Home Improvement

Different Types of Bathtubs: A Buyer’s Guide

The wrong tub purchase costs an average of $4,200 to undo, mostly because the rough plumbing has to move and the surrounding tile gets demolished. Understanding the different types of bathtubs before you commit prevents the most expensive mistake in a bathroom remodel: ordering a tub that does not fit your space, your plumbing, or how you actually bathe. Tub selection breaks down into seven major categories, each with distinct installation requirements, price points, and lifestyle fit. Here is the realistic breakdown of every type, what it costs, and where it works best.

Alcove Bathtubs

The standard three-walled tub installed in 80 percent of American bathrooms. Sized at 60 by 30 inches and 14 to 17 inches deep. Slides into a recess flanked by walls on three sides with the front skirt facing into the room.

Pros: cheapest tub style, widely available, simple to install, fits standard plumbing. Pricing runs $250 to $1,200 for the tub alone, with installed cost typically $1,500 to $4,000. Cons: shallow water depth, limited soak experience, generic look. Best for budget remodels, kids’ bathrooms, and rentals.

Freestanding Bathtubs

The dramatic centerpiece tub that sits in the open with finished sides on all four faces. Includes clawfoot, pedestal, and modern slipper styles. Sized 55 to 72 inches long, often 22 inches deep or more.

Pros: visual showpiece, deep soaking, fits nearly any bathroom layout where floor space allows. Pricing runs $700 to $6,000+ for the tub. Cons: floor reinforcement may be needed (a filled cast iron clawfoot weighs 600+ lbs), separate freestanding faucet adds $400 to $1,500, and surrounding cleaning is harder than alcove. Best for primary bathrooms with at least 8 by 10 ft of floor space.

Drop-In Bathtubs

A tub shell that sits inside a custom-built deck or surround. Common in luxury master baths from the 1990s and still popular in transitional designs.

Pros: customizable surround in tile, stone, or wood; wide range of shapes including oval and rectangular; integrates with steps for sunken-tub designs. Pricing $400 to $3,000 for the tub plus $1,000 to $5,000 for the deck and surround. Cons: deck takes valuable floor space, no built-in skirt means the surround does all the visual work, and dated surround styles age the bathroom fast.

Undermount Bathtubs

Similar to drop-in but the tub mounts under a stone or solid-surface deck so the rim is hidden. Cleanest visual, with the deck flowing seamlessly into the tub interior.

Pros: spa-like clean look, works beautifully with stone slabs, no rim to catch dirt. Pricing $800 to $4,000 for the tub plus deck cost. Cons: most expensive of the deck-mounted styles, harder to replace later because the slab is fitted to the tub. Best for high-end remodels with stone countertops in adjacent vanity areas.

Soaking Tubs

Defined by depth (typically 18 to 27 inches deep) rather than shape. Available as freestanding, drop-in, or undermount. Designed for full-body submersion up to the shoulders. Often Japanese-inspired ofuro style at 24 to 27 inches deep.

Pros: legitimate spa experience, true muscle relaxation, often smaller footprint than a standard tub but holds more water. Pricing $1,200 to $8,000. Cons: water heater capacity becomes a real issue (a 75-gallon soak from a 50-gallon water heater means cold tub), and entry/exit can be tricky for older bathers without a step.

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Walk-In Bathtubs

Designed for accessibility with a watertight door, low threshold (usually 4 to 7 inches), and built-in seat. Sized similarly to standard alcove tubs but plumbed for fast fill and drain.

Pros: independence for older or mobility-limited bathers, hydrotherapy jets common, slip-resistant interior. Pricing $2,000 to $10,000 for the tub plus $1,500 to $5,000 installed. Cons: bather must be inside before water fills and remain until it drains (can take 5 to 10 minutes each way), and the seated position is not a true reclining soak. Best for aging-in-place renovations.

Whirlpool and Air Bathtubs

Tubs with built-in jets that circulate water (whirlpool) or air (air tub) for hydrotherapy. Often combined with chromatherapy lighting and inline heaters.

Pros: spa experience at home, jets target sore muscles, popular in primary baths. Pricing $1,500 to $8,000 for the tub. Cons: motor noise (60 to 75 dB on most units), maintenance for whirlpool jets to prevent biofilm buildup, electrical work required, and air tubs need a dedicated GFCI circuit. The hidden cost is operation: a 65-gallon jetted tub heated to 102°F uses about $1.50 in water and electricity per session.

Comparing the Different Types of Bathtubs

  • Cheapest option: Alcove acrylic tub, $250 to $700
  • Most luxurious: Freestanding stone resin or copper tub, $3,000 to $12,000
  • Best for small bathrooms: Compact alcove or corner soaking tub
  • Best for resale value: A clean alcove tub-shower in a secondary bath, freestanding in primary
  • Best for accessibility: Walk-in tub or curbless shower (often a better choice than walk-in tub)
  • Best for soaking: Japanese ofuro or oversized freestanding

Material Choices and What They Cost

Tub material affects price, weight, heat retention, and lifespan:

  • Acrylic: $200 to $2,500. Lightweight, warm to the touch, scratches show but buff out. Most popular today
  • Fiberglass (FRP): $200 to $700. Cheapest, lightest, but gel coat wears in 8 to 12 years
  • Cast iron with porcelain enamel: $500 to $2,500. Heaviest, longest-lasting, holds heat best, may need floor reinforcement
  • Steel with porcelain enamel: $200 to $800. Mid-weight, durable, but enamel chips on impact
  • Stone resin: $1,500 to $6,000. Solid feel, premium look, retains heat well
  • Copper: $3,000 to $12,000. Statement piece, develops patina, antimicrobial

Installation Considerations

Before ordering any tub, confirm three things. First, the dimensions fit through the bathroom door frame, hallways, and into the install spot. A 72-inch freestanding tub will not pass through a standard 32-inch doorway without temporary trim removal. Second, the floor will support the filled weight. A 50-gallon cast iron tub holds 415 lbs of water plus its own 350 lbs, total 765 lbs concentrated in 30 sq ft. Joists may need sistering. Third, the rough plumbing matches the tub’s drain location and overflow placement.

Always test-fit a freestanding tub on the bare subfloor with the connecting plumbing accessible before tile goes in. The cost of moving a drain after tile is roughly 4x the cost of getting it right the first time.

Frequently Asked Questions

Alcove acrylic remains the volume leader for secondary bathrooms. Freestanding soaking tubs lead the primary bath market, with matte black, white, and stone resin finishes most requested.

What is the difference between a soaking tub and a regular tub?

Depth. Soaking tubs are 18 to 27 inches deep versus 14 to 17 inches for standard alcove tubs. Soakers also tend to be slightly shorter in length to fit the same room footprint while allowing full submersion.

How much does it cost to install a bathtub?

Alcove acrylic: $1,500 to $4,000 installed. Freestanding: $3,000 to $10,000. Walk-in: $4,500 to $15,000. Drop-in or undermount: $4,000 to $12,000 depending on surround material.

Do freestanding tubs require special plumbing?

Yes. Most freestanding tubs need either a freestanding floor-mounted faucet or a wall-mounted faucet positioned to clear the tub edge. Plan plumbing rough-in based on the exact tub model before pouring concrete or framing walls.

Are walk-in tubs worth the cost?

For homeowners with mobility limitations who specifically want a bath rather than a shower, yes. For most aging-in-place projects, a curbless walk-in shower with grab bars and a built-in seat costs less, takes less water heating capacity, and offers better long-term flexibility.