I am a skilled professional that works for a Dor-Mar Heating & Air Conditioning company. I recently completed a furnace maintenance job for a customer. The maintenance checklist included tasks such as cleaning the furnace, checking the thermostat, and inspecting the air filters. I also replaced the air filter and checked the burners for proper operation. After completing the maintenance, I provided the customer with a detailed report of the work that was performed. The customer was very satisfied with the service and expressed that they would recommend our company to others.