Kohler vs Swiss Madison Bathtubs: Which Brand Fits You?
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
When you compare kohler vs swiss madison bathtub options, you see two distinct approaches to alcove installation. Both brands offer 60-inch by 30-inch white acrylic tubs designed for standard bathrooms. The main difference lies in comfort and construction. Kohler prioritizes deep soaking with a 19-inch depth and molded lumbar support. Swiss Madison focuses on stability with integrated armrests and a lighter, fiberglass-reinforced shell. Your choice depends on whether you value soak depth or structural support.
Key differences
| Aspect | Kohler Underscore 60" Alcove Tub | Swiss Madison Voltaire 60" Alcove Tub |
|---|---|---|
| Soaking Depth | 19 inches | 13 inches |
| Material | Acrylic | Fiberglass reinforced acrylic |
| Drain Location | Left-hand | Right-hand |
| Comfort Features | Molded lumbar support | Integrated armrest |
| Weight | 128 pounds | 68 pounds |
Which one should you choose?
Choose Kohler Underscore 60" Alcove Tub if
- You prefer a deeper soak with a 19-inch water depth.
- You need a left-hand drain configuration.
- You want molded lumbar support for back comfort.
Choose Swiss Madison Voltaire 60" Alcove Tub if
- You value integrated armrests for stability and ease of use.
- You need a right-hand drain location.
- You prefer a lighter tub that is easier to handle during installation.
Verdict: Choose the Kohler Underscore if you prioritize deep soaking comfort and built-in back support. Select the Swiss Madison Voltaire if you need integrated armrests for stability or require a right-hand drain. Both fit standard alcove spaces, but they serve different physical needs.
Kohler vs Swiss Madison Comparison
Soaking depth
Soaking depth determines how much of your body is submerged. Kohler’s Underscore model offers a 19-inch depth, which is deeper than the standard 21-inch bath it mimics. Swiss Madison’s Voltaire provides a 13-inch depth. The extra depth in the Kohler tub allows for a more immersive experience, retaining the feeling of a full soak despite the lower step-over height. If you prefer deep water coverage, Kohler has the advantage here.
Weight
The weight of the tub affects floor load and handling during installation. The Kohler Underscore weighs 128 pounds, while the Swiss Madison Voltaire weighs only 68 pounds. The Swiss Madison unit is significantly lighter, likely due to its fiberglass-reinforced acrylic construction compared to Kohler’s standard acrylic build. This lighter weight may make the Swiss Madison easier to maneuver into place or suitable for floors with stricter weight limits.
Drain location
Drain location is critical for plumbing alignment. The Kohler Underscore features a left-hand drain, meaning the plumbing exit is on the left side when facing the tub. The Swiss Madison Voltaire comes with a right-hand drain. This is a binary choice based on your existing plumbing. If your pipes are on the left, Kohler fits directly. If they are on the right, Swiss Madison is the match. You must choose based on your bathroom layout.
Comfort features
Comfort details vary between these two models. Kohler includes molded lumbar support to aid your back during long soaks. It also has a slotted overflow for deep water retention. Swiss Madison focuses on stability with an integrated armrest, offering a place to rest your arms or push up for entry. Kohler’s approach targets body support, while Swiss Madison targets physical leverage and stability. Your preference for back support or arm rests will dictate the better choice.
Water capacity
Water capacity influences how much water you need to fill the tub and how long it takes. The Kohler Underscore holds 68 gallons of water. The Swiss Madison Voltaire does not list a specific gallon capacity in the provided data. Generally, a deeper tub like the Kohler requires more water to reach its 19-inch depth. If water conservation or fill time is a priority, the Swiss Madison’s shallower 13-inch depth likely uses less water, though the exact volume is unknown.
Choose the Right Tub For Your Needs
You want deep soaking and lumbar support
The Kohler Underscore offers a 19-inch soaking depth, allowing for full submersion. It includes molded lumbar support for added comfort during long baths. The 68-gallon capacity holds more water, and the integral flange simplifies installation by preventing water seepage behind the wall.
You need armrests and easier maintenance
The Swiss Madison Voltaire features an integrated armrest for stability and comfort. It weighs only 68 pounds, making it lighter and easier to handle than heavier alternatives. The fiberglass-reinforced acrylic construction is designed for durability, and the right-hand drain fits standard layouts.
You prefer a lighter tub for DIY
At 68 pounds, this Swiss Madison model is significantly lighter than the Kohler option. The built-in apron streamlines installation by avoiding the need for tile work. Its 13-inch depth is suitable for quick soaks, and the glossy white finish resists stains easily.
The products compared
Kohler Underscore 60" Alcove Tub
Best for: Left-drain alcove installations needing deep soak
- Type
- alcove
- Material
- Acrylic
- Length
- 60 inches
- Drain Location
- left-hand
- Water Capacity
- 68 gallons
- Soaking Depth
- 19 inches
View on Amazon: Kohler Underscore 60" Alcove Tub Affiliate link
This Kohler Underscore alcove tub measures 60 inches long and 30 inches wide. It holds 68 gallons of water with a 19-inch soaking depth. The left-hand drain fits specific bathroom layouts. Molded lumbar support adds comfort during use. You should choose this if you need a standard alcove fit with a left drain.
