Santon covers the small end of electric water heating: point-of-use units that sit at the sink rather than serving a whole property. Three ranges, in 7, 10 and 15 litre capacities, plus instantaneous Powerpack heaters at 7kW and 9kW.
The choice comes down to two questions. Vented or unvented, which decides whether you need a G3 qualified installer and a vented tap. And whether you need a thermostatic mixing valve, which lets you store water hotter and still deliver it safely.
Santon Aquarius
The vented, point-of-use range, fed either from the mains or a cold water cistern. Over-sink units dispense through a built-in spout; under-sink units must be paired with a vented tap, explained in our guide to what vented taps are.
- Vented, so no G3 qualification needed
- Under-sink or over-sink
- The cheapest route to hot water at a single basin




Santon Aquaheat
Unvented, mains pressure, with copper internal containers and an expansion relief valve supplied as standard. In 7, 10 and 15 litres, at 3kW (the 10 litre is 2.2kW).
Suits dishwashing, handwashing and low-demand commercial kitchens: village halls, cafes, and small sink washing in bars and clubs.
Santon Aqualine
The same 7, 10 and 15 litre capacities as the Aquaheat, but with a built-in TMV2 thermostatic mixing valve. That lets the unit store water above 60°C and blend it down to a safe handwashing temperature at the outlet.
Two benefits follow. Storing hotter suppresses bacterial growth, which is why these suit schools, nursing homes and nurseries, and it yields more usable hot water from the same tank.


Why choose Santon
Santon sits at the value end of the market without giving much away on build. The units use high-quality materials, carry automatic shut-off against overheating, and are designed to be straightforward to install and operate.
Santon and Heatrae Sadia are both Baxi Heating brands, so the two share engineering and after-sales support, and spare parts are easy to get hold of years down the line. See our Santon spares range.






