Plumbing drain diagnostics · Sevier County, TN

Smoke Testing

When a sewer odor has no clear source, smoke testing helps reveal escape points in plumbing drain systems without guessing where to open a wall.

Call (865) 345-3382 Request Smoke Testing

From our work in the field

See where the smoke goes.

These are photographs from actual Speed King smoke-testing work, not stock images. A visible plume gives us a place to investigate; the condition and repair plan still need to be assessed on site.

Smoke visible during a drain-system test at a kitchen sink cabinet — Testing at a kitchen sink cabinet

Smoke visible during a drain-system test in an interior hallway or bathroom — Tracing an interior escape point

Small nail hole behind a mirror found during a smoke-testing job — A small opening found behind a mirror

Speed King smoke-testing machine set up outside — Smoke-testing equipment set up outside during a Speed King job.

A targeted diagnostic

When the smell has no obvious source.

Persistent sewer odors may point to an opening or failed connection in a plumbing drain system. Rather than opening a wall based on a guess, we introduce non-staining test smoke into the drain system at low pressure and watch for places it escapes. What the test reveals helps focus the next inspection or repair.

The right test for the right system.

Smoke testing is for plumbing drain systems. Natural gas or propane leaks require separate combustible-gas detection equipment.

Smoke testing can help reveal

Cracks or separated drain joints
Failed seals near plumbing fixtures
Open or missing cleanout caps
Open or disconnected drain connections
Potential paths for persistent sewer odors

What to expect

A straightforward visit.

Tell us what you notice

Let us know where and when the odor appears, which fixtures are nearby, and whether any recent plumbing or construction work has been done.

Test the drain system

We set up the smoke-testing equipment and introduce test smoke at low pressure. We look for visible escape points around the accessible system.

Review what we find

We show you the evidence, explain what it may mean, and discuss the next inspection or repair steps. Some conditions may call for additional testing.

Speed King Plumbing and Leak Locating

Still chasing that sewer smell?

Tell us what you have noticed. We will help determine whether smoke testing is a useful next step for your property.

Request Smoke Testing Or call (865) 345-3382

One call covers it all: here's what else we do.

Camera Inspection

Video pipe inspection to see exactly what's inside your lines.

Drain Cleaning

Professional drain cleaning for slow or completely blocked lines.

Leak Detection

Acoustic and tracer-gas methods for hidden water leaks.

Local service areas: SeviervillePigeon ForgeGatlinburgJefferson CityMorristownNewportView all by county

Quick Answers

Quick Answers: Sewer and Drain Smoke Testing

Direct answers to common questions about this service.

What can plumbing smoke testing find?

Smoke testing can help identify plumbing drain defects that let sewer odors escape, guiding the next diagnostic or repair step.

Does smoke testing check natural gas or propane lines?

No. Smoke testing is for plumbing drain systems. Natural gas or propane leaks are located with combustible-gas detection equipment.