Winterdown House, Esher Even larger and more impressive than nearby Coval Copse House, Winterdown is a tribute to Heritage's (www.heritagedb.co.uk) design and execution skills. A domed rooflight adds drama to the impressive split-level staircase in the reception hall, while a passenger lift adds practical luxury. With six bedroom suites, a large indoor pool with spa, sanarium and gymnasium, Winterdown House sits beautifully in its mature 2-acre grounds. The cleverly-integrated GreenTec System provides all hot water, heating, cooling and ventilation on all but the most extreme cold days, when a small gas boiler can be called upon to assist the 40kW Ground Source Heat Pump. The GreenTec System installed not only ensures that this superb building requires approximately the same amount of energy as a conventional house one quarter of Winterdown's size, it will also , courtesy of its filtered fresh-air ventilation, give its owners a healthy environment, which is particularly beneficial to asthma and hay fever sufferers.
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The GreenTec System in Winterdown House
Heating: A 40kW Ground Source Heat Pump harvests heat from the ground below the property through six 120-metre deep boreholes. As well as heating the pool and the pool air, the Heat Pump provides hot water for all sinks, baths, towel rails and showers, plus the thermostatically-controlled Under Floor Heating, the most efficient use of Heat Pump technology.
The Heat Recovery Ventilation System extracts stale air from the building's wet areas, replacing it with fresh, filtered air fed into the living areas. In colder weather, the incoming air is warmed by heat recovered from the outgoing stale air, adding another layer of energy efficiency.
Cooling: As the outside temperature rises, the GreenTec System initially turns off the Under Floor Heating and the extract air heat recovery. If the temperature in the house continues to rise, the system begins to tap into the cold fluid returning to the boreholes in order to cool incoming air to maintain a comfortable internal temperature. And, because the coolant for the air-conditioning is essentially a by-product from the Heat Pump, the approximate cost of running the Climate Control is a frugal 1p per hour per room.
Environment: Winterdown House uses 60-80% less energy than a conventionally heated / air-conditioned house would, and, under normal running conditions, there are no local CO2 emissions. Winterdown House's energy-efficient GreenTec System gives a supremely comfortable, healthy environment within a very small carbon footprint.
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