Troubleshooting & FAQ

Most “something looks wrong” questions in HVAKR come down to a missing input rather than a calculation error. This section collects the most common ones, with the exact steps to resolve each.

Browse by symptom

• Missing or Zero Loads — loads not generating, external loads absent, a space showing low loads because design conditions are missing, or infiltration lower than expected.
• Unexpected Load Values — heating higher than cooling, peak cooling occurring late in the day, or outdoor air higher than a hand calculation.
• Systems & Airflow — a negative Load-determined Supply, missing cooling-coil outputs, or an Average Space Setpoint reading N/A.
• Weather & Reports — weather data not matching the project location, or an export stuck generating or showing Failed to generate.

The first thing to check

A large share of load issues trace back to two inputs:

1. Every space has a space type assigned. Space types carry internal loads, ventilation, and indoor design conditions. Without one, a space contributes no load.
2. Envelope types have building data assigned. Wall, window, and roof types need an assembly selected before their loads appear.

Tip

You don’t need an exact assembly match to get results. HVAKR uses the selected wall and roof construction to approximate thermal-mass (conduction time series) effects, and the selected window construction for its angle-dependent SHGC — pick the closest available type and refine later.

Still stuck?

If a value still looks wrong after working through these pages, grant HVAKR Support access to the project so we can review the specific configuration.