The answer to 'when to replace hydro jetting' is that hydro jetting should typically be replaced every 3-5 years, or sooner if it is not effectively clearing clogs or maintaining good water flow. Hydro jetting uses high-pressure water jets to clear out built-up debris, grease, and other blockages in your plumbing system. Over time, the nozzles and other components can wear down, reducing the effectiveness of the hydro jetting process.
It's important to have a professional plumber inspect your hydro jetting system regularly and recommend when it needs to be replaced. Waiting too long to replace the system can lead to more frequent clogs, slower drainage, and potential damage to your pipes.