July 22, 2026
A new article on chiller-fan coil systems, their features and operating principles has been added.
The main HVAC sections are now available in English; individual source materials are translated in stages.
Open the Articles section →Practical materials on HVAC system design and engineering.
Reference books, catalogs, drawings and useful engineering software.
A curated collection of HVAC engineering videos.
Online calculations for HVAC and hydronic system parameters.
Knowledge checks covering essential HVAC topics.
HVAC terminology, abbreviations and technical definitions.