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High-pressure water that scours the whole pipe
A hydro jetter is a machine that pumps water through a hose to a specialized nozzle inside the pipe. The nozzle has a forward jet that cuts into the blockage and rear-facing jets that both propel the hose forward and blast the pipe wall clean as it travels. The result is not a hole punched through the clog but a pipe scoured back to its original inside diameter, with the debris flushed downstream and out.
Pressure typically runs 1,500 to 4,000 PSI, with flow matched to the pipe size, and a pro selects different nozzles for grease, for roots, or for hard scale. Because the water reaches the full circumference of the pipe, jetting removes the greasy film that re-clogs a line within weeks of a snaking, which is why it lasts so much longer on the right job.
Hydro jetting versus snaking
A drain snake is a cable that bores through or hooks a clog. It is fast, cheap and the right tool for a single isolated blockage like a hair plug or a wad of debris. What it does not do is clean: it leaves the grease ring and the root mat largely in place, so a snaked line that re-clogs in a month was never really cleaned, only opened.
Hydro jetting is the cleaning tool. It costs more and takes more setup, but on a recurring problem it solves the cause rather than the symptom. The decision usually comes down to whether the clog keeps coming back: a one-time clog is a snake job, while a line that clogs every few months is telling you the wall is coated and needs jetting. Compare the two against what drain cleaning by snake costs to see where the value sits for your situation.
- ·Snake: bores through a single clog, fast and cheap, leaves buildup
- ·Jetting: scours the whole pipe wall clean, lasts far longer
- ·Recurring clogs = jetting; one isolated clog = snake
Where jetting wins: grease, roots and scale
Three problems are jetting specialties. Grease and fat that has coated and narrowed a kitchen or restaurant line gets sheared off the wall and flushed, where a snake just tunnels through it. Tree roots that have invaded a sewer line through a joint can be cut and cleared by a root-rated nozzle, restoring full flow. And mineral scale or hardened sludge in an older line gets stripped back rather than merely dented.
These are also the problems that come back fastest with a snake, which is why jetting earns its higher price on them. For roots specifically, jetting clears the current intrusion but does not stop regrowth, so it is often paired with a plan to line or replace the affected section. If a camera shows the pipe itself is failing, the conversation shifts toward sewer line replacement rather than repeated cleaning.
Why a camera comes first on fragile pipe
High-pressure water is powerful, and that power can harm a pipe that is already compromised. Old, thin cast iron with heavy corrosion, cracked clay, or a line with a known belly or break can be damaged by full-pressure jetting. For that reason a careful plumber runs a camera down the line first to see the pipe condition, locate the problem and confirm the pipe can take the pressure before jetting it.
The camera also tells you whether jetting is even the answer. If the scope reveals a collapsed section or roots that will simply return, money spent jetting is money better spent on lining or replacement. A camera inspection up front turns a guess into a plan, and it is why reputable jetting quotes often include or recommend a scope. Knowing what a hydro jetting job costs alongside the inspection helps you weigh the whole picture before committing.
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