Performed annual tune-up on a Peerless propane boiler. Cleaned the burners, heat exchanger, igniter, flame sensor, and pilot assembly. Inspected safety controls, relief valve, expansion tank, venting, and overall hydronic system function. Bubble-tested the pilot line and checked carbon monoxide levels—no leaks detected. Flushed sediment from an indirect water heater. 3 of the burner were showing signs of wear, I recommend replacing them and they would like us to do it after the holidays, we’ll call to schedule. Verified proper operation; the system is functioning correctly at this time.