Abstract: A heating system comprising a fuel burner in co-operation with a primary heat exchanger, a reservoir for storing warmed water in, and a blending valve, and a controller wherein in use a user can signal to the controller to warm the water in the water store using a heater or by the primary heat exchanger, and when hot water is required water is removed from the water store and mixed with water from a cold main prior to being or after the water from the cold main has been admitted to a further heat exchanger for heating the water.

Abstract: A heating system comprises a heater and a local heat exchange system in which the local heat exchange system comprises: a primary heat exchanger; a heat store having a secondary heat exchanger; a cold water inlet; and a hot water outlet, in which the local heat exchange system is remotely located from the heater, the primary heat exchanger and the heat store are arranged so as to be heated by the heater, and the primary and secondary heat exchangers are in fluid-flow communication with the cold water inlet and the hot water outlet.

Abstract: A fluid heating system, comprising: a heater having an inlet and an outlet; a storage vessel; a fluid mixer having a first inlet for receiving fluid stored in or passing through the storage vessel, a second inlet for receiving fluid from a cold fluid supply, and an outlet for supplying fluid to the heater inlet; wherein in a first mode the heater is operable to heat fluid in the storage vessel, and in a second mode the fluid mixer is mixes fluid from or passing through the storage vessel with fluid from the cold fluid supply at a predefined volumetric ratio to provide mixed fluid to the inlet of the heater to be heated further to an output temperature.

Abstract: A method of providing heat to a user, comprising an energy retailer offering a supply energy over a contract period at a given amount of energy per use period.

Abstract: A fluid system is provided comprising: a heater having an inlet and an outlet; a storage vessel; storage vessel heating means for heating the fluid in the storage vessel; a mixing valve having a first inlet for receiving fluid to be heated from a fluid supply, a second inlet for receiving fluid from the storage vessel, and an outlet for supplying fluid to the inlet of the heater; and a controller wherein the controller is arranged to monitor the heater's performance and to operate the mixing valve to blend the fluid from the fluid supply with fluid from the storage vessel, for example, when a demand on the heater exceeds a threshold value.

Abstract: A heater, comprising a fuel burner, a primary heat exchanger, and an enclosure around the fuel burner and primary heat exchanger and defining a gas flow path, wherein the enclosure further comprises a secondary heat exchanger and/or heat storage means.

Abstract: A flue offering reduced pluming is provided, the flue comprising a flue pipe for carrying flue gas and a liquid collector adapted to collect condensation from the interior of the flue pipe and to shield it from the flue gas.

Abstract: A heat recovery apparatus comprising a vessel having: a first liquid flow path such that a first liquid can pass through the vessel between a first liquid inlet and a first liquid outlet; a second liquid flow path in thermal contact with the first liquid flow path; and a heater for occasionally heating at least the liquid in the second liquid flow path on an occasional basis. This allows Legionella growth to be inhibited.

Abstract: A heating system in which a warmed fluid is circulated through a delivery network space heaters to provide space heating, further comprising a thermal store and means arranged to circulate the warmed fluid through the thermal store during a heating shut down sequence to recover heat from the warmed fluid.

Abstract: A condensate heat exchanger is provided for recovering heat from condensate draining from a condensate boiler.

Abstract: A flue offering reduced pluming is provided, the flue comprising a flue pipe for carrying flue gas and a liquid collector adapted to collect condensation from the interior of the flue pipe and to shield it from the flue gas.

Abstract: A heating system comprises a heater and a local heat exchange system in which the local heat exchange system comprises: a primary heat exchanger; a heat store having a secondary heat exchanger; a cold water inlet; and a hot water outlet, in which the local heat exchange system is remotely located from the heater, the primary heat exchanger and the heat store are arranged so as to be heated by the heater, and the primary and secondary heat exchangers are in fluid-flow communication with the cold water inlet and the hot water outlet.

Abstract: A heating system comprising a fuel burner in co-operation with a primary heat exchanger, a reservoir for storing warmed water in, and a blending valve, and a controller wherein in use a user can signal to the controller to warm the water in the water store using a heater or by the primary heat exchanger, and when hot water is required water is removed from the water store and mixed with water from a cold main prior to being or after the water from the cold main has been admitted to a further heat exchanger for heating the water.