preamble_30

(19) Regular maintenance of boilers and of air-conditioning systems by qualified personnel contributes to maintaining their correct adjustment in accordance with the product specification and in that way will ensure optimal performance from an environmental, safety and energy point of view. An independent assessment of the total heating installation is appropriate whenever replacement could be considered on the basis of cost-effectiveness.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-30 · Text as adopted (Official Journal); later amendments are not incorporated in this text.