The SteamSpa RYT900OB-A is a 9 kW Royal Series steam generator package with dual touch control panels, plus a oil rubbed bronze steamhead and AutoDrain. This SteamSpa 9 kW steam shower generator turns a sealed shower enclosure of about 84 to 140 ft³ into a home steam room, and it suits a household that wants to start the steam from outside the shower and adjust it from inside, with color lighting and a water filter already in the box.
The Royal package has two touch control panels: one inside the steam room and one outside, so you can start the generator from outside and adjust the steam from inside the room. SteamSpa's QuickStart technology brings steam in about 1 to 2 minutes, and the dual-tank design keeps it flowing without interruption. Either panel sets the steam time from 1 to 60 minutes and stores two favorite settings as SET1 and SET2, and the panels keep a real-time clock and switch between °F and °C. When the room reaches your temperature, the steam stops.
Sized for 84 to 140 ft³ Showers
SteamSpa's sizing chart lists 9 kW for cabins from 3' x 4' x 7' (84 ft³) through 3' x 5' x 7' (105 ft³), 4' x 4' x 7' (112 ft³) and 3' x 6' x 7' (126 ft³) up to 4' x 5' x 7' (140 ft³). SteamSpa adds that it is safe, and even recommended, to choose one size step above what the chart shows. At 9 kW the generator suits a mid-size walk-in shower or a shower with a bench, and because the steam is produced outside the enclosure, the shower itself only needs its steamhead, a control and a properly sealed enclosure.
Chromatherapy Light and Water Filter
A multi-mode LED chromatherapy light sits in the ceiling of the steam room and adds color to the session, and steam enters through a oil rubbed bronze steamhead that releases scent into the mist, and the box includes aroma oil. An inline water filter is included too: it sits on the water supply and traps rust, sediment and scale-forming minerals before they reach the tank, which protects the heating elements and is something SteamSpa requires on every installation. SteamSpa recommends pairing this package with its SSD-STMKIT Complete Essentials Installation Kit, which gathers a solid brass pressure reducing valve with gauge, a water shut-off valve, a 20" steel flex hose, the unions that form a quick release system and 90 degree elbows for the steam line.
Relief Valve and AutoDrain
On this -A model, AutoDrain opens 30 minutes after the steam shuts off and drains the tank for about 7 minutes, which limits mineral buildup between uses. The generator measures 15.75" W x 6.30" D x 14.57" H and holds 160 in³ of water, building steam at 4 psi, and a pressure relief valve opens automatically if the tank pressure ever passes 15 psi. The generator has a hanging groove for wall mounting and must be installed level, so its water level sensor reads correctly.
Power, Plumbing and Placement
Plan the power and plumbing before the walls close. At 9 kW the generator draws 38A at 240V single phase on 8 AWG copper wire, with its own breaker and a power disconnect within sight of the unit, and it can sit in a closet behind the shower, a vanity cabinet, the attic or the basement, as long as it stays indoors, dry, protected from freezing and less than 25' from the steam room.
With about 84 to 140 ft³ of steam room in reach and a oil rubbed bronze steamhead in the shower, the SteamSpa RYT900OB-A gives you a complete 9 kW steam shower package from one brand, ready for a licensed electrician and plumber to install.
Features
9 kW for 84 to 140 ft³
SteamSpa's sizing chart matches 9 kW to a mid-size walk-in shower or a shower with a bench of about 84 to 140 ft³, so the generator is matched to the room's volume; SteamSpa says choosing one size up is safe and even recommended.
Dual Touch Control Panels
One panel inside the steam room and one outside let you start the steam before you step in and adjust it once you are seated, with two saved settings.
QuickStart Steam
SteamSpa's QuickStart technology brings steam in about 1 to 2 minutes, and the dual-tank design keeps it flowing continuously, so a session starts with little waiting.
Oil Rubbed Bronze Steamhead
Steam enters through a oil rubbed bronze steamhead; tighten it by hand, mount it about 12" above the floor with the outlet pointing down, away from the bench.
AutoDrain Included
On this -A model, AutoDrain empties the generator tank on its own after each session, which limits mineral buildup and saves you a maintenance step.
Automatic Pressure Relief
A pressure relief valve comes in the package and opens automatically when tank pressure passes 15 psi, an added layer of protection for the generator and the home.
Inline Water Filter Included
The included inline filter traps rust, sediment and scale-forming minerals on the supply line, protecting the tank and elements, and SteamSpa requires one on every install.
Chromatherapy Lighting
A multi-mode LED chromatherapy light mounts in the ceiling of the steam room and adds soft color to each session, and switches on and off from the control panel.
Standard 38A, 240V Circuit
At 9 kW the generator runs on a dedicated 38A, 240V single-phase circuit with 8 AWG copper wire, its own breaker and a power disconnect within sight of the unit.
Whisper-Quiet Operation
The Royal generator is engineered for low-noise output, so the generator in the closet, attic or vanity stays in the background while the steam room fills.
