A bathroom sauna sounds like a luxury renovation that calls for contractors, permits, weeks of construction - but it doesn't have to be any of that. If you've been wondering how to make a sauna in your bathroom without tearing out walls, the answer is more straightforward than you'd expect.
Pre-built kits tuck into a corner, plug into a standard outlet, and you can bring your own personal wellness oasis to life in an afternoon. We carry both infrared sauna and traditional options built specifically for tight indoor spaces, and we've helped hundreds of customers find what fits.
Learn more about turning a bathroom into a sauna the easy way below, or get in touch with our world-renowned customer service team for one-on-one support.
Benefits of a Bathroom Sauna
Having a sauna in the bathroom transforms your wellness regimen. It becomes a part of your regular routine when it's steps from your shower instead of a drive to the gym or spa.
The bathroom is also one of the best rooms in the house for a sauna because it already handles moisture and humidity with built-in ventilation. You can rinse off the second you step out, too - no towel-wrapped walk through the hallway (or through the backyard).
But we always go back to consistency as the biggest benefit of a bathroom sauna. Real relaxation and recovery don't come from one session every few weeks - or even once a week, honestly. They come from regular access with zero friction.
Better sleep is usually the first thing people notice. Some infrared models also include chromotherapy and red light therapy panels, which turns a corner of your bathroom into a full wellness station. But whether you go with the best sauna with red light therapy or a simple, traditional model, you’re investing in your health and happiness.
There's a property value angle too. Saunas are a massive selling point for home buyers. That being said, can I make a sauna in my bathroom - or is it too much work (or too expensive)?
Can I Make a Sauna in My Bathroom?
Almost certainly. You don't need a huge master bath or a full gut renovation. The real question isn't whether turning a bathroom into a sauna is feasible. It’s just which approach makes the most sense for your space and budget.
Turning your bathroom into a sauna is more doable than most people think, and there's no shortage of bathroom sauna ideas out there. They fall into three practical categories.
Adding a Sauna in the Bathroom
This is the retrofit approach - fitting a sauna into a bathroom that already exists. The main question is floor space. Most 1-2 person infrared saunas need roughly 3’x3’ to 4’x4’ of clear floor area along with a few inches of clearance on each side for airflow. A larger bathroom with an unused corner, alcove, or dead space next to the tub is usually doable.
No new plumbing is required since infrared saunas don't use water at all. They heat your body directly with infrared panels. Traditional steam saunas do need a water source for the heater rocks, which makes them more involved for a bathroom retrofit.
This is just to say that infrared is the fastest route with the fewest requirements for most people turning their bathroom into a sauna space, though.
Designing a Custom Bathroom Sauna for New Homes
Building a new house or gutting the bathroom anyway opens up a world of possibilities. You can design the sauna into the layout from scratch - custom dimensions, built-in benches, integrated drainage, and dedicated 240V electrical.
As you can imagine, this gives you the most flexibility with bathroom sauna ideas, and the result looks seamless. It's also the most expensive path by a wide margin, though. This level of investment isn't necessary for most people.
A pre-built kit delivers the same sauna experience at a fraction of the cost and timeline.
Buy a Bathroom Sauna Kit (The Easy Way)
This is the route most of our customers take, and it's what we recommend. A bathroom sauna kit is a self-contained, pre-built unit that assembles inside your bathroom in a few hours. Panels snap or buckle together. Wiring is internal. No contractor needed.
Kits range from compact one-person infrared cabins that fit in tight corners to two-person models for larger primary bathrooms. You can even take the whole thing apart and bring it with you if you move one day!
A bathroom sauna kit is the lowest-commitment way to go about turning your bathroom into a sauna without a contractor. For the sake of simplicity, this is what we’ll cover in our guide on how to make a sauna in your bathroom below.
How to Make a Sauna in Your Bathroom: Step-by-Step Guide
Here's how to make a sauna in your bathroom from start to finish once you've decided on the kit approach.
First, How Much of the Bathroom Do You Want to Dedicate to a Sauna?
