Reduce Your Energy Bills – Produce Hot Water Using A Solar Heat Assisted Pump


Chosen by Channel 4 series Grand Designs Kevin McCloud as one of his “Green Hero’s” the magic Thermodynamic Box:

• Generates hot water in all weathers

• Works day and night 365 days a year.

• Heats water to 55°C

• Panel can be mounted on external walls or roof

• Can be retrospectively fitted to existing cylinder

• Compatible with both vented and unvented systems

• Panels can be mounted on external walls or roof

• Tested, proven technology

• Minimum maintenance required

• Significantly reduces carbon emissions


The Magic Thermodynamic Box is a ‘Solar Assisted Heat Pump’ that supplies hot water to a water cylinder night and day, 365 days a year, no matter what the weather.



“A “retro-fit” system comprises a Little Magic Box and an external Thermodynamic panel that can be connected to an existing pressurised or vented cylinder.”



How It Works

The System works like ‘a fridge in reverse’. Refrigerant liquid circulates within the thermodynamic panel that is fixed to an external wall. The panel acts as an evaporator, absorbing energy from the ambient air and environmental energies. This is passed to the refrigerant (R134a) which changes state to a gas. This gas is compressed creating very hot gas in the Little Magic Box and this heats the water that is drawn from the hot water flow from the existing water cylinder. The water is returned to the cylinder via a ‘T’ into the cold supply pipe to create a full cylinder of hot water up to a temperature of 55oC. This works day and night providing hot water at very low running costs.

All major components are European sourced and the Little Magic Box is manufactured in Essex. The composite water pump and plate heat exchanger are both WRAS approved.


The Thermodynamic Panel is made of aluminium and is normally fitted to an external wall. Any aspect is suitable. It can be in portrait or landscape orientation.

The Little Magic Box is “microwaved sized” and is positioned as close as possible to the existing water cylinder. It is connected by teeing into the hot and cold water flows. The magic Box is pre-gassed with R134a ozone friendly refrigerant for an 8 meter distance between the panel and the Box, this can be extended to 15 meters.

Thermodynamic box

Thermodynamic Panel