Breadcrumb Home/ Interplay Learning - Gas Furnace Troubleshooting/ Interplay Learning - Gas Furnace Troubleshooting Interplay Learning - Gas Furnace Troubleshooting Duration 5 hours 0 minutes Language English Learn to troubleshoot a typical residential gas furnace (80% mid efficiency) surrounding over 20 life like service calls surrounding burners, safety switches and motor operations. Back to Course Title Interplay Learning - Gas Furnace Troubleshooting