Tub types

Bariatric walk-in tubs

Wider seats, wider doors and higher weight ratings, for safe bathing at any size.

By the Walk-In Tub Pricing editorial team · Last updated · How we research prices

A wide, deep walk-in tub with an extra-wide door and heavy-duty grab bars

Quick answer

Bariatric walk-in tubs cost $4,000 to $11,0001 for the tub, per HomeGuide. HomeAdvisor reports $2,200 to $10,3002 for tubs rated over 300 pounds.

Bariatric tub costs
ItemPlanning range
Bariatric tub (tub only)$4,000 to $11,0001
Installation labor$700 to $3,0001
Plumbing upgrades$500 to $2,0003
Larger water heater$600 to $3,1001

Planning estimates from the sources cited, not quotes. Your installer's written price is the only real number. How we build these ranges.

Choosing a 500 lb capacity tub

Weight ratings vary by model. Some local installers offer bariatric tubs rated to 500 pounds. If that's what you need, check these points in writing:

  • The rating covers the seat and door, not only the tub shell. Ask for the seat's rating separately.
  • Seat width and depth. Retirement Living lists bariatric tubs at 53 to 60 inches long, 33 to 35 inches wide and up to 50 inches tall4.
  • Door width, so entry is comfortable, not a squeeze.
  • Grab bars anchored into framing, not only drywall.
  • Your floor. A full bariatric tub can hold 100 to 120 gallons1. Water weighs about 8.3 pounds per gallon, so the water alone can top 800 pounds, plus the tub and bather. Ask the installer to check the floor framing.

Hot water and drains

More water means a longer fill and a bigger water heater. A quick-drain or a larger drain line shortens the wait. See our installation cost guide.

Brands differ: ConsumerAffairs reports Kohler's walk-in bath has no bariatric model, while Independent Home offers one5.

Questions people ask

What is the weight limit of a normal walk-in tub?
It varies by model and manufacturer. Bariatric models are built and rated for heavier users. Always ask for the seat's weight rating in writing.

Sources

  1. HomeGuide, Walk-In Tub Cost. Accessed November 10, 2026.
  2. HomeAdvisor, How Much Does a Walk-In Bathtub Cost? (2025 pricing (no update date shown)). Accessed November 10, 2026.
  3. ConsumerAffairs, Average Walk-In Tub Installation Costs (2026-05-14). Accessed November 10, 2026.
  4. Retirement Living, Walk-In Tub Dimensions. Accessed November 10, 2026.
  5. ConsumerAffairs, Kohler vs. Independent Home: Which Is Best? (2025-09-12). Accessed November 10, 2026.

Every price on this page comes from these sources through our published rate card. We open each source before citing it.