The licensed and insured technicians at Mr. Furnace's draw upon top-tier training to navigate the ducts and vents of every furnace brand. Technicians kick off the one-hour treatment by checking the interior of the combustion chamber, flame sensor, and ignition system. Next, furnace finessers ensure the supply and return registers, filtration, humidification, thermostat, and gas piping are running as smoothly as a zamboni on a treadmill, after which all gas-fired equipment undergoes a thorough carbon monoxide testing. To finalize the inspection, technicians make recommendations to improve overall performance and ensure that furnaces won't be shirking their duties or transforming into a crime-fighting robot by night. Inspections are available 7 days a week and offer a money-back guarantee of on-time arrival.