1 Gas Hot Water Boiler: Burnham Boiler- Perform a tune-up and cleaning to help ensure reliable and safe operation. Inspect for cracks & deterioration of Heat Exchanger Check and clean Burners tubes and heat exchanger- ok, vacuumed-ok Check and clean flame sensor/flame rod and ignition Assembly-ok Spark igniter. Check Safety Controls-ok Check electrical wiring and components-ok Check Gas valve & Gas Line-Mechanical noise @ gas valve: recommended customer to replace. Check Combustion Air & Exhaust-ok Check Temperatures & Water pressure settings; 18psi Performance-ok Check and run Thermostats- operating well at this time. Check circulation pump-ok amps and voltage check. Check water feeder and expansion tank. Check for water leak no leakage at this moment. Run and monitored for good operations. Supply and return lines getting hot. Perform check for HWH. Check for water leak, no leakage at this time. Check control gas valve-ok Check air Combustion and Draft-ok Run and monitored for good op