Pros
- 19-inch soaking depth for deep relaxation
- 68-gallon water capacity
- Molded lumbar support for comfort
- Integral flange simplifies installation
Cons
- Left-hand drain limits placement options
- 128-pound weight requires sturdy flooring
- No right-hand drain alternative in this model
Good fit if
- You need a left-hand drain configuration
- You want a standard 60-inch alcove size
- You prefer integral flanges for easier installation
Skip if
- You require a right-hand drain
- You need a soaking depth greater than 19 inches
- You prefer a freestanding or drop-in tub
Verdict: Kohler Underscore 60" Left-Hand Alcove Tub offers reliable comfort with its 19-inch depth and 68-gallon capacity. It fits best in bathrooms where the left drain is necessary or preferred for plumbing alignment.
Swiss Madison Voltaire 60" Alcove Tub
Best for: Right-hand drain alcove installations with armrest needs
- Type
- Alcove bathtub
- Material
- Fiberglass reinforced acrylic
- Length
- 60 inches
- Drain Location
- Right-hand
- Soaking Depth
- 13 Inches
- Color
- White
View on Amazon: Swiss Madison Voltaire 60" Alcove Tub Affiliate link
The Swiss Madison Voltaire is a 60-inch by 30-inch alcove tub made from fiberglass reinforced acrylic. It features a 13-inch soaking depth for comfortable immersion. The design includes a built-in apron for easy installation and an integrated armrest for support. It has a right-hand drain location. This model suits you if you want a durable, standard-sized tub with practical comfort features.
Pros
- 13-inch soaking depth for deep immersion
- Integrated armrest for added comfort and stability
- Built-in apron simplifies installation without tiling
- Fiberglass reinforced acrylic construction for durability
Cons
- Right-hand drain limits placement flexibility
- 68-pound weight adds handling complexity
- Standard 22-inch height may not suit all users
Good fit if
- You need a right-hand drain configuration
- You want a built-in apron for easy install
- You prefer an integrated armrest for support
Skip if
- You require a left-hand drain setup
- You need a deeper soaking depth than 13 inches
- You prefer a lighter tub under 60 pounds
Verdict: Swiss Madison Voltaire 60-inch Soaking Tub is a solid choice for standard alcove installations where right-hand drainage and armrest support are priorities. It offers reliable durability and comfort for everyday soaking.
Specifications side by side
| Spec | Kohler Underscore 60" Alcove Tub | Swiss Madison Voltaire 60" Alcove Tub |
|---|---|---|
| Type | alcove | Alcove bathtub |
| Material | Acrylic | Fiberglass reinforced acrylic |
| Length | 60 inches | 60 inches |
| Drain Location | left-hand | Right-hand |
| Water Capacity | 68 gallons | not stated |
| Soaking Depth | 19 inches | 13 Inches |
| Mount Type | alcove | not stated |
| Color | White | White |
| Dimensions | 60 × 30 × 20.3 inches | 60 × 30 × 22 inches |
| Weight | 128 pounds | 68 pounds |
| Model | 20201-LA-0 | SM-AB540 |
| Size | not stated | 60" x 30" |
Frequently asked questions
Does the Kohler Underscore tub have a left or right drain?
The Kohler Underscore 60" Alcove Tub features a left-hand drain configuration. This specific model, identified by the code 20201-LA-0, is designed for bathrooms where plumbing alignment requires drainage on the left side. If your existing pipes are on the right, this tub will not fit without modification.
Is the Swiss Madison Voltaire tub heavier than the Kohler Underscore?
No, the Swiss Madison Voltaire is significantly lighter. It weighs 68 pounds, while the Kohler Underscore weighs 128 pounds. This difference matters if you need to move the tub yourself or if your floor structure has weight limitations. The lighter construction of the Voltaire makes handling easier.
What is the height difference between these two alcove tubs?
The Swiss Madison Voltaire stands 22 inches tall, whereas the Kohler Underscore is 20.3 inches high. This 1.7-inch difference affects how the tub sits relative to your bathroom floor and surrounding fixtures. You should measure your space to ensure the taller Voltaire fits comfortably under any existing shelving or walls.
Do both tubs come in white?
Yes, both brands offer white finishes. The Kohler Underscore is listed as White, and the Swiss Madison Voltaire is described as Glossy White. Both are acrylic alcove tubs designed for standard bathrooms. The finish provides a clean, classic look that matches most bathroom decor styles without requiring additional painting or customization.
Which tub has a larger water capacity?
The Kohler Underscore holds 68 gallons of water. The Swiss Madison Voltaire does not list a specific gallon capacity in its specifications. For deep soaking, the Kohler model retains more water, which helps maintain temperature longer. If water volume is a priority, the Kohler specification is the clear choice.
Can I install the Swiss Madison Voltaire in a left-drain alcove?
The Swiss Madison Voltaire is optimized for right-hand drain installations. Its design prioritizes right-side drainage and armrest support. If your bathroom requires a left-hand drain, this model may not align with your plumbing. You would need to check if the drain can be reconfigured or choose a different tub.
Are these tubs suitable for small bathrooms?
Both tubs measure 60 inches in length and 30 inches in width. This standard size fits most alcove spaces but requires adequate clearance for installation and access. If your bathroom is tight, measure the available floor space carefully. Both models are designed for standard alcove setups, not compact or corner configurations.