The HC series use environmentally friendly R134 refrigerant. Not as quiet or efficient as the newer HS HK series Titanium chillers. 2021 is the last year the HC models will be available so get in quick. The HCs have a reputation with >19yrs of proven performance. HC-500A 1/2hp is suitable for up to ~1000L but optimal for 400 - 600L.

Hailea HC-500A Water Chiller