Gas Hot Water 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-ok Check Combustion Air & Exhaust-ok Check Temperatures & Water pressure settings; 20psi Performance-ok Check and run Thermostats- operating well at this time.(Recommend customer to upgrade thermostat) Check circulation pump-ok amps and voltage check. (Recommend to customer to upgrade Armstrong pump that needs to be lubricated to Grundfos UPS 26-99)Check water feeder and expansion tank. Check for water leak no leakage at this moment. Run and monitored for good operations. Check radiators, check flow @ boiler all zones are fine supply and return lines getting hot. Perform check for 50gal HWH. Check for wa