METROAIR AQUA

METRO THERM's domestic hot water heat pump system consists of an efficient heat pump connected to a well-insulated domestic hot water tank. A fan draws ambient air in past the heat pump’s refrigerant into the heat pump’s evaporator. The air releases some of its energy into the refrigerant, which evaporates even at low temperatures. The refrigerant is run through a compressor, which raises its pressure and hence temperature. The hot refrigerant then circulates in a coil around the tank, where it releases its heat to the domestic water supply and condenses back into liquid form. A valve then reduces the pressure, and the refrigerant returns to the evaporator, where the process begins again.

The domestic hot water heat pump’s tank has a special enamel coating on the inside that protects against rust, limescale and bacteria. The tank is fitted with a measurable and replaceable magnesium anode and is VA-approved. It is insulated with high-performance, pentane-driven polyurethane foam to guarantee low heat loss for many years to come. The cabinet is powder-coated, with a durable, easy-clean, silky matt varnish. The coils are inserted before the tank is enamelled to ensure there are no untreated joints.