Refrigeration capabilities · Indoor A2L + water-cooled
Can Norlake Scientific provide indoor A2L refrigeration? Yes. Norlake Scientific provides UL 60335-2-89-listed indoor A2L condensing systems, air-cooled or water-cooled, engineered in-house. Specify indoor A2L or water-cooled refrigeration with the team that designs and manufactures the matched system for your controlled-temperature room.
The short answer
Yes. Norlake Scientific manufactures indoor A2L condensing units and matched refrigeration systems for R-454A and R-454C. Air-cooled and water-cooled configurations are engineered in-house for controlled-temperature rooms.
Installing an indoor A2L system requires certification. Not every refrigeration manufacturer carries it—ask yours. Norlake Scientific does. Our indoor A2L condensing systems are UL 60335-2-89 listed, air-cooled or water-cooled. Final configuration and installation requirements are confirmed during engineering review.
A2L requirements are addressed through equipment design, testing, certification, and installation. For a controlled-temperature room, the enclosure, loads, refrigeration, controls, and site conditions must be evaluated together.
01 · Define
02 · Engineer
03 · Confirm
UL identifies UL 60335-2-89 as a key standard for commercial refrigeration equipment with incorporated or remote refrigerant units and notes that mitigation requirements are addressed in the design, testing, and certification of the refrigeration equipment.
UL context ↗
Room conditions, controls, and construction are confirmed during engineering review.
Some controlled-room suppliers focus on the insulated enclosure and source refrigeration equipment from a third party. Norlake Scientific designs the room and matched refrigeration as one coordinated package.
In-house
Refrigerated Solutions Group designs and builds its own refrigeration systems for the required temperature and capacity.
Room + load
Condensing equipment, evaporator, controls, and operating conditions are selected as a coordinated system.
Project-specific
Indoor A2L, water-cooled heat rejection, unusual loads, and tight mechanical-space constraints can be addressed during engineering review.
Direct
The engineering team responsible for the refrigeration system remains part of the specification conversation.
Both options begin with the required room conditions and site constraints. The final architecture is selected during engineering review—not from a generic equipment schedule.
A productive engineering review begins with the operating conditions and site—not a condensing-unit model number.
Share the required temperature range, setpoint profile, room dimensions, panel configuration, and preferred refrigerant requirements.
Account for product, equipment, people, lighting, infiltration, door openings, and the expected operating pattern.
Confirm electrical service, water-loop conditions, equipment location, piping distance, clearances, and mechanical-space limits.
Coordinate controls, alarms, monitoring, redundancy, applicable codes, specifications, and listing scope for the final configuration.
Regulatory context
Laboratory and process refrigeration was not included in the 2026 compliance relief. New controlled-environment rooms in these applications remain on the low-GWP requirement now in force. If a project timeline was built on the assumption that the requirement moved, it should be re-checked.
Direct answers for engineering and procurement teams evaluating non-standard refrigeration arrangements for controlled-temperature rooms.
If the room needs indoor A2L equipment, water-cooled refrigeration, or another non-standard configuration, we’ll review the operating conditions, site constraints, utilities, and listing requirements as one system.