Winery chiller hire is most often called in when the glycol system is already struggling. Multiple tanks hit peak fermentation on the same day. A warm front arrives and ambient temperatures climb past what the permanent plant was designed for. The fruit came in heavier than expected and there’s more in tank than the system can comfortably hold. By the time the temperature starts moving in the wrong direction, the window to act is already short. A hire chiller connected into the existing glycol loop adds capacity within hours — no infrastructure work, no waiting on parts.
What winery chiller hire is used for
The applications fall into four categories. Each has different timing and different urgency.
Fermentation temperature control
White and aromatic varieties ferment between 12°C and 18°C. Reds typically run warmer — 20°C to 32°C depending on style. Drift outside those ranges and the ferment changes in ways the winemaker didn’t plan for. A hire chiller holds those set points through peak fermentation activity regardless of how many other tanks are running or what the ambient temperature is doing outside.
Cold stabilisation
Crash-cooling a tank before filtration and bottling means pulling temperatures down to between -4°C and -2°C and holding them long enough for tartrate crystals to precipitate out. Negative temperature chiller hire reaching as low as -15°C gives the cellar team that capability without waiting for permanent plant to free up between other jobs.
Supplemental capacity during bumper harvests
When incoming fruit volume exceeds what the permanent glycol system can handle, a hire chiller connects into the existing loop and carries the additional load. The permanent system keeps running. The hire unit handles the overflow. Nothing stops.
Emergency breakdown cover
A primary chiller that fails during active fermentation needs replacing fast. Aircon Rentals carries air-cooled chiller hire from 21kW to 1,300kW and water-cooled chiller hire from 200kW to 2,000kW. Air-cooled units go in faster with less setup. Water-cooled suits sites with existing cooling tower infrastructure that need higher efficiency under sustained load.
How a hire chiller connects to a winery glycol system
Most winery glycol systems cool a glycol/water mix that circulates through tank jackets via a primary chiller. A hire unit connects into that loop — either in parallel to add capacity, or as a standalone replacement if the primary has failed. Connection points are the supply and return headers on the glycol circuit. Pumps, hoses, and buffer tanks come as part of the package where the site requires them.
Pre-testing at the Aircon Rentals depot before dispatch means the system arrives already proven to the specification of the site. On a winery two days into harvest with tanks at temperature, that matters more than most clients expect before they’ve been through it once.
The North-West Victoria winery that called during a bumper, hot harvest needed a 500kW rental chiller with a complete package — buffer tank, pump, hoses, cabling. It was delivered and commissioned within 48 hours. Fermentation temperatures held through the remainder of crush and the winery met its contractual obligations. That outcome starts at the depot, not on the day of delivery.
Chiller types available for winery hire
Winery Air-cooled chiller Hire
Air-cooled chillers are the most common choice for winery deployments. No cooling tower required, no condenser water loop to set up — just power, the glycol connection, and adequate airflow clearance around the unit. The air-cooled fleet runs from 21kW for a single small tank through to 1,300kW for large cellar operations. Most emergency hire situations use air-cooled units because the setup is faster and the site requirements are simpler.
Winery Water-cooled chiller Hire
Water-cooled chillers suit wineries with existing cooling tower infrastructure. They run more efficiently under sustained high load — relevant for larger operations running through an extended crush period where energy cost over several weeks adds up. The water-cooled fleet runs from 200kW to 2,000kW.
Winery Heat pump chiller Hire
Heat pump chillers provide cooling and heating from a single unit. For wineries in cooler regions that need heating during cold soaks or barrel hall management through winter, a heat pump chiller hire removes the need to bring in separate heating equipment alongside cooling.
Winery Negative temperature chiller Hire
Negative temperature chillers reach as low as -15°C. Purpose-built for cold stabilisation, low-temperature fermentation profiles, and applications where standard glycol temperatures aren’t cold enough. The negative temperature chiller hire fleet runs from 60kW to 800kW.
Planning chiller hire around harvest
The wineries that get through harvest without a cooling incident are usually the ones that made decisions before crush started. A hire chiller reserved and tested ahead of the vintage is available the moment it’s needed. One called in during an active breakdown competes for stock with every other operation that had the same problem on the same hot week.
For the scenarios that push glycol systems to their limits before outright failure — bumper crops, heatwaves, degraded equipment — see winery cooling under capacity. For what to do when the primary system goes down completely during crush, see winery cooling failure.
Power continuity matters alongside chiller hire. A hire chiller without a reliable power supply solves nothing. For remote sites or facilities running at electrical capacity during crush, winery generator hire alongside the chiller removes that variable entirely. For cold storage requirements beyond the fermentation tanks — grapes in bins, barrels, finished goods — see winery refrigeration hire.
The winery industry page covers the full range of temporary HVAC, refrigeration, and power solutions for winery operations. For a contingency plan that covers cooling, refrigeration, and power before harvest begins, our team can work through site requirements in advance.
Aircon Rentals operates 24/7 across Australia for both planned harvest support and emergency chiller hire. Call 1800 626 996 or contact us online to discuss winery chiller hire options before harvest begins.
