Commercial Float Tanks: How to Choose One for Your Facility

Most float center plans start with the tank. That’s the fun part: open room or enclosed pod, one unit or three, what the treatment suite will look like when it’s finished. Then the electrician walks in, looks at the panel, and the plan changes.

A commercial float tank is a building decision before it’s an equipment decision. The unit itself is the easy part. What determines whether it works in your space is the circuit, the floor, the doorway, and the air. Walk those five things first and the rest of the conversation gets short.

Start with the room, not the tank

Every Royal Spa float tank ships with the same short list of site requirements, and each one has stopped a project somewhere. Here’s what to measure before you get attached to a model.

Floor load

This is the one people miss. A float tank is not heavy when it arrives. It’s heavy when it’s full.

The Personal Float Tank weighs 435 pounds dry and 2,400 pounds filled. The Royal Float Room runs 700 pounds dry and 2,400 to 2,600 pounds filled. The Royal Float Pod is 700 pounds dry and 2,600 pounds filled. All three have to sit on a hard, level surface.

Slab on grade, and you’re almost certainly fine. Second floor, wood joists, or a converted retail space above a basement, and you need someone to look at it before the unit ships. That conversation costs nothing in week one and a great deal in week twelve.

Power

All three units want the same thing: 220V, 20 amp, three-wire with ground, GFI protected, on a Hubbell L14-30 receptacle or equivalent.

That’s a dedicated circuit per tank. If you’re planning three rooms, you’re planning three circuits, and the panel in a leased suite frequently doesn’t have the capacity sitting idle. Get an electrician to open the panel and count before you sign the lease, not after.

Humidity and HVAC

This one gets skipped most often and costs the most to fix later. Royal Spa’s site requirements state it plainly for all three units: proper in-room HVAC must be installed to accommodate humidity.

A room holding 175 to 239 gallons of warm salt solution, opened and closed all day, puts moisture into the air continuously. Without dedicated ventilation and dehumidification, that moisture ends up in the drywall, the trim, and eventually the framing. Treat the HVAC as part of the tank budget, because functionally it is.

Doors, ceiling, and drainage

The Royal Float Pod measures 103.5 by 70.5 by 54 inches. The Personal Float Tank is 96 by 60 by 29.5 inches. Measure your narrowest point of entry, including the turn at the end of the hallway, and check the ceiling height where the unit will actually sit rather than at the center of the room.

Then find your drain. You’ll be moving water at some point, and the answer to “where does it go” should exist before delivery day.

One more thing worth knowing: on the Royal Float Room and the Royal Float Pod, the mechanicals can be placed in a different location from the tank itself. That’s a genuine planning advantage in a tight suite, and it’s worth asking about early. Royal Spa asks you to consult a representative on the specifics.

Open room or enclosed pod

This is the design question that shapes your booking calendar more than any other.

Enclosed pods photograph beautifully. They’re also the format that gives first-time clients pause, because a sealed capsule asks a nervous person to commit to something they can’t see out of. Open room-style tanks answer that objection structurally. A client can see the ceiling, sit up whenever they want, and ease into the session at their own pace.

If your business depends on converting curious first-timers into repeat bookings, that’s not a cosmetic difference. If your clientele is already experienced with floating, the calculus changes and an enclosed pod may suit you fine.

The three Royal Spa commercial float tanks

Prices below are as of September 2026. Specifications come from the current product pages.

Personal Float Tank

Built for the home, and honest about it. At $9,100 it’s the entry point into Royal Spa float equipment, with fiberglass construction that has no seams to leak, an ozone and UV purification combination, and an energy efficient pump. It’s the right unit for a practitioner adding a single tank to an existing practice, or for a dedicated home wellness space.

What it doesn’t carry is the remote mechanical placement option the commercial units offer. The listed package covers the tub and mechanicals. Salt, extra filters, maintenance supplies like a skimmer net and hydrometer, and freight are all separate. Budget for those.

Royal Float Room

The open architecture unit, and the one built around the volume problem. It comes in two builds. Standard holds 180 gallons, fits a single treatment suite, draws less water, and heats faster between sessions, which matters when your margin depends on turnover speed.

XL holds 239 gallons and accommodates two guests, including clients over six feet who simply don’t fit comfortably in a standard tank. Royal Spa’s own guidance is that most operators start with a Standard to prove demand and add an XL once the requests show up.

