The VES U/M Ultra is a high-performance undermount DC air conditioning system, designed for tight-space installations in vans, RVs, boats, and off-grid setups. Built with the same premium components as the VES Ultra, this undermount AC unit features a remote-mounted compressor, allowing for flexible installation inside or outside your vehicle or vessel.

 

Why Choose the VES U/M Ultra Undermount AC?

 

 Undermount Design – Perfect for applications where space is limited and a traditional rooftop or wall-mounted unit won’t fit.
 Compact & Modular – The multi-piece design allows installation in areas where standard AC systems can’t go.
 Rugged Durability – The compressor is heavily protected in 304 stainless steel for impact resistance.
 Easy Installation – Top- or bottom-mounted brackets make placement flexible, and electronics can be positioned near your power system.
Multiple Cable Length Options – Choose the best fit for your installation needs:

 

  • 12V System: 5-foot or 7-foot cable

  • 24V System: 5-foot, 7-foot, or 10-foot cable

  • 48V System: 5-foot, 7-foot, or 10-foot cable

 

Powerful Cooling with Flexible Mounting Options

 

The Ultra evaporator is designed for optimal airflow and cooling efficiency:

 

  • Multi-position mounting – Ceiling, floor, or cabinet installation options.

  • High flow evaporator – Direct air in nearly any direction without ducting ideal for high-mounted cabinets or ceiling mount.

  • Better air circulation – Mounting the evaporator high makes vent routing easier and improves cooling power.

 

Because of its multi-piece undermount design, the VES U/M Ultra fits into tight spaces where traditional rooftop or bulky AC units can’t be installed. Whether you need 12V, 24V, or 48V undermount air conditioning, this system is the ultimate cooling solution for off-grid applications.

 

The Best Undermount Air Conditioner for Vans, RVs & Marine Use

 

At Cruise N Comfort USA, we specialize in high-efficiency, battery-powered undermount AC systems that outperform imported alternatives. The VES U/M Ultra delivers reliable cooling without sacrificing space or efficiency.

 

Refrigerant Compatibility: Supports both R134a and R513a refrigerants.

 Refrigerant hose kits (custom lengths and pre-sized options) are available in the Upgrades section.

 

 IN STOCK – Order Today!

 

Technical Specifications:

 

VOLTAGE OPERATING RANGE:

 

 VES U/M Ultra 12L – 10-15V DC
 VES U/M Ultra 24L – 20-31V DC
 VES U/M Ultra 48L – 40-62V DC

 

CURRENT CONSUMPTION:

 

 VES U/M Ultra 12L – 38-55A DC
 VES U/M Ultra 24L – 25-33A DC
 VES U/M Ultra 48L – 8-16A DC

 

COOLING CAPACITY:

 

VES U/M Ultra 12L – 8,500 BTU

VES U/M Ultra 24L – 9,500 BTU
VES U/M Ultra 48L – 11,000 BTU

 

WEIGHT:

 

  • Evaporator – 17.8 lbs

  • Compressor – 29 lbs

  • Controller – 8.7 lbs

  • Single Fan Condenser – 7.75 lbs

 

 Warranty: 1 Year


 FEATURES:

  • SMALL SPACE SAVING DESIGN

  • EVAPORATOR BRACKETS CAN BE LOCATED ON THE TOP OR BOTTOM OF THE ENCLOSURE FOR CEILING OR CABINET MOUNTING.

  • DEEP EVAPORATOR CONDENSATION TRAY IS PERFECT FOR OFF ROAD OR HEAVY EQUIPMENT

  • COMPRESSOR CAN BE HIDDEN AWAY FROM VIEW

  • LOW POWER CONSUMPTION USING OUR ALWAYS ACTIVE ECO MODE VARIABLE COMPRESSOR SPEED TECHNOLOGY

SPECIFICATIONS FOR VES U/M ULTRA L:

VOLTAGE    CURRENT CONSUMPTION   COOLING CAPACITY 

12L- 10-15 VDC                 12L- 38-55 AMPS*                 12L- 8.5K BTU 

24L- 20-31 VDC               24L- 25-33 AMPS*                 24L- 9.5K BTU

48L- 40-62 VDC              48L-  8-16  AMPS*                 48L- 11K BTU

*Current ratings are nominal. Current ratings can fluctuate depending on accessories and or operating conditions. Maximum BTU ratings shown. BTU ratings vary depending on voltage, installation, condenser options and refrigerant charge.

All specifications and features are subject to change without notice.