Water Heaters · Tankless Components
Heat Exchanger (Tankless)
The core component in tankless water heaters that transfers heat from the burner or electric elements to the water flowing through the unit. Made of copper or stainless steel with internal fins or coils. Most expensive replacement part. Efficiency depends on proper scaling prevention and maintenance.
Common uses
Heat transfer, water heating, system efficiency
Common symptoms
- Insufficient heating
- Scale buildup
- Reduced flow
- Overheating
Common repairs
- Descaling
- Heat exchanger replacement
- Maintenance cleaning
Related terms
Pro launch updates
Get notified when Pro launches, plus a monthly code-change digest. Email only — no account required.