10 CFR § 431.156 - Energy and water conservation standards and effective dates.

(a) Each commercial clothes washer manufactured on or after January 8, 2013, and before January 1, 2018, shall have a modified energy factor no less than and a water factor no greater than:

Equipment class	Modified energy factor (MEF), cu. ft./kWh/cycle	Water factor (WF), gal./cu. ft./cycle
Top-Loading	1.60	8.5
Front-Loading	2.00	5.5

(b) Each commercial clothes washer manufactured on or after January 1, 2018 shall have a modified energy factor no less than and an integrated water factor no greater than:

Equipment class	Modified energy factor (MEF J2), cu. ft./kWh/cycle	Integrated Water factor (IWF), gal./cu. ft./cycle
Top-Loading	1.35	8.8
Front-Loading	2.00	4.1

[76 FR 69123, Nov. 8, 2011, as amended at 79 FR 74541, Dec. 15, 2014; 81 FR 20529, Apr. 8, 2016]