Start with your floor plan. Measure the open space in your bathroom and figure out how much you're willing to give to the sauna. Most bathroom sauna ideas mean working with a corner, an alcove, or the space where a bathtub used to be. Some practical minimums to work with:
- A one-person sauna needs roughly 3’x3’ feet of floor space - about 9 square feet.
- A two-person sauna typically needs 3.5’x4’ - about 14 square feet, and the most popular size for home bathrooms.
- A three-person sauna needs closer to 4’x5’, which is possible in a large master bath but tight in a standard one.
You need to account for door clearance. Most kit saunas have outward-swinging glass doors, so be sure you have room for the door to open fully without hitting a toilet, vanity, or wall.
Bigger isn't always better when you're putting a sauna in a bathroom. A one-person unit is enough for solo sessions and takes up the least space. Two-person models are the sweet spot for most home bathrooms - enough room to sit comfortably or share the session with a partner without overwhelming the room.
Narrowing It Down to a Sauna Type
You're choosing between two main categories for a bathroom installation:
Infrared saunas are the go-to for bathroom setups. They heat your body directly with infrared panels rather than heating the air, working at lower operating temperatures (120-150°F vs 150-195°F for traditional). They produce less ambient humidity, warm up faster (in the 10-20 minute range), and draw less power. Most 1-2 person infrared units plug into a standard 120V household outlet. No electrician needed. An indoor infrared sauna kit is the path of least resistance for a bathroom.
Traditional saunas heat the air with an electric heater and sauna stones. You get the option to pour water on the stones for steam. The experience is hotter, more humid, and closer to what you'd find in Finland. These need more ventilation, a water source for the rocks, and sometimes a dedicated 240V circuit. Browse our traditional sauna for sale options if you’re willing to work a little more.
Choosing the Right Sauna Kit
Now you just need to narrow it down to brand, heater quality, wood type, and features. A few things worth prioritizing:
- Low or near-zero EMF heaters: This matters more in an enclosed bathroom space where you're sitting close to the panels
- Wood species/quality: Canadian Hemlock and Thermo-Aspen are popular for indoor saunas. Hemlock is affordable and holds up well. Thermo-Aspen is heat-treated for extra moisture resistance, which could be beneficial in a bathroom environment. Cedar is great, but it’s typically more expensive and not necessary for something that lives indoors.
- Exterior dimensions: Check the product page measurements against your measured space. Account for a few inches of clearance on all sides for airflow and safety.
- Electrical requirements: Confirm voltage and amperage before ordering. Most small infrared kits are plug-and-play on a standard outlet. Larger or traditional models may need 240V and a dedicated circuit.
We carry kits from brands like Dynamic, Maxxus, Finnmark, Sunray, and SaunaLife, all backed by manufacturer warranties and our own lifetime customer support. We have a low price guarantee, you can use HSA/FSA funds, and we even offer hassle-free financing.
Get a personalized recommendation on the best sauna company and model for YOUR bathroom.
Navigating the Installation Process
Installing a bathroom sauna kit is closer to assembling furniture than doing a renovation. Here's what the process typically looks like:
- Clear the floor space and confirm the surface is flat and level. Tile, vinyl, and concrete all work. Carpet is not ideal (too much heat retention).
- Unbox the panels and lay them out. Most kits label every piece and include a numbered assembly guide.
- Connect the panels using tongue-and-groove joints, buckle clips, or snap-lock connections. Two people make this faster, but one person can manage most 1-2 person models alone.
- Slide the bench into place and secure it.
- Plug the power cord into your outlet. For 120V infrared units, that's a standard three-prong outlet. Avoid extension cords (always plug directly into the wall).
- Run the unit empty for 20-30 minutes on the first use to burn off any manufacturing residue and confirm the heaters are working.
Total time for most 1-2 person kits: a few hours. No tools beyond what's included in the box for most models. It’s really that quick and easy.
Caring for a Sauna in the Bathroom
Bathrooms inherently have more humidity, so moisture management matters. Leave the sauna door open for 15-20 minutes after each session to let the interior air out. Run your bathroom’s exhaust fan during the session and during cooldown.
