EcoPlus® Water Chiller - 1/2 HP - 3/4in - For Pump Sizes 317 GPH to 793 GPH

1/2 HP Reservoir Cooling for Mid-Size Hydroponic Systems

The EcoPlus® 1/2 HP Water Chiller keeps reservoir temperatures stable for healthy root development in mid-size hydroponic and recirculating systems. A pure titanium evaporator resists corrosion in continuous water contact, while the freon-free R134a refrigeration circuit cools water from 37°F to 90°F with high energy efficiency and no ozone-depleting chemicals.

Built for systems running pumps between 317 and 793 GPH, the 3/4in fitting size integrates cleanly into standard reservoir plumbing without adapters. A microcomputer-controlled digital LCD display makes setting and monitoring the target temperature straightforward for growers managing multiple reservoirs.

Key Features & Benefits

• Pure Titanium Evaporator — anticorrosive construction built for long-term use in hydroponic and aquatic environments.
• R134a Refrigeration System — freon-free, environmentally safe, and cools water across a 37°F to 90°F range.
• Digital LCD Display — microcomputer-controlled for precise, repeatable temperature settings.
• Overcurrent Protection & Memory — protects the compressor and retains your last temperature setting after a power interruption.
• 3/4in Fittings, 264W: matched to pump sizes 317-793 GPH at 4.4A, 120V, 60Hz.

Who Should Use This

Growers running mid-size hydroponic reservoirs, recirculating systems, or freshwater/saltwater aquariums who need consistent temperature control at moderate pump flow rates. A natural step up from smaller chiller models for growers scaling reservoir volume.

Compatibility

Pump size: 317-793 GPH — Fittings: 3/4in — Power: 264W, 4.4A, 120V/60Hz — Dimensions: 21in W x 15.5in D x 22in H. Pair with an EcoPlus pump filter bag (#728188 or #728190) to protect the evaporator from debris.

Frequently Asked Questions

What temperature range does this chiller support?

The EcoPlus 1/2 HP chiller cools water from 37°F to 90°F. This range covers the vast majority of hydroponic reservoir and aquarium cooling needs.

How do I know if the 1/2 HP model is the right size for my system?

Match your circulating pump's flow rate to the chiller's rated range of 317-793 GPH. A pump outside this range will either underload or overload the chiller's cooling capacity, reducing efficiency.

Is a pump filter bag required?

A pump filter bag isn't strictly required, but EcoPlus recommends using one (#728188 or #728190) to keep debris out of the evaporator and extend the chiller's service life. Skipping the filter bag risks debris buildup inside the evaporator over time.

Is R134a refrigerant safe for hydroponic use?

Yes — R134a is a freon-free, environmentally safe refrigerant widely approved for consumer and commercial cooling equipment, with no ozone-depleting compounds. It also delivers strong energy efficiency compared to older refrigerant types.