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Request a return within 30 days of delivery. Approved change-of-mind returns carry a 15% restocking fee. Damage is made right. Return policy
Description
The Mr. Steam SpaH2O is a thermostatic, pressure-balancing electronic shower valve with a built-in mixer CPU. It is run from the iSteamX control, so one touchscreen handles both your steam and your shower water, with no separate shower trim needed. It suits homeowners building a full Mr. Steam spa shower around an iSteamX.
Specifications (Mr. Steam)
- Model: SPAH2O
- Outlets: 3 (up to 2 open at a time)
- Control: operated by the Mr. Steam iSteamX control (sold separately)
- Water connections: 1/2 in. NPT
- Flow rate at 45 psi, mixed water: single outlet 1.1 to 5.5 gpm; two outlets 1.1 to 7.4 gpm total
- Dynamic pressure: 20 psi minimum, 73 psi maximum, 43 psi recommended
- Hot water input: 110 to 149 F; mixed water maximum 118 F
- Electrical: 12V DC, maximum load 36 W (1 W standby)
- Ingress protection: IP54
- Dimensions: 11 x 2.5 x 9.5 in.
- Weight: 4.5 lb
- Maintenance functions: thermal disinfection, hygiene flushing and self-cleaning
- Features: up to 3 custom user sequences, warm-up and eco modes, pause and resume, auto shutoff and anti-scald regulation, maintenance alarms
- Standards listed by Mr. Steam: ASSE 1016 performance requirements for automatic compensating valves
What you need to know before buying
- The iSteamX control is required and sold separately. The SpaH2O does not work on its own.
- Install by a licensed plumber, with electrical connections by a licensed electrician.
- Mr. Steam says to use shower fixtures marked for use with automatic compensating valves rated at 2.2 gpm or higher.
- Only 2 of the 3 outlets can run at the same time.
Warranty
Mr. Steam 2-year limited warranty on controls and components.
Returns
Returns accepted within 30 days of delivery for unused, uninstalled items in original sealed packaging. Return shipping is paid by the buyer, and a restocking fee of up to 15% may apply (up to 50% if packaging is missing or the seal is broken). Installed items are handled as manufacturer warranty claims.
Related
Mr. Steam generators and packages, Steam shower generators
Install per the manufacturer's instructions by a licensed plumber and electrician.
Specifications
| Model | SPAH2O |
|---|---|
| Outlets | 3 (up to 2 open at once) |
| Control | Mr. Steam iSteamX (sold separately) |
| Water connections | 1/2 in. NPT |
| Flow, 1 outlet | 1.1 to 5.5 gpm |
| Flow, 2 outlets | 1.1 to 7.4 gpm total |
| Dynamic pressure | 20 to 73 psi (43 psi recommended) |
| Mixed water max | 118 F |
| Electrical | 12V DC, 36 W max |
| Ingress protection | IP54 |
| Dimensions | 11 x 2.5 x 9.5 in. |
| Weight | 4.5 lb |
Specifications from the manufacturer. Dimensions are approximate.
Shipping
We ship to the 48 contiguous U.S. states and Washington, DC. Your shipping cost is calculated at checkout and shown before you pay.
You will get an order confirmation right away and tracking by email when your order ships. Questions about timing for a specific item? Call (945) 280-3243 or email support@restoresuite.com before you order.
Delivery
Large items such as saunas, hot tubs and cold plunge tubs usually ship by freight. The carrier contacts you to schedule delivery. Please check the packaging and note any damage on the delivery receipt before you sign, then tell us within 48 hours so we can resolve it for you.
Before delivery day, measure doorways and hallways along the path to the install spot, and confirm the electrical requirement on the Specifications tab.
Warranty
Mr. Steam 2-year limited warranty on controls and components.
Warranty coverage for this product is shown above or in the description. If anything arrives damaged or stops working, contact us with your order number and we will help you get it resolved.
Reviews
What delivery looks like


Why this one
Run your shower water and your steam from one iSteamX touchscreen with this 3-outlet thermostatic electronic valve.
- Thermostatic, pressure-balancing electronic valve
- 3 outlets, up to 2 running at once
- Controlled from the iSteamX touchscreen
- Built-in thermal disinfection and self-cleaning

Key specs at a glance
The numbers to check before you order. Full details are on the Specifications tab.
- Electrical
- 12V DC, 36 W max
- Dimensions
- 11 x 2.5 x 9.5 in.
- Weight
- 4.5 lb
Before you buy: what to know
Based on the manufacturer's specs, manuals and our research.
- Requires the Mr. Steam iSteamX control, sold separately.
- Use fixtures rated for automatic compensating valves at 2.2 gpm or higher.
- Plan for a licensed plumber and electrician.
Not sure this is the right fit? Ask us or call (945) 280-3243.
Common questions
Do I need an iSteamX control?
How many shower fixtures can it run?
What water pressure does it need?
Who should install it?
Choosing the right setup can be tricky. We are here to help.
Tell us your space, power and how you plan to use it, and we will help you compare models honestly, including whether this one is the right fit.
Why buy from Restore Suite
Warranty terms up front
Each product page states its warranty coverage, and we help you use it if anything goes wrong.
Terms shown upfront
Shipping, delivery, warranty and return terms for each brand are on the product page before you buy, not buried at checkout.
One point of contact
We handle your questions, delivery issues and warranty claims with the manufacturer for you.
Honest guidance
Free guides and calculators for sizing, running costs and safety, so you can decide with real numbers. See the research