Wipe down the benches and interior walls with a damp cloth after use. We recommend using a sauna-specific wood cleaner every few weeks to prevent buildup. DON’T use bleach or harsh chemicals, though. They'll damage the wood and off-gas when heated.
Check the floor under and around the sauna periodically for moisture accumulation. A small mat or tray underneath catches sweat drips and keeps your bathroom floor clean. Beyond that, modern sauna kits are low-maintenance by design.
Tips on Using a Sauna in the Bathroom
The best bathroom sauna ideas start with building a consistent routine. Once your bathroom sauna is set up, here are a few things that make the experience better:
- Hydrate before and after. You'll lose water through sweat. Keep a glass within reach. Make sure you’re drinking electrolytes, too.
- Start somewhere around 120-130°F if you're new to sauna. Work up gradually over a few weeks. You don’t want to overdo it and cause more harm than good.
- 15-30 minutes is the sweet spot. Longer doesn't mean better. Listen to your body and step out if you feel lightheaded. Again, overdoing it will only hold you back from health goals.
- Shower before your session to wash off lotions, oils, and deodorant. These can clog the wood grain over time and create odors in the heat.
- Lay a towel on the bench to protect the wood and make cleanup easier after every session.
Turning your bathroom into a sauna space is really about removing excuses. The convenience of having it in a room you already visit every day is what separates a sauna that collects dust from one you actually use. Take the next step today!
Bringing Our Bathroom Sauna Guide to a Close
Now that you know how to make a sauna in your bathroom, the next step is finding the right kit. A bathroom sauna doesn't require a renovation, a contractor, or a massive budget. A pre-built kit, a clear corner, and a standard outlet are enough to get started.
The hardest part is choosing which one - that’s where we come in. Browse bathroom-friendly sizes all sourced from the industry's most trusted brands and backed by our price match guarantee, free shipping on most orders, and lifetime customer support.
Every sauna we sell is HSA/FSA eligible, which can save you 30-40% by using pre-tax dollars. We're proudly rated #1 on Trustpilot with over 400 five-star reviews, too - so you can rest assured we’re for you long after the sale.
Take our sauna quiz for a personalized recommendation, or reach out to our team directly!
Frequently Asked Questions
Can you have a sauna in your bathroom?
Yes. Pre-built sauna kits are designed for indoor use and fit in most bathrooms with a clear corner. A one-person infrared sauna needs as little as 9 square feet of floor space and plugs into a standard household outlet. No plumbing or construction required.
Average cost to install a sauna in the bathroom?
Expect to spend between $2,000 and $6,000 for a pre-built infrared sauna kit (most common approach). Traditional sauna kits cost more. Custom built-in saunas are the most expensive. Installation costs for a kit are typically zero since most are DIY assembly.
What are the benefits of a sauna in the bathroom?
Convenience is the biggest one. A sauna in the bathroom means you use it more often because the barrier is almost nonexistent - step in, sweat, step out, shower, done. Regular use supports relaxation, muscle recovery, and better sleep. It also adds value to your home.
What are the safety considerations for a sauna in the bathroom?
Keep the sauna away from water sources like showerheads and faucets. Make sure the electrical outlet is on a dedicated circuit and never use an extension cord. Leave clearance around all sides for airflow. Run your bathroom exhaust fan during and after sessions for ventilation. Stay hydrated, keep sessions to 30 minutes or under, and step out immediately if you feel lightheaded or dizzy.
What are the requirements for installing a sauna in the bathroom?
A flat, level floor (tile, vinyl, or concrete - not carpet), a standard 120V outlet on a dedicated circuit, enough floor space for the unit plus a few inches of clearance, and adequate ventilation. A bathroom exhaust fan is usually enough to remove humidity, but infrared saunas don’t produce much.
What are some alternative options to a sauna in the bathroom?
A basement sauna gives you the most room to work with and is typically the easiest space to fit a larger unit. A garage sauna is another strong option, especially if you already have the square footage cleared. And if you'd rather move the sauna outside entirely, a backyard sauna opens up barrel saunas, cabin-style units, and full outdoor builds.
The point is - there's somewhere in or around your home where a sauna fits. It's just a matter of figuring out where. Get started today and reach out with any questions.
