I performed routine heating maintenance on a residential property. I checked the furnace, thermostat, and air filters to ensure they were working properly. I also cleaned the burners and inspected the venting system. I replaced the air filter and checked the thermostat settings. I tested the furnace to ensure it was heating the home evenly. I also checked the carbon monoxide detector and tested the smoke alarms. I made sure all the electrical connections were secure. I cleaned the exterior of the furnace and venting system. I also checked the thermostat settings and made any necessary adjustments. I provided the homeowner with a detailed report of my findings and recommendations for future maintenance.