| Abbreviation | Definition |
|---|---|
| HU | High Utility |
| HVAC/R | Heating, Ventilation, Air Conditioning, and Refrigeration |
| HVC | High-Velocity Coating |
| HVH | Heatwave Vivarium Heater |
| HVIT | High Velocity Impact Technology |
| HVLP | High Volume, Low Pressure |
| HVP | High Volume Production |
| HVP | High-Vacuum Pump |
| HW | Height - Width measurements |
| HW | Horizontal Wrap |
| HWC | Handle With Care |
| HWHP | Hot Water Heat Pump |
| HWPI | Heartland Wood Products Inc |
| HYSP | China Hua Yang Steel Pipe co |
| I | Inlay |
| IA | Isothermal Annealer |
| IA-32 | Intel 32-bit Architecture |
| IA-64 | Intel 64-bit Architecture |
| IAHP | International Animal Health Products |
| IAO | In And Out |