4046001 Central heating plant, waste wood and straw (solid biofuel)
4046002 Central heating plant, oil (diesel) fired
4046003 Central heating plant, gas fired
4046004 Central heating plant, warm air
4046005 Central heating plant, steam and hot water
4046006 Central heating plant, superheated water
4046008 Central heating plant, heat pump
4046010 Central heating plant, district
4046013 Central heating plant, industrial, radiant tube, gas fired
4046014 Central heating plant, industrial, gas fired radiant panels
4046015 Central heating plant, industrial, radiant, electric
4046016 Central heating plant, radiant strips, non-electric
4046018 Central heating plant, ceiling
4046019 Underfloor heating systems, warm water
4046020 Underfloor heating systems, electric, domestic
4046021 Water heaters, indirect fired, industrial, gas
4046022 Water heaters for district heating installations
4046023 Water heaters, industrial, steam injection
4046024 Air heaters, solid fuel
4046025 Air heaters, oil fired
4046026 Air heaters, gas fired
4046027 Air heaters, water or steam heated
4046028 Air heaters, waste heat
4046029 Air heaters, electric
4046030 Air heaters, industrial, multi-fuel
4046031 Air heaters, direct fired
4046032 Air heaters, indirect fired
4046035 Hot air generators, oil fired
4046036 Hot air generators, gas fired
4046037 Hot air generators, portable
4046038 Hot air generators, biomass fuelled
4046039 Hot gas generators, fluidised bed
4046040 Heating plant, under-soil, football pitch
4046041 Heating plant, electric, swimming pool
4046045 Substations for district heating plant
4046054 Central heating plant, complete, domestic
4046055 Central heating plant, complete, industrial
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