1 furnace tune up complete. Found furnace not operating due to weak flame safety. Found weak blower motor controller and worn ignition system as well. Recommend repairs. Left customer with replacement filter. Recommend more insulation for increased efficiency and comfort. Recommend upgrading thermostat to a newer, more reliable thermostat. Replaced flame safety, ignition system, blower motor controller and recalibrated furnace for improved efficiency. System is heating at this time. Customer upgraded tune up to maintenance plan. Customer used $25 off coupon.