6 Best RV Soaking Tubs

Most people think a real bath is the first thing you sacrifice when you move into an RV. They picture cramped, plastic shower stalls and quick, utilitarian rinses. But after years on the road, I can tell you that a deep, relaxing soak is not only possible, it can completely change your small-living experience.

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Key Factors for Choosing Your RV Soaking Tub

Before you even look at models, you have to get real about the three big constraints of any RV: weight, water, and space. Ignoring these is the fastest way to create a serious problem. Every single item you add to your rig counts against its Gross Vehicle Weight Rating (GVWR), and a tub—especially one full of water—is one of the heaviest additions you can make.

Let’s talk specifics. Water weighs about 8.3 pounds per gallon. A small 30-gallon soaking tub adds 250 pounds of water, plus the weight of the tub itself. An acrylic tub might be 50 pounds, while a cast iron one could be 300 pounds before you even add water. This weight has to be supported by your floor and carried by your chassis, axles, and tires.

Then there’s the water logistics. Filling that 30-gallon tub might use most of your 40-gallon fresh water tank, leaving little for anything else until you refill. And where does it go? That water immediately fills your gray tank, so you need to be at a full hookup site or have a plan for dumping right away. Finally, your standard 6-gallon RV water heater can’t possibly fill a whole tub with hot water; you’ll need a tankless, on-demand water heater to even make it work.

Here’s your pre-purchase checklist. Be honest with yourself on these points:

• Weight: What is your RV’s cargo carrying capacity? Can your floor support 400+ pounds concentrated in one small area?
• Water: How large are your fresh and gray water tanks? Are you willing to upgrade your water heater?
• Dimensions: Will the tub physically fit through your RV’s door? What is the exact footprint you have to work with, and where is the existing drain located?

RecPro 24×40 Left Drain: A Classic RV Fit

If you’re looking for a straightforward upgrade from a standard RV shower pan, this is your starting point. The RecPro tub is designed specifically for RVs. That means it’s lightweight fiberglass, has a textured slip-resistant bottom, and comes in standard RV dimensions that often make for a relatively simple replacement.

Don’t expect a deep, luxurious spa experience here. This is more of a very deep shower pan that allows for a seated soak. It’s perfect for bathing kids or just getting a decent soak without demanding too much from your RV’s systems. Its shallow depth means it uses far less water than a residential tub, making it a practical choice for those who are frequently off-grid. Think of it as the most realistic and functional entry into the world of RV tubs.

The Serenity Soak Tub: Deepest Japanese Soak

For those who prioritize soak depth over length, the Japanese-style soaking tub is a game-changer. The Serenity Soak Tub is a perfect example. It features a much smaller footprint than a traditional tub but is significantly deeper, allowing you to sit upright and be submerged up to your shoulders. This design is brilliant for small bathrooms where floor space is at a premium.

The primary tradeoff is water volume. Because it’s so deep, it can use a surprising amount of water to fill, putting a strain on your fresh and gray tanks. The high sides can also be a challenge for accessibility. But if your goal is a truly immersive, therapeutic soak and you have the water capacity (and an on-demand water heater) to support it, this style of tub delivers a spa-like feel that’s hard to beat in a tiny space.

Empava 48" Freestanding: Modern Luxury Tub

The Empava 48" freestanding tub is for those building a high-end skoolie or renovating a large fifth wheel with a residential feel. Its sleek, modern lines make a bold statement, and at 48 inches, it’s one of the smallest freestanding models you can find. This is not a tub you just drop into an existing space; it’s a centerpiece you design the bathroom around.

The challenges here are significant. Freestanding tubs are heavier than drop-in models, and you absolutely must bolt it to the floor securely to prevent it from shifting or breaking loose during travel. The plumbing is also more exposed and complex. This option is best suited for stationary RVs or for experienced builders who can properly reinforce the floor and secure the fixture for a life on the road. It’s a luxury, and it comes with the weight and installation complexity to match.

Lippert Better Bath: The Practical Sit-Bath

Lippert is a household name in the RV world for a reason, and their Better Bath series is all about practicality. These tubs often come with a molded seat, creating a "sit-bath" configuration. This is an excellent compromise, offering more comfort than a shower pan without the full water and space requirements of a traditional soaking tub.

The built-in seat is fantastic for water conservation, as you don’t need to fill the entire basin to get a comfortable soak. It’s also a great feature for anyone with mobility issues who finds it difficult to get up from the low position of a standard tub. While you can’t fully stretch out, the Lippert Better Bath provides a safe, comfortable, and water-efficient way to enjoy a bath in your rig. It’s the sensible, no-fuss upgrade.

Tuff Stuff Stock Tank: A Rugged DIY Option

For the DIY-inclined RVer, a galvanized steel stock tank offers a rugged, affordable, and surprisingly stylish solution. These tanks are incredibly durable and come in various small, round, or oval shapes that can fit into unconventional spaces. You can find them at any farm supply store, and with a little creativity, they can be transformed into a unique soaking tub.

This is not a simple project, however. You’ll need to drill your own holes for the drain and overflow, and the metal can be unforgiving. You’ll also want to coat the interior with a suitable marine-grade epoxy or paint for a smoother, more comfortable, and long-lasting finish. The biggest hurdle is weight; steel is heavy, so this is best for a bus conversion or tiny home on a heavy-duty frame, not a lightweight travel trailer. It’s a rewarding project if you have the skills, but it’s far from a plug-and-play option.

Kingston Brass Aqua Eden: Heavy-Duty Cast Iron

Let’s be clear: a cast iron tub is the nuclear option for an RV. The Kingston Brass Aqua Eden is a beautiful, classic tub that retains heat like nothing else, providing the most luxurious soaking experience possible. But at 250-300 pounds empty, it is dangerously heavy for almost any standard travel trailer or motorhome.

This option should only be considered for stationary park models or skoolies built on commercial bus chassis that can handle extreme weight. You will need to substantially reinforce the floor beneath it, not just with extra plywood but likely with welded steel cross-members tied directly to the frame. For 99% of RVers, this is impractical and unsafe. For that 1% with the right foundation and a no-compromise vision, it offers unmatched durability and performance.

Installation & Water Heater Considerations

Choosing the tub is only half the battle. Installing it correctly is critical for safety and function. For any tub heavier than a standard acrylic RV model, you must assess and likely reinforce your bathroom floor. This often means adding extra joists or a thicker subfloor to distribute the load and prevent sagging or, worse, structural failure.

Securing the tub is non-negotiable. On travel days, your rig is a rolling earthquake. Tubs must be anchored firmly to the floor and/or walls to prevent them from shifting. For drop-in models, this often involves a mortar bed and securing the flange to the wall studs. For freestanding tubs, robust floor brackets are essential. Don’t just rely on silicone caulk to hold it in place.

Finally, let’s talk about the heart of the system: your water heater. A standard 6-gallon or 10-gallon RV water heater will give you a few minutes of hot water before it runs cold, resulting in a lukewarm, disappointing bath. To properly use any of these tubs, an on-demand, tankless water heater is practically a requirement. These units heat water as it flows, providing a continuous supply of hot water so you can actually fill the tub and enjoy a proper soak. It’s a significant but necessary upgrade for this project.

Ultimately, adding a soaking tub to your RV is a fantastic upgrade, but it’s a decision that ripples through your entire rig’s systems. It forces you to think critically about weight distribution, water management, and structural integrity. Choose the right tub for your specific RV and travel style, and you can bring one of the best comforts of home with you wherever you roam.