Surecal immersion heater designed for use with Supa Surecal water heater calorifiers. The heater features two thermostats: one heavy duty stat at 20 amps and one independent safety thermostat to prevent the engine tripping the stat unnecessarily.

The immersion heater is made from incoloy for a long service life, no matter how hard the water conditions are. The thermostat pocket is made from stainless steel to avoid corrosion. The immersion also comes with an O-ring seal for easy installation.