Our Heat Pumps
We use a waterkotte heat pump from one of the leading countries in heat pump technology Germany.
Our ground source heat pumps can be installed in two different ways:
The horizontal collector
Loops of HDPE absorber pipe, 100m long, are laid horizontally in the soil. The pipes are laid at around 1.2 to 1.5 m depth, (0.3m below the regional freezing depth) where the soil temperature remains relatively constant throughout the year. For the smallest layout grid of 0.25m pipe spacings, each 100m loop of absorber pipe can collect around 1kW of heat from the ground, i.e. one 100m loop is required for every 1.333kW heating capacity.
Geothermal probes
Hair-pin shaped loops of high quality HDPE plastic tubing are encased in a vertical borehole, around 12cm in diameter. The tubing is hard wearing and a good conductor. The specific removal capacity (W/m) is only slightly influenced by the diameter of the hole, arrangement of pipes and pipe fittings. Far more important is the length of the hole, as capacity increases in proportion to the length. Boreholes are drilled to a maximum depth of 130m. The boreholes must be laid far enough apart so as not to affect each other.
Advantages of heat pumps:
Economy
Geothermal energy offers freedom from the rising costs of oil and gas. The high efficiency of Waterkotte geothermal heat pumps as part of a Nutherm heating system means that, in comparison with conventional heating systems, reductions in running costs of up to 70% are achievable. As a result, the initial cost of the system is recouped in 3-5 years on average. The lifetime of the heat pump is up to 3 times longer than a traditional boiler, and the collector will last as long as the building itself. Investing in a geothermal heating system will increase value of your property.
Environmental issues
The burning of fossil fuels for energy contributes both to depletion of our natural resources and to climate change by the release of greenhouse gases into the atmosphere. With a geothermal heating system, over three quarters of the energy for heating your house comes from a renewable, non-polluting source, significantly reducing your contribution to these problems, economically and without compromising on comfort.
Savings
The savings of a heat pump compared to oil are large, between 60 – 70%
Payback
The payback of a heat pump is between 4 – 8 years.
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