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How fast does a walk-in tub drain after a bath?

Updated September 2026

▶Glossary8
  1. How the Dual Drain Empties the Tub so Quickly
  2. Why the 52-Second Test and the Two-Minute Figure Differ
  3. Models That Drain Differently
  4. Where the Drains Are and What Else Uses Them
  5. Why the Drain Speed Matters at the End of a Bath
  6. Related Guides
  7. Related Videos
  8. Common Questions

An Ella walk-in tub drains by gravity through its 2-inch drains and typically empties in two minutes or less once it is connected to a proper 2-inch drain line. Ella's own field test of the dual drain system, shown in the video on this page, completed drainage in 52 seconds, though the speed in your home depends on the drain conditions and piping of the house. Drainage and Fill Time covers the drain and the faucet together; this page looks only at the drain: how it works, what slows it down, and which models empty differently.

How the Dual Drain Empties the Tub so Quickly

Most Ella walk-in tubs are built with two 2-inch drains rather than a single drain, and there is no pump. Water flows straight down through the two 2-inch openings and out of the tub, so the speed comes from the size of the openings and the pull of gravity rather than from anything that can wear out or lose power. The dual drain video shows the hardware in detail:

  • The drains are gravity-driven T-type four-port dual 2-inch drains.
  • Each drain is independently operated, with large dial openers fitted with extenders for an easier grip and turn.
  • The dials function as overflow protection and use a stainless steel cable with a lever to open or close each floor drain.
  • The floor drain covers are height adjustable for optimum sealing and draining.
  • The dual drain also works as a vent system, allowing fast air pocket relief and drainage.

That vent function is part of the speed. Air pockets are relieved rather than fighting the outflow, so the tub keeps draining steadily to the end instead of slowing as the water level drops. The height-adjustable covers matter for the other half of the job, because a cover set for optimum sealing is what keeps a full tub full while you bathe.

Why the 52-Second Test and the Two-Minute Figure Differ

The 52 seconds comes from Ella's field tests under its own conditions. The two minutes or less is the figure Ella gives for a tub connected to a proper 2-inch drain line in a home, and it is the number to plan around. Between the two sits everything on the house side of the drain: the size of the drain line, the run to the main stack, the trap, and any partial blockage in it. Because the system is gravity driven, the house drain also has to sit below the tub outlet. Draining into a washing machine box or any drain higher than the tub calls for a pump arrangement instead, which is a plumbing decision to settle with your installer before the tub is set in place. If your tub takes noticeably longer than two minutes, the house drain and the trap are the first places to look, since the tub itself does nothing but let the water fall.

Three things to confirm before you call anyone:

  1. Both drains are fully open. Each one is operated independently, so a dial left closed leaves only one opening doing the work.
  2. The tub is connected to a 2-inch drain line, which is what the two-minute figure assumes.
  3. Other fixtures on the same line drain normally. A slow sink or shower nearby points to the house plumbing, not the tub.

Models That Drain Differently

The Ella Standard ships with one 2-inch gravity floor drain with an overflow and an emergency pull-up chain rather than the dual drain, so it empties through a single opening. It is still gravity fed through a 2-inch drain, but the two-dial description above does not apply to it. At the other end of the line, the HomeCare Transfer Bathtub works from an 80 gallon internal tank that pre-heats water while the bather is being prepared: it fills in about 90 seconds after the bather is seated, drains in about 150 seconds, and refills its tank in about 11 minutes for the next bath. It is built for caregiver-supervised bathing only. How long does it take to fill a walk-in tub? covers the fill side of the same models, and the fill is the slower half of any bath: the Ella faucet delivers about 16 gallons per minute at best, while the drain empties the same water in a fraction of that time.

Where the Drains Are and What Else Uses Them

Every Ella tub is built with a door, and the drains sit on the opposite side from it: a right-side door tub has its drains on the left, and a left-side door tub has its drains on the right, as you face the tub. That is why the door side is driven by where your house drain is, and why the side should be confirmed with your installer before ordering, as Can I Order an Ella Walk-In Tub Without a Door? explains. Shower water leaves the tub the same way bath water does. If you rinse with the hand shower on the fast-fill faucet set, or add the shower column kit for an overhead rain shower, the water goes out through the same gravity drains in the same two minutes or less; Can you take a shower in a walk-in tub? covers the shower options.

