Coldroom Refrigeration Systems

A cold room, like any refrigeration system, uses an evaporator, a condenser and controller. We provide efficient and reliable systems.

How does a coldroom work?

There are two main types of refrigeration system associated with coldrooms. Integral refrigeration has the system mounted on the cold room itself whereas remote refrigeration has it sited away from the cold room.

Integral refrigeration can be wall or ceiling mounted and is most suitable for well-ventilated areas only. It is the simplest, most straightforward and least expensive. With this format, the evaporator and condensing unit are built into the coldroom.

Remote refrigeration is the most popular and reliable method. It offers improved energy savings and life span over integral refrigeration.

With remote systems, the coldroom’s condensing unit is sited elsewhere, often outside, so any noise and heat from its operation is taken away. Remote condensing units are supplied in a weatherproof housing as standard.


Williams offers a variety of refrigerants, depending on the application for which the coldroom is designed. We work with suppliers to provide the greenest, most environment-friendly coldroom solutions.

Condensing Units

Williams offers three main types of Condensing units - Hermetic, Scroll and Semi-hermetic. All units are quiet, energy efficient and easy to install.


Williams provides three types of evaporators that use low energy fans. The three types of evaporators are low profile, box evaporator and the unique Williams Pod evaporator which is housed on the coldroom roof offering low running costs, easy installation and ensures the internal storage area is maximised.

Coldroom Control Panel
Coldroom Control Panel

Control Panels

A key component with a cold room is temperature control. The safest and most reliable option is the Williams control panel. Housed in a smart stainless steel body, it has a built in isolator, volt-free contactors and a clear temperature display. Low-cost models with plastic housings are available for those on a tight budget, but they will require a separate isolator. Bespoke control panels are also available.

Contact Us

Request a Quote - Coldroom Refrigeration Systems

    Contact numbers for Williams

    Thank you for your enquiry - please enter your details, and a member of Williams Refrigeration will contact you shortly. Alternatively you can always call us:

    Main Office:
    01553 817 000
    Cabinet Sales:
    01553 817 100
    Coldroom Sales:
    01553 605 510
    Warranty / Service:
    01553 817 150
    01553 817 017
    Transport / Delivery:
    01553 817 108