Unit Coolers
Warehouse
Large Unit CoolersCondensing Units & Packaged Systems
PRO3 Packaged Refrigeration Systems
Top MountRemote Compressor Units
0.75 - 22 HPCondensers & Gas Coolers
Control & Automation
Industrial Products & Rack Systems
Refrigeration Racks Large Unit Coolers Adiabatic Gas Coolers Large Condensing Units
Dual Refrigerant Class Systems
The industry is shifting to A2L refrigerants — and Heatcraft makes the transition seamless.Our dual refrigerant class systems operate on A1 today and easily convert to A2L tomorrow with a simple RDS Kit upgrade.
Simplify Stock. Maximize Flexibility.
Fewer items to track. Less shelf space. Lower risk of stocking the wrong configuration. Better forecasting without refrigerant-specific guesswork.
Sell now. Switch later.
Not every customer is ready to transition to A2L refrigerants – and that’s okay. Heatcraft’s dual refrigerant class systems remove that hesitation by offering flexibility.
No surprises. Just solutions.
You won’t be caught off guard by local mandates or forced into costly, last-minute retrofits. Instead, you’ll be ready - with continuity, confidence and control.
Tools that support every step
- Refrigerant compatibility tools.
- Safety and compliance guidelines.
- Parts lookup and product specs.
- Charge calculators and install resources.
Technical Resources
Sales Tools
Compliance & Training
Dual-Refrigerant Systems FAQ
- My customer complains that his product temperature is not where it needs to be. I installed a recording thermometer and the temperature log indicated the box has reached the required room temperature. Have I missed something here? How is this possible?
- I just installed a new evaporator. I’m having wide expansion valve swings preventing me from setting superheat and I have uneven frost patterns. My expansion valve is sized correctly. I’m out of ideas.
- My evaporator feeds okay for a while then the suction pressure drops to the point the low-pressure switch cycles the compressor off. For some reason...
My EEV does not open on initial startup and indicates an E-7 error code.
There could be many factors, but the most common is the transformer tap is not plugged into the spade that closest resembles the incoming voltage. Set the 208/240 tap on the transformer accordingly
Still Have Questions About A2Ls?
Talk to a Product Expert or Request a Call.