Boiler Pilot won't light / Replacing the thermocouple if the pilot won't stay lit - YouTube
5 Reasons Why Your Pilot Light Keeps Going Out | Furnace Maintenance DIY Tips | Heating HVAC Services Waukesha | Forced Air Heat System Repair | Hot Point Heating & Air Conditioning LLC Oconomowoc, Wisconsin
Resideo CQ100A1005 Replacement Thermocouple for Gas Furnaces, Boilers and Water Heaters, 36-Inch - Pipe Fittings - Amazon.com
Furnace - Thermocouple | Repair and Replace - YouTube