Came out today for a heating issue for a RUUD furnace. Model #ugph-10EAMER, serial #fd5d302f190211506. Upon arrival the homeowner stated that the could smell something burning through the vents. The thermostat was turned off when I arrived. I called for heat and observed the system starting normally. I let the system run and took an amp draw of the blower motor and got a reading of 6.1. This is a high amp draw for this system. I took a combustion analysis test and received the following readings, o2 is at 7.1% and the co level are at 47ppm. The system is 21 years old . I presented the homeowner with several solutions. The homeowner went with the platinum option. Chud will have to schedule a return visit for repair once parts are received.