Skip to main content
WebsitebeginnerFree

HVAC Exam Math: Airflow, Temperature Rise, and Capacity Conversions

ExamsLib

Seven worked HVAC calculation problems covering airflow from sensible heat, air temperature rise, hydronic heat with the 500 × GPM × ΔT formula, and tons, kW and Btu/h conversions. Each solution shows a unit check and the common wrong answers, preparing learners for licensing-exam arithmetic.

Visit resource

More resources on HVAC Basics

WebsiteFree

Energy Vanguard

Building-science blog by Allison Bailes covering duct design, Manual J load calculations, air sealing and dehumidification. Readers come away understanding why HVAC systems underperform in real houses and how enclosure choices drive equipment sizing.

WebsiteFree

InspectAPedia HVAC

Free reference encyclopedia of air conditioning and heat pump diagnosis, with photographs, wiring details and step-by-step fault trees. Useful for identifying refrigerant, airflow and control problems on residential equipment before calling a technician.

CourseFree

Introduction to HVAC

Learn HVAC basics! This free course introduces heating, ventilation, and air conditioning systems.

CourseFree

HVAC School Podcasts and Free Training

Learn air conditioning repair with HVAC School! Free training and podcasts from Bryan Orr to boost your HVAC career.

BookPaid

Modern Refrigeration and Air Conditioning

Goodheart-Willcox trade textbook covering refrigeration cycles, refrigerant handling, compressors, controls and system service procedures. Working through it gives apprentices the theory and equipment knowledge needed for installation, diagnosis and EPA certification on residential and commercial systems.

BookPaid

HVAC Troubleshooting Guide

McGraw-Hill field manual organized around symptoms in heating, cooling and ventilation equipment, with wiring diagrams and test sequences. Readers finish able to isolate electrical, airflow and refrigerant faults using meters and pressure readings rather than guesswork.

See all HVAC Basics resources →