Commercial Ground Source Heat Pump Installation in Marden, Kent

We were approached by the customer to come up with a solution to heat three separate dwellings on their farm in the Marden, Kent area. 

They wanted to make the best use of a solar farm that they already had installed on the site. The company that installed the solar farm did so on the basis that they would supply and install the equipment and receive the Renewable Heating Incentives (RHI), and that the customer could buy the electricity whilst being generated for 6 pence per unit. 

Planning & Installation

The properties on the farm comprise of the 'Farmhouse' where the customer lives, the 'Oast House' rented for residential use, and the 'Barn' which is rented out as office space. We carried out various upgrades to the current heating systems in all of the properties and made recommendations for simple insulation upgrades. 

We arranged for a timber-framed plant room to be built to our specification to house the heating and hot water equipment. We then installed a 45kW Thermia Mega M three-phase Ground Source Heat Pump along with all the necessary equipment to serve all three properties.

Each property is individually metered for heating & hot water usage and pre-insulated pipework.

Results from Heat Pump Installation

The heat pump is returning on average 3.5 units of heat for every 1 unit of electricity used through the summer months providing 100% of the hot water. The heat pump is providing over 4 units of heat for every unit of electricity used in the winter months for both heating and hot water.

As an indication, an immersion heater returns one unit of heat output for every one unit of electricity.