Complete 2 Systems worked on US Goodman Dual Fuel System, and DS Gas Pak System: EPA Heating Maintenances for both Systems. DS Goodman Gas Pak, EPA Heating Maintenance: cycled system. Checked tstat and air filter. Checked electrical connections. Checked blower motor amp draws. Checked run cap. Inspected evap coil. No CO detected. Cleaned Burners.Cleaned Flame sensor. Checked amparage on draft motor. All safety switches are on great condition. Checked draft motor. System is running great at this time. US Goodman Dual Fuel System: Gas Side: EPA Checked tstat and air filter. Checked electrical connections. Checked blower motor amp draws. Checked run cap. Inspected evap coil. No CO detected. Burners are clean. Cleaned Flame sensor. Checked amparage on draft motor. All safety switches are on great condition. Checked draft motor. On HP Side check. Checked compressor and cfm amp draws. Checked dual cap. Checked all wiring at the condenser. Checked pressures. Tested defrost board. Cle