How to Cool an Autoclave Quickly? Water Cooling

Water jacket
cooling system

Products for water cooling:

Water Jacket A8

3300 UAH

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Water Jacket A16

3700 UAH

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Water Jacket A24

4100 UAH

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Water Jacket A32

4500 UAH

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Water Jacket A40

4900 UAH

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How does water cooling work?

How to speed up temperature reduction in an autoclave

Many autoclave users are well aware of this situation: sterilization is already complete, but you have to wait for hours until the device cools down naturally. This delays the process, creates inconvenience, and takes precious time. What if the autoclave could be cooled in just one hour? This option really exists thanks to a modern water cooling system.

In this article, we’ll explain how water cooling works, its advantages, and how to equip your autoclave with this feature.

Principle of water cooling operation

Water cooling in an autoclave is implemented using a so-called “water jacket”—a special metal shell around the body. After sterilization is complete, special hoses are connected and cold running water is supplied into the jacket. It moves continuously inside the inner shell and evenly removes heat, which allows the device’s temperature to drop quickly. The operating scheme looks very simple yet effective:

water enters through the lower nozzle,
envelops the autoclave body inside the jacket,
exits through the upper nozzle.

This is a continuous flow-through system. Importantly, there is no additional pressure in it, so use is absolutely safe for both the user and the autoclave itself.

Basic rules of use

To ensure the system works efficiently and without risks, follow a few simple rules:

Do not block the water outlet. The flow must be free, otherwise cooling will not occur.
Turn on cooling only after the temperature in the autoclave drops below 110 °C
The colder the water and the higher the flow rate—the faster the autoclave will cool.

Advantages of the water jacket

Using water cooling has several significant advantages at once:

Controlled and safe temperature reduction process. There are no sharp temperature drops, so the autoclave is not subjected to excessive stress.
Significant time savings. If normal natural cooling takes 6–12 hours, with a water jacket the autoclave cools down in just 1–2 hours.
Device durability. Thanks to the water jacket, the autoclave body and parts last longer.
Quick preparation for the next loading cycle. This is especially important for those who work with large volumes of canning.

What determines the cooling speed?

Although the system is effective in itself, the rate of temperature decrease may vary. It depends on:

the model and size of the autoclave,
the number of jars or retort pouches inside,
the ambient air temperature,
the temperature of the water supplied to the jacket,
the flow pressure

Which autoclaves is it suitable for?

Water cooling is suitable only for UTEHO stainless steel autoclaves of the “A” series. It can be ordered together with a new device directly on our website. And if you already have an “A” series autoclave and want to add the cooling function, a modification is possible. To do this, you send your autoclave to the factory, where specialists install the water jacket and check the technical condition of the device free of charge. This is convenient, safe, and guarantees a high-quality result.

Advantages of water cooling for the autoclave

Water cooling of the autoclave is a solution that allows you to significantly speed up work and make the canning process even more convenient. You save time, get controlled cooling, and extend the service life of your equipment.

Thanks to its simple operating principle and reliability, the water jacket system has already become one of the most popular innovations among UTEHO autoclave users.

01.09.2025

Author: UTEHO Editorial Team
Reviewed by: UTEHO Technical Department Specialists

UTEHO Expert Editorial Team

The UTEHO team develops autoclaves and accessories for home food preservation. All informational articles, guides, and recommendations are tested in real UTEHO autoclaves before publication.

Our content is based on practical experience, technical expertise, recommendations from UTEHO engineers and technologists, as well as feedback from our customers.

Practically tested in UTEHO autoclaves

Reviewed before publication

Content is regularly updated