Why the Drain Speed Matters at the End of a Bath

A walk-in tub fills after you are seated and empties before you step out through the door, so the drain sets how long you sit at the end of a bath. A drain that empties in two minutes or less keeps that wait short, which is the everyday reason Ella's dual drain is a feature rather than a detail. If yours is far slower, or water stays in the tub after both dials are open, open a ticket at ellasbubbles.com/support or call the team at (800) 480-6850 with your model, your serial number and a short video of the drains open. Any work on the house drain line is done by a local licensed plumber.

Chapters in this video
  1. 0:00 Dual Drain System Overview The video introduces the independently operated two-inch drains with large dial openers and adjustable floor drain covers.
  2. 0:23 How Dual Drain Technology Works Ella's dual drain technology uses gravity-driven T-type 4-port dual 2-inch drains with overflow protection and a vent system.
  3. 0:47 Drainage Speed And Factors Field tests show drainage completes in 52 seconds, but actual drainage time depends on home drain conditions and piping.
  4. 1:36 Contact Ella's Bubbles Customers can call Ella's Bubbles or visit the website for more information.

Watch: Walk-In Tubs with Dual Drain Technology - Easy & Fast Drainage | Ella’s Bubbles with chapters and a full transcript.

Chapters in this video
  1. 0:00 Ella's Dual Drain Technology Ella's Bubbles walk-in tubs feature exclusive dual drain technology with oversized two-inch drains for efficient water removal.
  2. 0:17 How Dual Drains Work The video explains how Ella's dual two-inch drains connect to a house drain, offering maximum draining capacity.
  3. 0:47 Connecting to Your House Drain The video demonstrates connecting the tub's dual four-port t-type drains to a house drain on either the left or right side.
  4. 1:14 Dual Air Vents and Gravity Easy-turn drain handles double as air vents, eliminating air pockets and maximizing water outflow through a gravity-driven system.
Chapters in this video
  1. 0:00 Ella's Dual Drain Technology Ella's Bubbles walk-in tubs feature dual four-port two-inch drains for fast and efficient draining.
  2. 0:17 Oversized Two-Inch Drains Ella's walk-in tubs use two oversized two-inch drains, doubling air vent capacity to speed water out.
  3. 0:37 Connecting Your House Drain Customers can connect their house drain to all four ports for maximum draining capacity or seal unused ports.
  4. 1:01 Gravity Driven Drain System Ella's drain system is gravity-driven, so customers never worry about pump or power failure slowing the drain process.

Common Questions

How long does an Ella walk-in tub take to drain?
Once connected to a proper 2-inch drain line, an Ella tub typically drains in two minutes or less. Ella's field tests of the dual drain system completed drainage in 52 seconds, but drainage in your home depends on the drain conditions and piping of the house.
Does a walk-in tub need a pump to drain the water?
No. Ella tubs drain by gravity, with water flowing straight down through the 2-inch openings and out of the tub. A pump only enters the picture when the house drain sits higher than the tub, such as a washing machine box, and that is planned with your installer.
Why does my walk-in tub drain slower than two minutes?
The tub side has no moving parts, so a slow drain almost always traces to the house side: a drain line smaller than 2 inches, a long run, a trap or a partial blockage. Confirm both drain dials are fully open, then have a local licensed plumber check the drain line.
Do all Ella walk-in tubs have two drains?
Most Ella tubs use the dual 2-inch gravity drain with two independent dial openers. The Ella Standard is the exception, shipping with one 2-inch gravity floor drain with an overflow and an emergency pull-up chain.
Which side of the walk-in tub are the drains on?
The drains are on the opposite side from the door. A right-side door tub has its drains on the left, and a left-side door tub has its drains on the right, as you face the tub. Confirm the side with your installer before ordering.
How fast does the HomeCare Transfer Bathtub drain?
The HomeCare Transfer Bathtub drains in about 150 seconds and fills in about 90 seconds from its 80 gallon internal tank, which refills in about 11 minutes for the next bath. It is built for caregiver-supervised bathing only.

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