Performed annual tune-up on a Goodman propane furnace. Cleaned the burners, heat exchanger, igniter, flame sensor, neutralizer, condensate trap, and pump. Checked all safety controls, venting, fans, and overall furnace operation. Bubble-tested the gas line and checked carbon monoxide levels — no leaks detected. The burners on the furnace are rusty and I recommend that they be replaced. With customer approval we ordered the parts and will call to schedule. Performed annual tune up on a Viessmann propane boiler. Cleaned the burner, heat exchanger, igniter, flame sensor, and condensate trap. Inspected combustion, safety controls, relief valve, expansion tank, venting, and overall hydronic system operation. Performed a bubble test on the gas line and checked CO levels—no leaks detected. Verified operation and systems are working properly at this time.