The answer to 'toilet replacement frequency' is that most toilets should be replaced every 10-15 years on average. Toilets are durable and can last for decades with proper maintenance, but factors like water quality, usage, and wear and tear can affect their lifespan. It's generally recommended to replace a toilet if it's cracked, leaking, or no longer flushing properly.
When considering a toilet replacement, it's a good idea to consult a professional plumber. They can assess the condition of your existing toilet, provide recommendations on a suitable replacement model, and handle the installation process properly to ensure it functions efficiently and doesn't cause any leaks or other issues.