OptiClimate Water Cooler – Closed Loop Grow Room Chiller
OptiClimate Water Cooler – Closed Loop Grow Room Chiller
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Description
Run Water-Cooled Climate Control Without a Mains Supply
OptiClimate water coolers let you run an OptiClimate water-cooled climate control system as a fully closed loop, with no connection to a mains water supply and nothing going down the drain. It sheds the heat picked up from your room by transferring it from the water or glycol to colder ambient air, so it must be sited outside. The sealed loop means no evaporation and filling once, and a pump is included. Operation is very quiet, from 28 dB(A), energy consumption is low, and no air conditioning engineer or cooling gas is required.
Key Benefits
- Capacity from 4 to 53 kW across compact and industrial models
- Fully closed system with no water consumption once filled
- From 28 dB(A) in operation, quiet enough for residential and commercial buildings
- Pump included with every water cooler
- Very long runs possible between indoor and outdoor units
- One outdoor unit can serve multiple indoor units when correctly sized
Heat Build-Up and the Cost of Running Water to Waste
Water-cooled climate control is the quietest way to hold a grow room temperature, but plumbing it to mains and drain is not an option in most buildings. Without proper heat rejection, temperature climbs under the lights, humidity follows and you get excessive stretch, poor nutrient uptake and airy flowers. A closed loop recycles the same charge indefinitely, so the room stays in range and the water bill does not move.
How to Use
- Site the unit outside with clear air on the fan side
- Connect to your OptiClimate system and fill the loop once with water or glycol
- Wire it in with 3-core mains cable and 2 x 13 amp UK plugs (not included), one for the chiller fan and one for the pump
- Pairing with a Revomax: a fan/pump controller is required and is not included
Technical Specifications
- Type: closed-loop dry cooler for water-cooled OptiClimate units
- Works with: OptiClimate Pro 3, Pro 4 and Revomax II
- Coolant: water or propylene glycol mix
- Water use: none once filled (sealed loop)
- Sizing: 1 kW of cooler per 1 kW of unit output
- Coil tube: 3/8" diameter
- Fin spacing: 2.1 mm
- Pump: included
- Pump supply: 230 V 1-phase (basic) or 400 V 3-phase (inverter)
- Pump connection: 1" female
- Cooler connections: male thread
- Siting: outdoors, 3 m clear in front of the fans
- Not included: 3-core mains cable, 2 x 13 amp UK plugs, fan/pump controller
| By size | 4.5kW Compact Vertical | 9kW Compact Vertical | 14kW Compact Vertical |
|---|---|---|---|
| Cooling capacity | 4.5 kW | 9 kW | 14 kW |
| Fan power | 60 W | 120 W | 180 W |
| Noise | 28 dB(A) | 31 dB(A) | 33 dB(A) |
| Fans | 1 x 350 mm | 2 x 350 mm | 3 x 350 mm |
| Water content | 2 L | 4 L | 6 L |
| Connections | 1/2" M | 3/4" M | 3/4" M |
| Dimensions | 65 x 32 x 41cm | 120 x 32 x 41cm | 175 x 32 x 41cm |
| Weight | 7kg | 13kg | 19kg |
| By size | 18kW Compact Vertical | 32kW Compact Vertical | 12kW Industrial Vertical |
|---|---|---|---|
| Cooling capacity | 18 kW | 32 kW | 12 kW |
| Fan power | 240 W | 360 W | 270 W |
| Noise | 34 dB(A) | 36 dB(A) | 32 dB(A) |
| Fans | 2 x 350 mm | 6 x 350 mm | 1 x 500 mm |
| Water content | 8 L | 21 L | 6 L |
| Connections | 1" M | 1 1/4" M | 3/4" M |
| Dimensions | 120 x 32 x 81cm | 175 x 32 x 81cm | 102.5 x 60 x 93.3cm |
| Weight | 26kg | 52kg | 63kg |
| By size | 17kW Industrial Vertical | 32kW Industrial Vertical | 32kW Industrial Horizontal |
|---|---|---|---|
| Cooling capacity | 17 kW | 32 kW | 32 kW |
| Fan power | 270 W | 600 W | 360 W |
| Noise | 32 dB(A) | 40 dB(A) | 36 dB(A) |
| Fans | 1 x 500 mm | 1 x 630 mm | 6 x 350 mm |
| Water content | 11 L | 19 L | 21 L |
| Connections | 1" M | 1 1/4" M | 1 1/4" M |
| Dimensions | 102.5 x 60 x 93.3cm | 160 x 60 x 98.3cm | 160 x 60 x 98.3cm |
| Weight | 76kg | 125kg | 125kg |

FREE Express Delivery on orders over £99. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.