Royal Float Pod

The commercial-scale unit at $17,999, holding 180 gallons with interior dimensions that accommodate users up to 6 feet 4 inches. It runs a 3,000 watt titanium heater to hold water at skin temperature, with dual UV and ozone purification working between sessions and LED lighting plus audio input for guided or ambient sessions. An optional external mechanical configuration simplifies maintenance access when you’re running back-to-back appointments.

What salt does to equipment that wasn’t built for it

Here’s the difference between a residential unit and a commercial one, and it isn’t the badge on the side.

A home hot tub runs a few hours a week. A commercial float tank runs back-to-back sessions ten or more hours a day, six or seven days a week, in water carrying over 800 pounds of dissolved Epsom salt. That’s a chemically aggressive environment running continuously, and it finds every weakness in a shell, a fitting, or a pump seal.

Royal Spa builds the commercial float units from chemical-resistant resin rated for continuous Epsom salt exposure, so surfaces don’t degrade, pit, or discolor under that load. The UV and ozone system turns water over between sessions without staff hand-dosing chemicals every turnover, which is as much a labor question as a water quality one.

Ask any manufacturer you’re considering what their shell and components are rated for under continuous salt saturation. It’s a fair question and the answer is revealing.

Warranty language that survives a paying customer

Read the warranty before you read the brochure.

Plenty of equipment carries coverage that quietly ends the moment you charge someone for a session. Residential warranties are written for residential use, and a float tank running commercial hours is a different machine in the eyes of that document.

Royal Spa’s float tanks carry a 5-year structural warranty, and on the commercial units that coverage extends to the shell, plumbing, and equipment under commercial-use conditions. When you’re comparing quotes, compare that clause specifically. Two warranties with the same number of years can mean very different things.

Five questions to answer before you call

Walk your space with a tape measure and a flashlight, and come to the quote conversation with these in hand:

1. What’s under the floor where the tank will sit, and can it carry 2,600 pounds?
2. Does the panel have room for a dedicated 220V 20 amp circuit per tank?
3. What’s your plan for ventilation and dehumidification in that room?
4. What’s the narrowest doorway, hallway turn, and ceiling height on the path in?
5. Where does the water go when you drain it?

Answer those five and a quote conversation that usually takes three calls takes one.

Common questions

Can I put a commercial float tank on a second floor?

Sometimes, but it needs an engineer’s eyes first. A filled Royal Float Pod is 2,600 pounds concentrated in roughly 50 square feet. That’s a question for someone who can assess your specific structure, not a question to answer from a spec sheet.

How much electrical work should I budget for?

That depends entirely on your panel and the distance from it, so no honest answer exists without a site visit. What you can plan for is the requirement itself: 220V, 20 amp, three-wire with ground, GFI protected, on a Hubbell L14-30 receptacle or equivalent, dedicated per tank.

Do I need special flooring?

The requirement Royal Spa publishes is a hard, level surface, with all work done to local codes and ordinances. Beyond that, most operators choose a floor finish that tolerates standing salt water and is easy to squeegee, because some water leaves the room on people no matter how careful everyone is.

What’s not included in the price?

On the Personal Float Tank, the listed package is the tub and mechanicals. Salt, extra filters, maintenance supplies, and freight are separate. Ask for the same itemization on any unit you’re quoting so you’re comparing complete numbers.

Can the mechanicals go somewhere other than the treatment room?

On the Royal Float Room and the Royal Float Pod, yes. Royal Spa lists remote mechanical placement as an option on both and asks you to consult a representative on the specifics for your layout. It’s one of the more useful flexibilities when you’re fitting a float suite into a building that wasn’t designed for one.

Come see them in person

Float tanks are difficult to evaluate from photographs, and the open room versus enclosed pod question especially so. What feels welcoming in a picture can feel different when you step in.

Royal Spa has been Indiana-made since 1981, and the float tanks are built in the same facility as the hot tubs, swim spas, and baptistries. Come see the units at the showroom, bring your room dimensions, and we’ll walk your floor plan against them together.

Related reading: float tank installation at home, what a first float session is actually like, Epsom salt and float therapy, and the Royal Spa float tank lineup.