[F117. Standards and performance of heating, mechanical ventilation and air conditioning.]N.I.
F1Sch. 1 paras. 17, 17A, 17B, 17C, 17D, 17E substituted (31.8.2009) for Sch. 1 para. 17 by Building Regulations (Amendment) Act (Northern Ireland) 2009 (c. 4), ss. 1(2)(c), 15(4); S.R. 2009/272, art. 2(a)