Levens & Greystoke, Winchmore Hill Two superb new detached residences in the same premier North London residential location; both in about an acre of grounds, these properties are newly onto the market in the early part of 2009. Rectory (www.rectory.co.uk) have made a substantial investment into incorporating energy-efficient green technology into their new houses, closely collaborating with GreenTec Systems to design and install the truly innovative heating, cooling and ventilation systems in these two outstanding properties. Each GreenTec System is powered by a Ground Source Heat Pump, which, except in the most extreme cold conditions (when a gas boiler assists), provides all hot water, heating, cooling and ventilation for each house and their indoor swimming pools at remarkably low levels of pollution and running cost. Annually, each house will produce approximately one quarter of the CO2 expected from a gas/electric powered house, with running cost savings of around two-thirds.
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Identical GreenTec Systems in Levens and Greystoke
Heating: A 30kW Viessmann Ground Source Heat Pump harvests heat from the ground below the property through six 100-metre deep boreholes. As well as heating the pool and the pool air, hot water is provided for all sinks, baths, towel rails and showers via a 1,000 litre storage tank, which is held at a constant 55°C. All three floors are heated by thermostatically-controlled Under Floor Heating, the most efficient use of Heat Pump technology. The 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: Each of these impressive properties uses 60-80% less energy than a conventionally heated / air-conditioned house would, and, under all but the most extreme cold conditions, there are no local CO2 emissions.
The two energy-efficient GreenTec Systems give a supremely comfortable, healthy environment within a very small carbon footprint.