Water heater and expansion vessel replacement for a restaurant, Borough Market

The site and the reported fault

A restaurant and commercial kitchen in Borough Market, London, had a water heater leaking. We visited the site on 3 November 2026 after water was reported leaking around the water heater.

What the inspection found

On inspection the expansion vessel (the vessel fitted to the water heater) could not hold pressure, the connections were corroded, and water leaked from the body of the water heater.

The work

We removed the existing water heater and expansion vessel and installed the replacement units. The scope was:

• removing the existing water heater and expansion vessel
• installing the replacement water heater and expansion vessel
• checking the installation under mains pressure (the pressure from the mains supply)

The equipment

We install and service Ariston water heaters and expansion vessels. The job sheet lists the equipment for this job as an Ariston Andris Lux 10L, 2kW electric water heater and an Ariston Extravarem LC 2L expansion vessel.

The result

The site now has a replacement electric water heater and expansion vessel, following the reported leak and the inspection findings. Once the replacement units were in, the installation was checked under mains pressure. No leaks were detected, and the job was handed back to the customer.

Where to go next

Climate Flow Limited works across London, Oxfordshire and surrounding areas. For other completed jobs, see Our Projects. For the commercial refrigeration work we carry out in kitchens like this one, see commercial refrigeration services, or the full list of services.

This guide is general information, not a survey or a quote for your site; every system is different, so an engineer needs to see yours before any work is priced.