Instanta WMSP156 15 Litre Wall Mounted Auto Fill Water Boiler

Name: Instanta WMSP156 15 Litre Wall Mounted Auto Fill Water Boiler
Brand: Instanta
SKU: WMSP156
Price: 1284.0 GBP
Availability: InStock

Get a quote

View more products from this brand

The Instanta WMSP156 is a wall-mounted, auto-fill water boiler that draws directly from the mains cold water supply and maintains a continuous supply of near-boiling water throughout the service day. Because it refills automatically, there is no manual topping up and no risk of running dry during a busy period. The wall-mounted format keeps the unit off worktops and floors entirely, which is a practical advantage in compact service areas, hospitality suites, and staff canteens where counter space is often at a premium.

In day-to-day service, the unit performs reliably at steady throughput levels typical of small to medium-volume sites — cafés, hotel serveries, smaller restaurant operations, and similar environments where hot water demand is consistent rather than exceptionally high. The stainless steel construction holds up well under commercial use, and the built-in diagnostics help flag issues before they cause unexpected downtime.

Several features are worth noting from an operational standpoint:

ECO mode reduces energy draw during quieter periods without affecting water availability
Adjustable temperature control lets operators match output to the application
A 7-day programmable timer aligns operating hours with your actual service schedule
A filter change indicator removes guesswork from maintenance routines
Built-in diagnostics support early fault detection and help reduce unplanned downtime

Installation requires a mains cold water connection and a hardwired single-phase electrical supply. Both services must be accessible at the intended mounting position — worth confirming before ordering, particularly in older or refurbished premises where pipework and electrical points may not be ideally located. A qualified plumber and electrician will be needed for the installation.

The WMSP156 is well suited to sites where demand is steady and space is limited. If your operation runs multiple simultaneous service points or faces significantly higher peak throughput, it is worth considering a higher-capacity model before committing to this one.

If you would like to talk through whether this unit matches your service volumes or want to clarify the installation requirements at your site, the team is happy to help before you go ahead.

Frequently asked questions

Is this unit suitable for a busy café serving a high volume of hot drinks?

The WMSP156 is well matched to small and medium-volume sites with steady, consistent demand throughout the day. If your peak periods involve very high simultaneous throughput — for example, a large café with multiple service points all drawing hot water at once — it is worth discussing a higher-capacity unit before ordering, as a larger boiler may serve you better.

What does installation involve and do I need a specialist?

The unit requires both a mains cold water connection and a hardwired single-phase electrical supply at the mounting position. You will need a qualified plumber and a qualified electrician to carry out the installation. Before ordering, it is sensible to confirm that both services are accessible in the right location, particularly in older premises where existing pipework or electrical points may not line up with where you plan to mount the boiler.

How does the programmable timer help with running costs?

The 7-day timer lets you set the boiler to switch on and off in line with your actual service hours, so it is not drawing power overnight or on days when the site is closed. Combined with ECO mode, which reduces energy draw during quieter periods within the service day, this can make a meaningful difference to running costs over time without affecting water availability when you need it.

Drawer menu