Split-Pak A2L™ Remote Systems

HIGH QUALITY, ENERGY-SAVING COMPONENTS SIZED TO FIT YOUR SPECIFIC REQUIREMENTS

Master-Bilt is leading the way in providing next-gen refrigeration with Split-Pak A2L™ refrigeration systems.

Featuring R-454A and R-454C refrigerants, these future-proof systems deliver compliance, efficiency, and sustainability backed by rigorous field testing to ensure proven reliability.

At the same time, we remain committed to supporting our customers with legacy R-449A systems.

Visit our dedicated resource page for information about these units.

Remote System Design

Master-Bilt’s Split-Pak A2L split refrigeration systems for walk-ins feature a condensing unit with matching evaporator coil. With outdoor systems, the condensing unit is located away from a walk-in cooler or freezer, usually outside a building or on a roof, while the evaporator coil is inside the walk-in. Indoor models with the condensing unit mounted on top of the walk-in are also available.

Outdoor Units Can’t Be Used Indoors

While A2L refrigerants are classified as low toxicity/low flammability, you must only use A2L refrigeration systems indoors that are fitted with the appropriate components to maximize safety.

Using outdoor condensing units for indoor applications puts you at risk of agency violations and fines.

Master-Bilt Has the Indoor Solution

Not all manufacturers offer indoor A2L systems – Master-Bilt does.

Split-Pak A2L™ remote condensing units are UL certified for indoor applications, making Master-Bilt one of the first manufacturers in the industry to offer this capability.

Indoor systems include integrated refrigerant-leak mitigation devices on evaporator coils and condensing units for maximum safety.

Split-Pak A2L Models Should Be Used When:

  • Larger capacity systems are needed
  • Height above the walk-in is restricted
  • Taking the heat outside and removing load from the HVAC system is important
  • Lower noise level inside the space is important
  • Un-chilled product is loaded into a walk-in and needs to be pulled down to the appropriate storage temperature
  • You expect frequent walk in door openings

The Best Warranty in the Industry

18 Month Parts & Labor Standard; Optional Extended Compressor Warranty Available


Optimizes energy savings by removing workspace heat

Eco-friendly refrigerant provides maximum sustainability

Fully customizable with the widest range of options

Featuring eco-friendly refrigerant

Master-Bilt leads the way in adopting low-GWP refrigerants, staying ahead of the curve with emerging regulatory standards. No single refrigerant meets every need. That’s why we continually test and integrate a diverse mix, including A2Ls and CO₂, to deliver versatile, regulation-ready solutions.

 

Master-Bilt’s split refrigeration units for walk-ins are pre-piped and pre-wired for quick and easy installation. Split-Pak A2L systems are equipped with scroll compressors for maximum energy efficiency, increased reliability and quieter operation.

Condensing Unit Standard Features

  • DOE and SNAP compliant
  • Range from 1/2 to 15 H.P.
  • Scroll compressors in all units
  • With or without matching evaporator coils
  • Factory assembled on a galvanized steel angle leg base.
  • Generously-sized condenser for dependable performance
  • Pre-piping kit including sight glass
  • Pre-wiring kit
  • Suction accumulator
  • Preset non-adjustable high and low pressure controls for medium temp units. Non-adjustable high and adjustable low pressure controls for low temp.
  • Crankcase heater
  • Head pressure control valve ensures proper operation in low ambient conditions
  • Suction service valve
  • Heavy-duty galvanized steel base
  • Liquid line filter/drier
  • Pre-wired electrical control panel
  • Compressor contactor
  • Defrost heater contactor (when required)
  • Rifled tubes in condenser add efficiency
  • Variable speed fan motors
  • Large liquid receiver (for max. 100 ft. line run)
  • One year limited compressor warranty (optional four year extended warranty available)

Condensing Unit Options

  • Special voltages
  • Insulated and heated receiver (thermostatically controlled)
  • Coated condenser coils
  • Oil separator
  • Phase loss/low voltage monitor
  • Factory pre-assembled evaporator coil (includes factory pre-mounting of thermostatic air control and expansion valve)
  • Factory pre-charged system for 5 HP and under with quick connect liquid and suction line sets up to 50 ft. (specify length when ordering)
  • Adjustable low pressure control for medium and high temp units
  • Dual pressure control (adjustable)
  • Circuit breaker
  • Suction filter
  • Fan cycling switch
  • Liquid line solenoid valve (shipped loose)
  • Timer for medium temp units
  • Heavy-duty rack base
  • Extended four year limited compressor warranty

Evaporator Coil Standard Features

  • Energy saving LogiTemp® electronic controller system 
  • Properly sized expansion valve
  • Room thermostat
  • Energy efficient EC motors on single phase coils
  • Electric defrost models feature defrost termination/fan delay controls and drain line heaters
  • Standard voltages: 115/60/1 (medium and high temp air defrost models), 208-230/60/1 and 208-230/60/3

Evaporator Coil Pre-Configured Options