ASHRAE 90.1 Appendix G 2019 Inputs

Building

ASHRAE 169 Climate Zone

Select your location's climate classification (determines baseline HVAC systems and envelope requirements)

Service Water Heating Building Type

Select building occupancy type (determines hot water demand assumptions for baseline)

Baseline Orientations

Select Single (0°): Baseline matches proposed orientation

Select Multiple (0°, 90°, 180°, 270°): Four rotations averaged (prevents orientation bias)

Unmet Hours

Unmet Hours

Select Occupied: Count unmet hours only during occupied times (standard for ASHRAE 90.1)

Select Total: Count all 8760 hours/year including unoccupied periods

Scope

Select Single (0°): One baseline model at proposed orientation

Select Multiple: Four baseline models averaged at 0°, 90°, 180°, 270°

Cooling Setpoint Tolerance

Select temperature above cooling setpoint before counting as unmet (°C). Standard: 1.11°C (2°F)

Heating Setpoint Tolerance

Select temperature below heating setpoint before counting as unmet (°C) Standard: 1.11°C (2°F)

Performance Cost Index

Select Building Performance Factor

Multiplier adjusting baseline energy consumption

Select Electricity/Gas Tariff Units

Select billing units (kWh most common)

Select Monthly Charge

Fixed monthly service fee ($/month)

Select Unit Charge

Variable cost per unit consumed ($/kWh)

Select Unregulated End Use

Equipment not covered by energy code (servers, medical equipment, etc.)