Hot Surface Igniters
Best Furnace Igniters 2026
Hot surface igniters are the most common furnace repair. We ranked the top replacements by compatibility, durability, and value to help you get it right the first time.
Buyer's Guides
Research-backed guides to help you pick the right HVAC replacement part and avoid the wrong one.
Flame Sensing Rods & Thermocouples
Best Flame Sensors for HVAC
A failed flame sensor is one of the cheapest furnace repairs you can do — if you buy the right part. We cover both universal rods and brand-specific sensors.
Dual-Run & Start Capacitors
Best HVAC Run Capacitors
Capacitor failure is the most common summer AC repair. A $15 part — if you know the MFD rating your unit requires. Here's how to pick the right one.
Condenser & Inducer Motors
Best HVAC Fan & Inducer Motors
Motor replacements for condenser units and furnace inducers. We compare universal vs. OEM-specific options and explain when each approach makes sense.