Performed furnace maintenance on 2013 Lennox heater. Upon arrival homeowner stated that system has had no issues and has been working properly. During the maintenance I did find out the single secondary motor control Will be coming week on the indoor blower motor. Also the single second remote control on the inducer motor was leaking a ton of oil. Temperature rise checked out properly. Flame sensor was cleaned and hot surface igniter is in proper range. Client will swap out Merv 16 filter during the summer. System was not equipped with surge protection. Burning flames appeared healthy and upon departure system is fully operational and heating