Arrived to do a performance maintenance. Set up for combustion analysis temperature split and static pressure tests. While performing the combustion analysis found that the furnace is receiving double the gas pressure than the system is rated to handle. Tuned the furnace to keep it closer to manufacturers specifications. The pressure to the home needs rectified or a pressure regulator will need to be installed to protect the furnace. Either way, the furnace will need tuned again to allow proper operation. Verified operation of all mechanical and electronic components of the furnace. Checked blower for cleanliness and to see if there is any play in the bearings. Checked systems heat exchanger to ensure proper venting of flue gas. Replaced furnace filter media and left behind the 3 remaining filter media changeouts. Furnace is operational at this time.