but can last longer if it's well maintained. Factors that can affect the lifespan of an expansion tank include:
- Usage: How often the tank is used
- Water pressure: Whether the tank's pressure matches the incoming water pressure
- Quality: The quality of the tank itself
- Temperature: The temperature of the fluid in the tank
To maximize the life of an expansion tank, you can:
- Match the pressures: Ensure the tank's pressure matches the incoming water pressure
- Inspect regularly: Check the tank for damage or wear, such as leaks or rust, at least once a year
- Use a heat trap: A heat trap can prevent hot water from circulating and overheating the fluid in the tank
Signs that your expansion tank may need to be replaced include:
- Dripping water from the tank
- Water bleeding out of the air valve
- Little black flecks in your toilet water
- A "thud" sound when you tap on the tank
