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π§ Designed to restore correct internal water flow and maintain efficient boiler operation
VAILLANT VUI 376/5-5 (2012-CURR)
high efficiency
Dispatched with Royal Mail 2nd Class
BAXI COMBI INSTANT 80 HE (SECONDARY HEAT EXCHANGER)
VAILLANT ECOTEC PLUS 637 / 837 / 937 MAIN HEAT EXCHANGER KIT 0020135134, REFURBISHED CARTRIDGES/REPAIRKITS π§ Designed to restore correctVaillant 0020135134 Heat Exchanger 7 Coil ecoTEC Plus. Product Information: There are two different kinds of heat exchanger that can be present, they are the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and it allows the heat to be transferred from the burner to the water within the system. The secondary heat exchanger only appears on combination boilers and allows the heat to be transferred
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