Brief definition
Cost group 420 (KG 420) under DIN 276 comprises heat supply installations — generation, distribution, and transfer of heat in the building (e.g. heating, heat distribution).
Relevance for quantity take-off and BoQ
Quantities include pipe lengths, counts of radiators/sub-distributors, and areas in plant rooms. Design documents must clearly show pipe routes and component schedules.
AIGO relevance
AIGO supports geometry-based quantity take-off from 2D PDFs for technical installations and coordinates exports with the DIN 276 structure — deterministically, without AI estimation of core dimensions.