How long does a walk-in tub take to fill and drain?
Direct answer: fill time is gallons divided by your faucet’s real flow. A 60-gallon fill takes about 3⅓ minutes at the 18 gallons per minute Ella’s Bubbles rates its fast-fill faucet for (at 60 psi, ideal plumbing), and about 8½ minutes at 7 gallons per minute, closer to what many older homes deliver. Draining takes roughly 6 to 15 minutes through a standard drain and a few minutes with a fast or dual drain. You sit through both, so a 20-minute soak is often 30 to 45 minutes in the tub. Time your own faucet with a bucket below.
Reviewed October 15, 2026. Faucet ratings and capacities are from Ella’s Bubbles spec sheets; drain ranges are from Safe Step and Retirement Living, listed under Sources.
Why fill and drain time matter more in a walk-in tub
With a regular tub you can fill it, then step in. A walk-in tub works the other way: you sit down, close the watertight door, and only then fill. The door cannot open until the water is gone, because the weight of the water is what helps hold it shut. So you are seated for the whole fill and the whole drain.
For someone who gets chilly, that wait is the most common complaint. A jetted tub adds one more wrinkle: water jets should not run until the water is above the highest jet, so you cannot start the massage early.
Bath timeline calculator
Step 1 (optional): measure your faucet with a bucket
Turn the tub faucet fully on into a bucket of known size and time how long it takes to fill.
Your faucet flow will appear here.
Step 2: your tub and habits
What makes filling slow
- The faucet. Walk-in tubs are sold with high-flow faucets for this reason. Ella’s spec sheets rate their five-piece fast-fill faucets at 18 gallons per minute (16 on the Petite and the two-seat Escape and Companion), fed by two 3/4-inch supply lines. Those figures assume 60 psi and ideal plumbing; most homes get less.
- Your home’s water pressure. Low pressure means a slow fill no matter which faucet you buy. Your bucket test shows what your house can really deliver.
- Tub size. Occupied capacity runs from 30–50 gallons on Ella’s compact Petite to 85–135 gallons on the two-seat Escape. At the same faucet, the big tub takes roughly three times as long to fill.
- The jets. Water jets should not run until every jet is under water; Ella’s manual calls that level the waterline and warns that running the pumps dry can damage them. So a jetted bath cannot start on a half-full tub.
- Running out of hot water. If your water heater cannot supply enough hot water, the last part of the fill turns lukewarm. An inline heater keeps warm water warm; it cannot fix a cold fill. Our sister site explains how to check your water heater.
What makes draining slow
- The drain design. Safe Step puts the average walk-in tub at 6 to 15 minutes to drain. Fast-drain systems with larger or dual drains, or a pump assist, can cut that to a few minutes. Ella’s current tubs use two independent 2-inch floor drains for that reason.
- Your home’s drain line. An older, narrow, or partly clogged line limits even the best tub drain. Two tub drains still empty into one house line.
- Hair and soap. A partly blocked stopper adds minutes. Clean it often.
Six ways to stay warm and comfortable during the wait
- Warm the room first. Run the bathroom heater or close the door a few minutes before your bath.
- Drape a towel over your shoulders while the tub fills, and keep a robe within reach for the drain.
- Look for a heated seat or backrest if you are shopping. Ask which models have one.
- Start the air jets early if your manual allows it; some air systems warm the air they push.
- Use a handheld shower on your shoulders while the water drains.
- Ask about fast-drain options before you buy.
The wait on a wet seat is its own problem, and our sister site on tub-and-shower combinations covers it well: see drain time and the wet-seat wait.
Safety: never open the door to hurry the drain. Water will flood the floor and can make you slip. If you feel unwell in the tub, use the drain, call for help, and wait for the water to go down.
Want the fill and drain times for a specific model? We can send spec sheets with your written quote. Aging Safely Baths is BBB accredited and offers Ella’s Bubbles, Hydro Dimensions, Bestbath (including RANE by Bestbath) and Meditub.
Questions people ask
Can I open the walk-in tub door before it drains?
No. The water presses on the door and seal, and opening it would flood the bathroom. Stay seated until the tub is empty.
Is the "fill time" on a spec sheet accurate?
Treat it as a best case. Makers test with good water pressure and an empty tub. Your bucket test is a better guide to your home.
Does a fast drain need special plumbing?
Some fast-drain systems rely on a larger drain line or a pump. Ask the installer to look at your existing drain before you choose one; an older or narrow line may limit how fast any drain can work.
How many gallons does a walk-in tub hold?
It varies widely by model. Ella’s Bubbles lists occupied capacities from 30–50 gallons (Petite) to 85–135 gallons (Escape, two seats). Check the spec sheet for the model you are quoted, and remember that water jets need the level above the top jet.
Can I fill the tub before getting in?
No. With a walk-in tub you sit first, close the door, then fill. That is the trade-off for the low step-in.
Want a second opinion on a jetted tub?
Tell us about your bathroom and what hurts. A specialist from Aging Safely Baths will give you an honest written quote. There is no deadline and no pressure, and you are welcome to compare us with anyone.
Sources
- Ella’s Bubbles spec sheets: Deluxe, Petite, Royal, Elite, Ultimate (dealer copies) and Escape (PDF): faucet flow ratings, occupied capacity, dual 2-inch drains.
- Ella acrylic walk-in bathtubs owner’s manual (rev. 03/18): waterline rule for the jets.
- Retirement Living, walk-in tub guides (how walk-in tubs fill and drain).
- Safe Step Walk-In Tub, drain time article (average 6 to 15 minutes).