Mechanism
Explain the physical process in ordinary language without pretending one mechanism proves the condition at a particular site.
Open commercial building science
Follow the heat, air and moisture—then measure what changed.
ICY turns established building physics into plain field questions. The library separates published science from GCT's practical measurement sequence, identifies uncertainty and leaves site-specific conclusions to actual evidence and qualified authority.
Educational material is not a remote diagnosis, load calculation, engineering design, code determination or authorization for regulated work.
Measurement
Name the reading, location, operating state, time and comparison needed to test the working explanation.
Limits
State what the readings cannot establish alone, including cause, responsibility, code compliance and equipment-specific diagnosis.
Sources
Connect the claim to primary technical material and record when the source link was reviewed.
Eight connected guides
Start anywhere. Keep the whole building in view.
The articles use SI units first and add U.S. customary equivalents where they improve field use. Terms link back to one shared glossary.
Why a Building Stays Hot: A Heat-Balance Primer
Follow heat entering, accumulating in and leaving a building before treating a hot-space complaint as an equipment-size decision.
Read the guide →Dew Point, Surface Temperature and Condensation
Understand why relative humidity alone cannot predict condensation and how moisture, air pathways and cold surfaces interact.
Read the guide →Sensible and Latent Cooling: Temperature Is Only Part of the Load
Separate temperature reduction from moisture removal when evaluating comfort, coil performance, runtime and ventilation load.
Read the guide →Airflow and Building Pressure: Follow the Complete Path
Trace supply, return, outdoor air, exhaust and leakage as one mass-balance system instead of treating a door or grille symptom in isolation.
Read the guide →Temporary Cooling Works Only When Heat Leaves the Boundary
Evaluate the cold side, hot side, replacement air, condensate and electrical input before calling portable cooling a net building solution.
Read the guide →Cooling Capacity and Efficiency Are Different Questions
Read equipment ratings in context and separate heat-removal rate, electrical input, part-load behavior and installed delivery.
Read the guide →Measurement Uncertainty: Report What the Reading Can Support
Define the measurand, preserve operating context and report instrument, sampling and calculation limits instead of false precision.
Read the guide →Commissioning and Verification: Prove the Intended Operation
Turn requirements into functional tests, acceptance evidence, corrections and repeatable records across the operating modes that matter.
Read the guide →Use, verify and reuse the map
The library includes human-readable and machine-readable paths.
Read the terms, inspect the official sources, download a blank field record, review the editorial method or use the JSON library map and plain-text discovery file.