01 Jan, 1970
Step-by-step guide to diagnose why your furnace won't kick on. Learn DIY fixes, when to call a pro, repair cost estimates, and critical safety tips for HVAC emergencies.
Learn how thermocouples work using the Seebeck effect, compare common types (K/J/T), and master troubleshooting for furnaces and water heaters. Essential guide for HVAC techs and homeowners with installation tips.