HVAC Technical Resources Library

HVACProSales.com is the professional HVAC technician's reference library. This page indexes all 318+ technical guides, glossary terms, how-to instructions, regulations, and buying guides available on this site — organized by topic for fast access.

HVAC Glossary — 100 Technical Terms

Complete definitions for every major HVAC term, written for professionals.

AFUE SEER HSPF EER MERV CFM BTU Ton of Refrigeration Static Pressure Manual J Manual D Manual S Psychrometrics Subcooling Superheat TXV ECM Motor VRF Zoning IAQ Economizer Enthalpy Latent Heat Sensible Heat COP EWT LWT Chilled Water System Condenser Water System AHU RTU MAU VAV FCU Ductless Mini-Split Heat Exchanger Refrigerant Compressor Condenser Coil Evaporator Coil Expansion Valve Blower Motor Thermostat Contactor Capacitor Filter Drier Schrader Valve Brazing Soldering Pump Down ACH Dew Point Wet-Bulb Temperature Dry-Bulb Temperature Relative Humidity Absolute Humidity Enthalpy of Vaporization Specific Heat Thermal Conductivity U-Value R-Value Infiltration Exfiltration Ventilation Building Envelope Fenestration Glazing Low-E Coating SHGC Visible Transmittance BAS DDC PLC SCADA BACnet LonWorks Modbus PID Controller Setpoint Deadband Hysteresis Commissioning Retro-Commissioning Test and Balance (TAB) Air Balancing Hydronic Balancing Duct Leakage Blower Door Test Anemometer Manometer Pitot Tube Velometer Hygrometer Thermocouple Thermistor RTD Pressure Transducer Flow Meter Damper Actuator

How-To Guides — 27 Step-by-Step Procedures

How to Braze Copper Lines How to Pump Down an AC How to Wire a Contactor How to Test a Capacitor How to Clean a Flame Sensor How to Check Refrigerant Charge How to Evacuate a System How to Replace a Capacitor How to Replace a Contactor How to Replace a Blower Motor How to Charge a Mini-Split How to Install a Thermostat How to Troubleshoot a Heat Pump How to Size a Furnace How to Read P-T Charts How to Use Manifold Gauges How to Nitrogen Pressure Test How to Commission a Chiller Cooling Tower Water Treatment Balance a Hydronic System Program a VAV Box Controller Troubleshoot a BAS Change Out a Commercial RTU Commercial HVAC Energy Audit Size and Select a Commercial Boiler Install and Commission a VRF System Maintain Commercial Refrigeration

Refrigerant Guides

Refrigerant Types Guide Refrigerant Phase-Out Timeline R-454B Safe Handling R-32 Safety and Handling Refrigerant Recovery Best Practices Refrigerant Leak Detection HFO Refrigerants Explained A2L Refrigerants Safety Guide Refrigerant Blends and Glide GWP and ODP Explained Refrigerant Fractionation

Regulations & Compliance

EPA 608 Certification Building Codes & Permits ASHRAE Standards Overview OSHA Safety Regulations NATE Certification UL Standards DOE Energy Efficiency Standards International Mechanical Code ASHRAE 90.1 Deep Dive ASHRAE 62.1 Deep Dive ASHRAE 15 & 34 Standards IMC Deep Dive IECC Deep Dive

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