Specifications
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Model: RYT900OB-A
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Power: 9 kW
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Electrical: 240V single phase, 38A, 8 AWG wire, dedicated breaker
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Recommended Room Size: 84 to 140 ft³ (SteamSpa sizing chart)
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Steam Outlets: 1
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Steam Pressure: 4 psi
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Tank Water Volume: 160 in³
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Steam Time: 1 to 60 minutes
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Water Supply: 1/2" copper or brass, hot or cold, 15 to 20 psi
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Steam Line: 3/4" copper or brass, no valves
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Drain Line: 1/2", gravity drain
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Pressure Relief Valve: 3/4", opens above 15 psi
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Inlet Water Temperature: 160°F maximum
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Steamhead Finish: Oil Rubbed Bronze
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Steamheads: 1
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Control: Dual touch control panels (inside and outside the steam room)
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AutoDrain: Included
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Lighting: Multi-mode LED chromatherapy light
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Water Filter: Included
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Generator Dimensions: 15.75" W x 6.30" D x 14.57" H (body)
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Steam-Up Time: About 1 to 2 minutes (manual)
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Generator Location: Indoors only, outside the steam room
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Installation: Licensed electrician and plumber; inline water filter included
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Warranty: Generator: limited lifetime; controls and accessories: 1 year
What's Included
- Royal Series 9 kW steam generator with integrated AutoDrain
- Dual touch control panels
- Steamhead, oil rubbed bronze
- LED chromatherapy light
- Inline water filter
- Pressure relief valve
- Drain pan
- Aroma oil
Sold separately: Pressure reducing valve and quick connect and release fittings (SteamSpa SSD-STMKIT installation kit), 3/4" steam pipe, 1/2" water supply and drain piping, 240V wiring and breaker
Installation & Care
Installation
Electrical: 9 kW at 240V single phase draws 38A; run 8 AWG insulated copper wire rated 194°F and 300V on its own breaker, with a power disconnect within sight of the generator and a proper ground. Plumbing: a 1/2" hot or cold supply at 15 to 20 psi through a pressure reducing valve, the inline filter and a quick connect and release fitting, in copper or brass only (no PEX or PVC), with inlet water no hotter than 160°F. Run 3/4" copper or brass steam pipe with curved elbows, sloped so condensation drains back, with no valves and no dips, insulated where it can be touched, and keep it off any wall material not rated to 240°F. Mount the steamhead about 12" above the floor, outlet down and away from any bench, keep the temperature sensor or control off the steamhead wall, seal every pipe and fitting with 100% silicone caulk, and add an exhaust fan outside the steam room. Leave 12" of clearance on both sides and the top of the generator. SteamSpa requires a licensed electrician and a licensed plumber, and the installation manual is in Resources.
Care
Let the AutoDrain finish before you switch off the breaker, so the tank is empty. Replace the inline filter cartridge at least every 6 months, clean the water supply pipes once a year, and have the generator, steamhead, pipes and fittings checked for leaks every year. About every six months, a technician can remove the cover and clean scale off the water level sensor prong. Wipe the steamhead with soapy water and a soft sponge, never with harsh chemicals or abrasive tools. Children under 16 should not use the steam room, and because SteamSpa generators are not boilers, check with your local inspector before any commercial use.
Resources
Shipping, Returns & Warranty
SteamSpa ships this item from the SW Corp warehouse by UPS, FedEx or USPS, usually within 1 to 2 business days of your order. Shipping is free within the lower 48 states on orders of $101 or more (orders under $101 ship for a flat $15); for Alaska or Hawaii, contact us before you order. You'll get tracking by email as soon as it ships.
Inspect the packaging and the product before you sign. Note any damage or shortage on the delivery receipt, then email photos to support@mycleansupplies.com within 48 hours of delivery so the freight claim can be filed. Damage reported after 48 hours can't be claimed.
Unused SteamSpa products in their original packaging can be returned within 21 days of delivery. Ask us for a return authorization before you ship. You pay the return shipping, which for a freight item means the freight cost, and a 20% restocking fee is deducted along with payment processing fees. Installed, used or damaged products and special-order items can't be returned.
SteamSpa warrants the steam generator against defects in materials and workmanship for its lifetime and repairs or replaces it at its option; the controls, steamhead and other accessories are covered for one year from purchase. Register the generator at steamspa.com/register within 90 days of delivery. The warranty requires installation by a licensed professional, an inline water filter whose cartridge is replaced at least every 6 months, and a quick connect and release fitting for maintenance. It covers residential use only, and surface damage must be reported within 5 days of delivery.
Warranty claims. Call SteamSpa at 1-866-588-8008 or email info@steamspa.com with your proof of purchase and the model number. Register the generator at steamspa.com/register within 90 days of delivery, or the warranty is not active. Contact us with your order number if you would like help with the claim.
About SteamSpa
SteamSpa makes residential steam shower generators, wireless and touch controls, steamheads and steam room accessories. It is part of SW Corp in Miami, Florida, the company behind ANZZI and MediTub.
The Royal Series packages pair a SteamSpa generator from 4.5 kW to 12 kW with dual touch control panels, an LED chromatherapy light, an inline water filter and round steamheads in matte black, gold, brushed nickel, polished chrome or oil rubbed bronze; the 10.5 kW and 12 kW sizes carry two steamheads, and every size comes with or without AutoDrain (the -A models add it). The RYTS packages use square steamheads. SteamSpa recommends the SSD-STMKIT Complete Essentials Installation Kit, sold separately.
