I recently completed a job for a client who needed to have their American standard gas furnace maintained. I arrived at the client's home and performed a thorough inspection of the furnace to identify any potential issues. I then replaced the air filter, cleaned the burners, and checked the thermostat settings. Finally, I tested the furnace to ensure it was operating correctly. The client was very pleased with the work and expressed gratitude for my professionalism and attention to detail.