How To Thaw Frozen Pipes Underground

Why Sewer and Drain Pipes Freeze in Minnesota

Frozen sewer and drain lines are common in Minneapolis and across Minnesota due to extreme winter conditions. Pipes can freeze for several reasons, including:

• Prolonged subzero temperatures

• Shallow or poorly insulated pipe depth

• Standing water inside the pipe

• Improper slope that allows water to sit

• Older sewer systems or aging infrastructure

Commercial properties are especially vulnerable because they often have long pipe runs, wide-diameter lines, and exterior drains exposed to cold air.

When water freezes inside a pipe, it expands. This can completely block flow and, in some cases, crack or damage the pipe if not handled properly.

---

Why DIY Thawing Methods Often Fail

Many property owners attempt to thaw frozen sewer lines themselves using space heaters, torches, or chemical solutions. These methods are risky and frequently ineffective.

DIY thawing can lead to:

• Cracked or collapsed pipes

• Fire hazards

• Partial thawing that quickly refreezes

• Damage to surrounding soil or infrastructure

Frozen sewer lines require controlled heat, pressure, and experience to clear them safely. That is why professional hot water jetting is the preferred solution.

---

How Hot Water Jetting Clears Frozen Sewer Lines

Hot water jetting is one of the most effective methods for clearing frozen sewer and drain pipes. In the demonstration video, Drain King Inc uses a professional-grade hot water jetting unit operating at 4 gallons per minute and up to 4,000 PSI.

Water temperatures typically range between 120° and 180°, allowing the ice to melt rapidly without damaging the pipe.

The jetting nozzle is designed with:

• Forward jets that melt ice ahead of the nozzle

• Rear jets that wash away ice and debris as the hose advances

This creates a clear path through the frozen pipe, restoring full flow quickly and efficiently.

---

Pipe Sizes and Systems We Can Clear

Drain King Inc has the equipment and experience to clear frozen pipes across a wide range of applications, including:

• Frozen water supply lines

• Frozen sanitary sewer lines

• Frozen storm drains

• Frozen parking lot drains

• Frozen commercial roof drains

From small residential lines to large commercial and municipal systems, Drain King Inc can clear frozen pipes from 1 inch up to 36 inches in diameter.

---

Residential and Commercial Frozen Pipe Solutions

Frozen sewer lines do not just affect homes. Businesses, apartment complexes, warehouses, and retail properties can experience severe downtime when drains freeze.

Hot water jetting is ideal for:

• Residential sewer and drain lines

• Commercial buildings

• Parking ramps and lots

• Industrial facilities

• Roof drainage systems

Because hot water jetting fully clears the pipe, it reduces the risk of refreezing compared to partial thawing methods.

---

Serving Minneapolis and All of Minnesota

Drain King Inc not only serves the entire Minneapolis–St. Paul metro area we also serve the entire state of Minnesota! If you are dealing with a frozen sewer line, frozen drain pipe, or frozen commercial drain, professional help is available.

Watch the video above to see hot water jetting in action, then contact Drain King Inc today.

Looking for Ice Dam Removal? Click here to learn more about that service.