| Interplay Learning - Getting Started with Flushometers |
| Interplay Learning - Grounding and Bonding |
| Interplay Learning - Hand and Power Tool Safety |
| Interplay Learning - Hand Tools for Plumbing Work |
| Interplay Learning - Hangers and Supports |
| Interplay Learning - Hazard Communications |
| Interplay Learning - Hazard Identification and Risk Assessment |
| Interplay Learning - Hazardous Driving Conditions |
| Interplay Learning - Heat Pump Troubleshooting Assessment Simulation |
| Interplay Learning - Heat Pump Troubleshooting (Residential) |
| Interplay Learning - Heat Stress Recognition and Prevention |
| Interplay Learning - Heating and Cooling Load Calculations |
| Interplay Learning - High Efficiency Boiler Troubleshooting |
| Interplay Learning - High Efficiency Boiler Troubleshooting Assessment Simulation |
| Interplay Learning - Hot Work |
| Interplay Learning - How Does Plumbing Work? |
| Interplay Learning - How to Use a Multimeter |
| Interplay Learning - HVAC Cooling Components |
| Interplay Learning - HVAC Ducting and Airflow |
| Interplay Learning - HVAC Heating Components |
| Interplay Learning - HVAC Maintenance |
| Interplay Learning - HVAC Motors |
| Interplay Learning - HVAC Safety Basics |
| Interplay Learning - HVAC Supplies |
| Interplay Learning - HVAC System Parts |
| Interplay Learning - HVAC Systems |
| Interplay Learning - HVAC Technicians |
| Interplay Learning - HVAC Welcome Assessment |
| Interplay Learning - Incident Management |
| Interplay Learning - Industrial Factory Exhaust Fan Maintenance and Repair |
| Interplay Learning - Industrial Lubricants and Lubrication Introduction |
| Interplay Learning - Interior Finish and Trim |
| Interplay Learning - Interior Finishing Floors: VCT Tile and Sheet Vinyl |
| Interplay Learning - Interior Finishing: Drywall |
| Interplay Learning - Intro to Chillers |
| Interplay Learning - Intro to Commercial and Light Commercial Equipment |
| Interplay Learning - Intro to Electrical Code |
| Interplay Learning - Intro to Fire Safety and Portable Fire Extinguishers |
| Interplay Learning - Intro to Heat Pumps |
| Interplay Learning - Intro to HVAC Mechanical Code Regulations |
| Interplay Learning - Intro to Washers and Dryers |
| Interplay Learning - Introduction to Arc Welding |
| Interplay Learning - Introduction to Cold Climate Heat Pumps |
| Interplay Learning - Introduction to Combustion |
| Interplay Learning - Introduction to Commercial Air Handling Units |
| Interplay Learning - Introduction to Commercial Lighting & Devices |
| Interplay Learning - Introduction to Commercial Plumbing Systems |
| Interplay Learning - Introduction to Commercial Refrigeration Systems |
| Interplay Learning - Introduction to Commercial Transformers |
| Interplay Learning - Introduction to DWV Systems |
