Performed furnace maintenance on 6 year old Amanda furnace. Cycled system for heat. Verified proper heating sequence of operations. Temperature rise across heat exchanger is within range. Cleaned blower compartment as well as heating compartment and components. Indoor blower wheel is clean. Secondary motor control is out of range for indoor blower motor. Also system does not have any condensation safety switches. Filter was just replaced. Cycled system, system is operational upon departure. Emailing recommendations to owner.