How loud and messy is it?

The pump is as loud as a petrol strimmer, but the indoor work takes 1–2 hours. There is almost no mess: water with deposits flows back into the stack through the entry point, and the plumber puts down sheeting.

Will 200 bar damage old pipes?

Standard PVC and multilayer pipes — no, they are rated for much higher. Old corroded cast iron — theoretically yes, which is why an experienced plumber first runs a snake or inspects with a camera before deciding whether to jet.

How is hydro jetting different from "Krot" and household gels?

Chemicals soften organic matter but only act where water sits (usually in the trap and the first bend). Hydro jetting physically removes deposits from every wall along the whole pipe length — the effect is comparable to replacing the pipe.

Can I schedule hydro jetting preventively, just in case?

For an apartment — it makes sense every 3–5 years, especially if you cook a lot. For restaurants, cafes and food service — mandatory 1–2 times a year. For a private home with a septic tank, it is also useful before a septic pump-out.

Hydrodynamic drain cleaning — how it works, when it is needed, what it costs

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Hydrodynamic drain cleaning — how it works, when it is needed, what it costs | KABLAY