Instanta WMSP3 3 Litre Wall Mounted Auto-Fill Water Boiler

The Instanta WMSP3 is a compact, wall-mounted water boiler that connects directly to a mains cold water supply and refills automatically, keeping hot water available throughout service without any manual intervention. By sitting on the wall rather than the worktop, it frees up bench space — a practical advantage in kitchens and service areas where every square metre counts.

At 3 litres, this model is sized for lower-volume environments where demand is steady rather than heavy. A small café, a staffroom, a hotel breakfast station handling a modest number of covers, or a bakery counter are the kinds of settings where it performs reliably day to day. It is not designed for continuous high-throughput service or large-batch catering, and operators running those volumes should look at a higher-capacity boiler to match the pace of service.

A few practical features make a difference in routine operation:

• A 7-day programmable timer allows heating to be scheduled around operational hours, avoiding unnecessary energy use overnight or on quiet days.
• Electronic temperature control holds water at a consistent temperature throughout service.
• A programmable filter change indicator prompts maintenance at the right interval, protecting water quality and internal components over time.
• An onboard diagnostics system flags issues early, reducing the risk of unexpected downtime mid-service.

Installation requires a mains cold water connection and a suitable power supply. The wall-mounted position needs to allow clear access for filter changes and routine servicing, so it is worth thinking through the fixing location before installation. Confirming that your existing water pressure and plumbing layout are compatible is a sensible step before ordering.

If you would like to talk through whether this model suits your service volume and setup, the team is glad to help you work it out.