The market is broken down into:
1/ A basic service called "multiservices".
2/ A possible additional PSE 1 service concerning heating installations / DHW
individual and corresponding ventilation systems, CIC and calosat modules.
3/ A possible additional PSE 2 service concerning controlled mechanical ventilation
single and double flow.
3/ A possible additional service PSE 3 concerning the inventory of fixtures of exit.
cf article II.1.4)