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Resun CW-2500A Aquarium Chiller & Heater
Keep large aquariums and systems at the perfect temperature all year with the Resun CW-2500A, a powerful 1.5HP chiller that provides both chilling and heating. It's built for aquariums and systems up to 2,500 litres, and its microcomputer control holds your water at a steady temperature with ±0.5°C accuracy.
Temperature stability is essential for fish, corals and invertebrates, especially in marine systems and through hot Australian summers. The CW-2500A keeps your water at a constant temperature automatically, so you don't have to worry about heat spikes or cold snaps. The dual-button control and dual-screen display make it easy to set and monitor your target temperature, and it suits both marine and freshwater setups.
It's powered by an advanced, highly efficient compressor that's energy saving and environmentally friendly, with a 5,800W cooling capacity. A 3-minute delay protection feature stops the compressor restarting too quickly, which helps extend the life of the machine.
Key Features
Suitable For
Large freshwater and marine aquariums and systems up to 2,500 litres, including reef tanks, marine systems, koi and goldfish systems, and multi-tank setups
Product Specifications
| Specification | Details |
|---|---|
| Brand | Resun |
| Model | CW-2500A |
| Type | Aquarium chiller and heater |
| Power | 1.5HP |
| Cooling Capacity | 5,800W |
| Aquarium Size | Up to 2,500L |
| Temperature Accuracy | ±0.5°C |
| Voltage | 220–240V / 50Hz |
| Current | 6.5–7.5A |
| Coolant | R22 |
| Pipe Size | 1¼" |
| Dimensions | 745 x 560 x 705mm |
| Weight | 65kg |
Please note: A water pump is required to circulate water through the chiller (not included). Install the unit in a well-ventilated area with plenty of clearance around the fan so it can release heat efficiently.



