ASHRAE-90.1-2022- - Page 394

Extracted Content

Informative Table L5-5 Mechanical Performance Factors (MPF), Source Energy Basis

Climate Zone

Building Type

Office (small and medium) [ a]

0A	0B	1A	1B	2A	2B	3A	3B	3C	4A	4B	4C	5A	5B	5C	6A	6B	7
0.72	0.72	0.70	0.71	0.69	0.65	0.71	0.67	0.63	0.71	0.66	0.68	0.75	0.69	0.69	0.77	0.73	0.78
0.83	0.83	0.84	0.84	0.79	0.82	0.72	0.83	0.78	0.68	0.79	0.67	0.72	0.75	0.66	0.73	0.72	0.71
0.60	0.57	0.50	0.55	0.46	0.46	0.43	0.47	0.38	0.41	0.47	0.52	0.42	0.53	0.52	0.45	0.40	0.41
0.62	0.62	0.63	0.63	0.62	0.68	0.61	0.71	0.73	0.56	0.65	0.63	0.51	0.57	0.65	0.47	0.50	0.43
0.64	0.63	0.67	0.63	0.65	0.64	0.59	0.68	0.54	0.58	0.56	0.50	0.57	0.51	0.46	0.56	0.52	0.54
0.82	0.81	0.80	0.79	0.75	0.72	0.71	0.72	0.68	0.68	0.71	0.65	0.74	0.69	0.61	0.78	0.71	0.74

a. Office sizes defined in Section L1.1.1.1.

392 ANSI/ASHRAE/IES Standard 90.1-2022 (I-P)