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homes table 1 part 2

HVAC requirement

ASHRAE 90.1–2007

ASHRAE 90.1–2010

Garage fans


Auto-adjust fan speed with contaminant levels to 50% or less of capacity

Chiller efficiencies


Increased for all chiller types

Single-zone VAV


Required to have VFD or two-speed motors for DX >9.2 tons (32.3 kW), and chilled water AHUs >5 hp (3.7 kW) fan motors

Water and evaporatively cooled unitary AC units and heat pump efficiency

Table 6.8.1A and B


3–5% more stringent

PTAC and PTHP efficiency increased; Table 6.8.1D

12 EER

13.8 EER

Water to water heat pump, CRAC, and VRF

Table 6.8.1B; Table 6.8.1K; Table 6.8.1J respectively

Not covered

Now covered by 90.1