This isn’t a boiler heat exchanger (those can be £300–£800+), but a copper coil for converting a direct cylinder to indirect heat via primary hot-water. Sidewinder Conversion Copper Coil Heat Exchanger IMI Yorkshire Imperial Pipe Fittings Brand new unused from storage since 1980 In original box with instructions and all fittings Sent out by tracked delivery service from within the UK inside 24 hours
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