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 0 BTU, 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 — negative supply CFM, the “cooling coils disabled” warning, or an average setpoint reading -459.7°F.
• Weather & Reports — weather data not matching the project location, or a PDF/CSV report stuck generating.

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 construction to approximate thermal-mass and radiant time-series effects — pick the closest available type and refine later.

Still stuck?

If a value still looks wrong after working through these pages, share the project with HVAKR support from the Help menu so we can review the specific configuration.