Air source heat pumps from Worcester Bosch provide a sustainable and cost effective alternative for domestic heating and hot water solutions. By converting the free and sustainable latent energy that's in the air all around us into heat, the Greensource system delivers green, low- cost, energy- saving heating and hot water all year round and works very effectively in outside temperatures as low as - 20 º C. This advanced technology is well proven in Scandinavia and other parts of Europe. So it is very suited to the UK's comparatively mild winters and is a highly efficient heating and hot water solution whatever the season. The new Worcester Greensource range offers a choice of two systems: air to air or air to water, both producing significant savings compared with a conventional heating system. Air to air heat pumps are an excellent choice where external space is limited as they require nothing more than a suitable outside wall. This makes them ideal for a wide range of property types, particularly those with open plan designs. Greensource air to water is ideal for low- temperature central heating such as underfloor but works equally with oversized radiators with flow rates up to 65 º C. How do air source heat pumps work? The technology inside an air source heat pump works on similar principles to the way a domestic fridge works. Heat pumps take advantage of the principles of thermal energy in order to achieve their results. Both types of air source heat pump operate in a similar way. The external fan unit draws in the outside air and converts the latent heat it contains on even the coldest of days into warm/ cold air or hot water, depending on the type of heat pump. How efficient are air source heat pumps? When properly installed, an air source heat pump can produce up to 4 times more heat energy ENERGY Air source heating SOLUTIONS 9 Heat is distributed evenly throughout the property How Greensource air to water heat pumps distribute heat

Air to Air Heat Pumps The Greensource air to air heat pump converts the energy from the outside air into heat using the same technique as air to water heat pumps, and then circulates warm air internally to provide a comfortable temperature inside the home. Where space is limited, Greensource air to air heat pumps are an attractive alternative for providing energy efficient heating as the only space requirement is an external wall, making them ideal for apartments and smaller homes. As an extra benefit, Greensource air to air heat pumps can also operate as an air cooler and purifier using Plasmacluster Ion- technology. Features: • Energy efficient – COP* of up to 4 • Compact design requiring only an outside wall • Suitable for a wide variety of property types, including apartments and conservatories • Quiet operation • Easy to install and maintain • Display with indoor/ outdoor temperature • High efficiency in all temperature ranges Air to Water Heat Pumps These pumps work by converting the energy from the outside air into heat and transferringthe heat to water so it can then be used with an existing style central heating system, Greensource air to water heat pumps are ideal for providing low cost heating throughout the year. This gives the advantage of connecting the heat pump to a new or existing wet system to provide the hot water for heating. As Greensource air to water heat pumps provide an outgoing flow temperature of 65 º C, they are ideally suited for underfloor heating or oversized radiators. Features: • Energy efficient – COP* of up to 4 • Maximum 65 º C outgoing temperature • Works down to outdoor temperatures of - 20 º C • Suitable for use with underfloor heating and oversized radiators • Indoor integrated cylinder • Easy to install and maintain • Designed for connection to all types of wet heating systems • Auto defrost function • Proven technology that saves you money • No ground- works required Air source heating Air to Water Heat Pump • Can be used to provide cool air in the summer • Active Ion- technology air purification, ideal for allergy sufferers • Auto defrost function • Proven technology that saves you money 10 RENEWABLE Air to Air Heat Pump