Cellar Cooling Systems for Kent Pubs, Restaurants and Wine Stores

For any pub, bar, restaurant, or wine merchant in Kent, the cellar is the engine room of the business. Beer served at the wrong temperature loses quality, flavour, and customer satisfaction — and a warm cellar in summer is not just uncomfortable, it is a direct threat to your product and your reputation. A properly specified and maintained cellar cooling system is one of the most important investments a licensed premises can make.

Kent's varied building stock — from historic coaching inns and Victorian pubs to modern restaurant conversions — means that cellar cooling requirements vary significantly from one premises to the next. This guide covers the main system types available, typical installation costs, what to look for in a specification, and how to keep your system running efficiently year-round.

Why Cellar Temperature Matters

The Cask Marque and CAMRA guidelines recommend a cellar temperature of 11–13°C for cask ale, while keg beers and lagers are typically stored at 8–12°C. Wine storage requires 10–15°C depending on the variety, and soft drink post-mix systems require consistent cool temperatures to maintain carbonation and flavour. Even a few degrees above the recommended range during a warm Kent summer can result in cloudy beer, over-carbonation, and spoilage — all of which translate directly into waste, customer complaints, and lost revenue.

Types of Cellar Cooling System

There are three main types of cellar cooling system used in UK licensed premises, each suited to different cellar sizes, layouts, and heat loads. Understanding the differences is important before specifying a system, as the wrong choice can result in inadequate cooling, excessive noise, or unnecessary running costs.

Integral systems are the most common choice for smaller pubs and bars with a single cellar and direct external wall access. They are straightforward to install, cost-effective, and relatively simple to service. The main limitation is noise — the compressor runs inside or immediately adjacent to the cellar, which can be audible in quiet premises — and the requirement for a suitable external wall through which to duct the condenser heat.

Remote split systems separate the compressor from the cellar entirely, with refrigerant pipework connecting the indoor evaporator to an outdoor condenser unit. This eliminates compressor noise from the cellar, allows the condenser to be sited in a yard, on a roof, or in a plant room, and provides greater cooling capacity for larger heat loads. Remote systems are the preferred choice for medium to large premises and any situation where noise is a concern.

Sizing Your Cellar Cooling System

Correct sizing is critical. An undersized system will struggle to maintain temperature during busy periods and hot weather, while an oversized system will short-cycle — switching on and off rapidly — which reduces efficiency and shortens component life. Proper sizing requires a heat load calculation that takes into account the cellar volume, insulation level, the number of kegs and casks stored, the number of beer lines running through the cellar, the ambient temperature above and around the cellar, and the heat generated by any refrigeration equipment (bottle coolers, glass washers) in the same space.

Installation: What to Expect

A standard integral cellar cooling installation typically takes one day for a single-cellar premises. The process involves core-drilling through the external wall for the condenser duct, mounting the unit at high level on the cellar wall, connecting the electrical supply (a dedicated circuit from the consumer unit is required), commissioning the system, and setting the thermostat to the correct operating temperature. The electrical work — including the dedicated circuit and any necessary consumer unit modifications — must be carried out by a qualified electrician and notified under Part P of the Building Regulations.

Remote split system installations are more involved, typically requiring one to two days depending on the distance between the indoor and outdoor units and the complexity of the pipework run. The refrigerant pipework must be installed and charged by a Refcom-certified F-Gas engineer — the same qualification required for domestic and commercial air conditioning installation.

Running Costs and Energy Efficiency

A typical integral cellar cooling unit running 24 hours a day consumes between 1.5 and 3 kWh per day in a well-insulated cellar, rising to 4–6 kWh per day in a poorly insulated or high-heat-load cellar. At current commercial electricity rates of approximately 25–30p/kWh, this equates to annual running costs of between £140 and £660 per year for the cooling unit alone. Improving cellar insulation — particularly the ceiling and any walls adjacent to warm spaces — is the single most cost-effective way to reduce running costs and improve system performance.

Annual Servicing and Maintenance

Cellar cooling systems should be serviced at least once a year, ideally in spring before the summer peak. A standard annual service includes cleaning the evaporator and condenser coils, checking and cleaning the condensate drain, verifying refrigerant pressures, checking electrical connections and controls, and testing the thermostat accuracy. Neglecting annual servicing is the most common cause of premature system failure — blocked coils reduce efficiency and cause the compressor to work harder, shortening its lifespan significantly.

Typical Costs for Kent Premises

All prices are indicative for Kent and the South East and include labour, materials, and VAT. Remote system costs vary significantly depending on pipework run length and condenser siting. A free site survey is the only reliable way to obtain an accurate price for your specific premises.