Snake vs Hydro Jetting: Which Clears a Drain?

When a drain stops, two methods come up again and again: a drain snake, also called a cable or auger, and hydro jetting, which uses high-pressure water. People often ask which one is better. The honest answer is that they do different jobs. This post explains how each works, what each does well, and how a provider decides between them.

What a drain snake does

A drain snake is a flexible steel cable with a tip designed to bore into a blockage, catch it or break it up. It is fed into the pipe by hand or by machine, and a motor turns the cable so that the tip cuts or hooks what is in the way. For a small sink or tub, a hand-cranked version is often enough. For a longer line, a larger machine with a thicker cable is used.

A snake is well suited to a localized stoppage: a wad of hair, a lump of debris, a toy, or a small root mass that has formed a plug. It is quick to set up, it reaches around bends and it gets water moving again. Its limit is that it makes a hole through the material rather than removing all of it. In a pipe with a thick layer of grease or scale, a snake may leave a narrow channel with the buildup still on the walls. The drain runs, then slows again.

What hydro jetting does

Hydro jetting pushes water through a hose to a nozzle with several jets. The backward-facing jets pull the hose forward through the line and scour the wall, and the water carries loosened material back out. It cleans the whole pipe circumference, not just the center. See the hydro jetting page for the full picture.

Jetting is well suited to buildup: grease, soap scum, sludge, mineral scale and fine silt. It is also used on larger lines and on pipes that have been cleared several times without lasting results. Its limits are that it needs a pipe in reasonable condition, it needs access, and the equipment is bigger. A damaged or fragile pipe can be hurt by high pressure, so a provider will often look with a camera first.

A simple way to compare

• How it works: Drain snake: A cable bores through the clog; Hydro jetting: High-pressure water scours the pipe wall
• Good for: Drain snake: A single plug, hair, small objects; Hydro jetting: Grease, scale, silt and repeat clogs
• Cleans the wall: Drain snake: Not much; Hydro jetting: Yes
• Equipment: Drain snake: Small to medium machine; Hydro jetting: Larger machine, a water source
• Pipe condition: Drain snake: Gentle on most pipes; Hydro jetting: Needs a pipe that can take pressure
• Typical first choice for: Drain snake: A sink or tub clog; Hydro jetting: A main line with recurring trouble

The table gives the general pattern. It is not a rule, and a provider with a camera and experience will often make the final choice on site.

How a provider usually decides

There is no single answer, but providers tend to ask the same few questions.

• Where is the clog? A single fixture suggests a snake. A main line that backs up several drains points to something larger.
• How often has it happened? One slow drain after a long time is different from a drain cleared three times this year.
• What is the pipe made of, and how old is it? Brittle or very old pipe calls for care.
• What does the camera show? If there is a camera, it often settles the question. See what a sewer camera inspection shows.
• What is the likely cause? Hair and soap point one way, grease another, roots a third. A root mass may be cut with a cable and then cleaned with a jet. See root intrusion removal.

Many providers use both on the same job: a cable or a forward-facing jet to open the line, then a cleaning pass to clear the wall.

What about chemical cleaners?

Neither method uses chemicals. Over-the-counter chemical drain cleaners are a separate matter. They can be harsh on pipes and on skin, and a provider who comes afterwards may have to work around the product still sitting in the line. Say so at the start of the call if you have used one. The FAQ has more on this.

Cost differences

The method is one of several things that affect the price. Jetting equipment is larger, so it often costs more per visit, but whether a given job needs it depends on the pipe. We do not publish prices here, because the provider sets them. The cost page explains what changes a quote, and the questions to ask.

Which should you ask for?

You do not have to choose. Describe the problem and let the provider recommend a method, then ask why. A good answer includes what they expect to find, why this method fits and what happens if it does not work. If you are told that you need jetting but the drain has never given trouble before, ask what the camera showed. If you are told a snake will do for a drain that keeps returning, ask how long the fix is likely to last.

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Related reading

Clogged drain repair | Main line clog | Five signs of a main line clog | Drain cleaning cost