat Pumps Brochure
A World of Comfort 2025 - Brochure
Understanding the AIM Act
Staged Air Volume (SAV) System for Carrier’s Small and Medium Packaged Rooftop Units and Light Commercial Splits Systems
A World of Comfort 2025 - Brochure (Printer Version)
Configuration
33CSPREMLK PremierLink™ Retrofit Rooftop Controller Version 3.x
Guide Specifications
38AUZ / 38AUD Guide Specifications, 6 to 20 Nominal Tons
38AUZ/38AUD Guide Specifications, 21 to 88 kW (6 to 25 Tons), 50 Hz
Installation
Refrigerant Holding Charge Notification, 38AUZ/38AUD Air-Cooled Condensing units, 6 to 20 Nominal Tons
Indoor Fan Rated Airflow (cfm) Data Supplement 38AU/38AUQ/40RU/40RUQ Split Systems 6 to 20 Nominal Tons
Installation Summary Chart for 6 to 12.5 Ton Condensing Units, 6, 7.5 and 10 Ton Heat Pump Units
38AU 07-14 Gemini Air Cooled Condensing Units with Puron (R-410A) Refrigerant
38AU 16-28 Air Cooled Condensing Units with Puron (R-410A) Refrigerant
38AU 07-14 Air-Cooled Condensing Units 50 Hz with Puron (R-410A) Refrigerant
38AUD 16,25 Air-Cooled Condensing Units 50 Hz with Puron (R-410A) Refrigerant
Product Data
38AUZ/38AUD 07-25 Commercial Split Systems Air Conditioning Condensing Units, 6 to 20 Tons
38AUZ/38AUD 07-28 Air-Cooled Condensing Units, with Puron (R-410A) Refrigerant, 21 kW to 88 kW (6 to 25 Nominal Tons), 50 Hz Units
REVIT and 3D DRW Files
38AUD Packaged Air Cooled Condenser Units, Dual Circuit, Family REVIT Files
Submittal
38AUZ/D 50Hz Air-Cooled Condensing Units with Puron (R-410A) Refrigerant, Sizes: 07 to 25 (18.3 to 59.2kW)
38AUZ/D 07-28 Air-Cooled Condensing Units with Puron (R-410A) Refrigerant, 60 Hz
Warranty Card
Limited Warranty for Commercial Air Conditioning Condensing Unit with Puron Refrigerant
