38AUD Gemini® Commercial Split System Cooling Only

  • California Prop 65

Commercial Split System 
Cooling Only
with Puron® Refrigerant

10 to 20 Nominal Tons

The GEMINI® 38AU series outdoor units and matched with the 40RU series indoor air handlers offer a wide variety of options for your HVAC application needs. This series is designed for long dependable operation whether it's a rooftop or on-the-ground installation. All GEMINI 38AU Condensing Units and 40RU Fan Coils use environmentally sound Puron® refrigerant. Together, they create a reliable split system that provides easy solutions to a wide range of commercial HVAC needs.

Performance Features

  • 38AUD two cooling stages with EERs from 11.0 to 11.2
  • ASHRAE 90.1 Efficiency Compliant
  • Standard crankcase heater
  • Compressor vibration isolation
  • Low ambient temperature control
  • Unit performance certified in accordance with ARI standard 340/360

Reliability Features

  • High and low-pressure switches
  • Anti-short cycling protection
  • Prepainted, galvanized steel cabinets that passes 500-hour salt-spray test
  • Compressor overload protection
  • Scroll compressor
  • E-Coat coil protection
  • UL, UL, Canada or ETL approved

Installation Features

  • Shipped with Puron (R-410A) refrigerant partial charge
  • Single-piece design
  • Perimeter base rail with forklift slots and lifting holes facilitates rigging
  • Suitable for mounting on the ground or the rooftop
  • 24V control circuit transformer permits quick, easy wiring of thermostats

Maintenance Features

  • Comfort Alert™ diagnostic board
  • Powered and non-powered 115-v convenience outlet
  • Compressor access panel with easy grip handle
  • Easy starting, no-strip screw feature
  • Non-fused disconnect switch

Standard Limited Warranty

  • 5 years parts only on compressor
  • One year parts only on all other parts

38AUD/40RUA AHRI Cooling Ratings

UnitCooling StagesNominal Capacity (Tons)Net Cooling Capacity (MBH)Total Power (kW)EERIEER

AHRI = Air-Conditioning, Heating and Refrigeration Institute
ASHRAE = American Society of Heating, Refrigerating and Air Conditioning, Inc.
EER = Energy Efficiency Ratio
IEER = Integrated Energy Efficiency Ratio
COP = Coefficient of Performance

1. Rated in accordance with ARI Standard 340/360---07, as appropriate.
2. Ratings are based on:
- Cooling Standard: 27°C (80°F) db, 19°C (67°F) wb indoor air temp and 35°C (95°F) db outdoor air temp.
- IEER Standard: 27°C (80°F) db, 19°C (67°F) wb indoor air temp and 4 various outdoor temperatures.
3. All units comply with ASHRAE 90.1 Energy Standard for minimum EER and IEER requirements.

Factory-Installed Options

  • Non-fused Disconnect
  • Premium, E-coated condenser coil
  • Convenience outlet (powered)
  • Low ambient temperature Motormaster® control
  • Louvered hail guards
  • Modulating unloading device (sizes 12, 16, and 25)

Field-Installed Accessories

  • Low ambient temperature Motormaster® control
  • Louvered hail guard
  • Programmable thermostats