Key takeaways
- Prefer a wall control that operates without the phone.
- Check whether presets remain available during an internet outage.
- Confirm compatibility with your preferred voice platform rather than assuming every assistant works.
- Review permissions, cloud dependence, and whether remote start is disabled by default.
- Use a spoken temperature command carefully; a physical temperature limit is still essential.
The best smart shower systems for personalized showers are the Moen Smart Shower for broad app and voice compatibility, Kohler DTV+ for a premium multi-outlet installation, and Hai Smart Shower for retrofit-friendly control with less disruption to an existing bathroom.
Our top picks
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Best smart shower systems at a glance
| System or type | Best for | Control method | Installation profile | Typical water and power requirements |
|---|---|---|---|---|
| Moen Smart Shower | Households wanting schedules, presets, and voice control | Digital controller, smartphone app, compatible voice assistants | Usually requires a compatible digital valve and access to plumbing | Commonly 1.75–2.5 gpm; 120V GFCI-protected power for the valve system |
| Kohler DTV+ | Luxury showers with several outlets and zones | Digital interface, app-dependent features, compatible voice control | Most complex; best during a remodel or new construction | Often 2–4 outlets; 3/4-inch supply plumbing is commonly recommended |
| Hai Smart Shower | Modernizing a shower without rebuilding every wall | Wall controller and smartphone app | Retrofit difficulty varies by valve and existing wiring | Typically limited by the showerhead’s rated flow, commonly 1.75–2.5 gpm |
| Smart shower controller retrofit | Renters or budget-conscious buyers | Digital control, sometimes app control | Lowest disruption, but fewer independent outlets and automation features | Usually works within the existing valve and showerhead’s flow rating |
These figures are planning ranges rather than guarantees. Exact flow, voltage, valve dimensions, outlet count, and app features depend on the specific kit and regional version.
Our picks by bathroom situation
Best overall: Moen Smart Shower
Moen Smart Shower is the most balanced choice for a family bathroom. Its main advantage is personalization: users can save preferred temperature and outlet combinations, start a shower from a controller, and use the Moen app for additional settings. Compatible voice-assistant control can be useful when your hands are wet, although voice commands should be treated as a convenience rather than the primary safety control.
Choose it when two or more people regularly use the same shower and want different presets. It is also a sensible choice if you already use other Moen products or want a recognizable support and replacement-parts ecosystem.
The trade-off is installation. A digital valve normally replaces or supplements the conventional thermostatic valve, and the valve must be installed in an accessible location. If the shower wall is finished, access may require opening an adjacent closet or removing tile. Confirm the exact valve, controller, trim, and outlet package before buying; a controller alone is not a complete smart shower.
Best for a luxury multi-outlet shower: Kohler DTV+
Kohler DTV+ is aimed at showers with multiple outlets such as an overhead rainhead, hand shower, body sprays, and a steam or lighting integration. Its strength is coordinated control: you can select outlets, adjust temperature, and create a more repeatable shower sequence from a digital interface.
This is the best choice when the bathroom is already being remodeled and the walls are open. It is less attractive as a simple replacement for a single showerhead because the valve, power, plumbing, and outlet planning can quickly exceed the value of the existing enclosure.
Before specifying DTV+, calculate the combined flow of every outlet. Four outlets rated at 2.0 gpm would demand up to 8.0 gallons per minute if used simultaneously, before accounting for pressure loss. Many homes cannot deliver that flow comfortably, so a staged program or fewer active outlets may be necessary.
Best for a less disruptive upgrade: Hai Smart Shower
Hai Smart Shower suits homeowners who want digital temperature control and app-based personalization without committing to a full luxury shower remodel. It can be a particularly good fit when the bathroom has a conventional layout and the buyer wants a cleaner wall control plus more predictable operation.
Its compatibility depends heavily on the existing plumbing and the selected installation configuration. Ask whether the kit requires a new digital mixing valve, dedicated electrical work, access behind the wall, or a particular type of showerhead. A retrofit label does not always mean “no wall access.”
What matters more than the app
Temperature accuracy
Look for a digital valve that measures temperature at the mixing point and has a physical temperature limit. A system that displays 100°F but delivers a fluctuating stream is not meaningfully smarter than a good thermostatic valve.
For most households, a useful target is temperature control within roughly 1–2°F after the system stabilizes. Ask the manufacturer how accuracy is defined, whether the sensor is at the valve or outlet, and how long the system takes to reach the selected temperature. A “warm-up” feature may save water by diverting cool water until the target temperature is reached, but it cannot eliminate the water used by the plumbing run.
App and voice controls
Apps are most valuable for saving profiles, scheduling warm-up times, updating firmware, and controlling several outlets. They are less valuable if every basic shower requires a phone, account, or internet connection.
- Prefer a wall control that operates without the phone.
- Check whether presets remain available during an internet outage.
- Confirm compatibility with your preferred voice platform rather than assuming every assistant works.
- Review permissions, cloud dependence, and whether remote start is disabled by default.
- Use a spoken temperature command carefully; a physical temperature limit is still essential.
Water-saving settings
Smart controls can reduce waste through timed showers, pause modes, warm-up alerts, and outlet scheduling. They do not automatically make a high-flow shower efficient. Flow rate remains the largest variable.
Here is a simple estimate: a 10-minute shower at 2.0 gpm uses 20 gallons. Reducing the time to 8 minutes uses 16 gallons, saving 4 gallons per shower. For a household taking 20 showers per week, that is approximately 4,160 gallons per year. A pause function may save additional water, but only if users actually activate it.
Check the printed flow rating on each showerhead. In the United States, many efficient showerheads are rated around 1.75–2.0 gpm, while some larger or multi-outlet designs can use 2.5 gpm or more per active outlet.
Valve requirements and bathroom compatibility
The valve is the part most likely to determine whether a smart shower is a simple upgrade or a construction project. Digital valves generally need:
- A suitable hot and cold water supply, often with 1/2-inch or 3/4-inch connections depending on the system.
- Enough household water pressure and flow for the number of active outlets.
- A serviceable location behind an access panel, adjacent closet, or unfinished wall.
- Electrical power, commonly a 120V GFCI-protected circuit or an approved low-voltage power arrangement.
- Correct orientation and check valves to prevent cross-flow between hot and cold supplies.
Existing bathrooms are easiest to adapt when the valve is accessible from the back, the shower has one main outlet, and the controller can use an existing wall route. They are hardest when the valve is buried in a tiled wall, the home has weak pressure, or several outlets must be added.
Installation difficulty: a practical decision guide
| Your situation | Recommended direction | Expected difficulty | Why |
|---|---|---|---|
| Apartment or rental | Non-invasive digital controller or smart showerhead | Low to moderate | Avoids changing concealed plumbing and permanent electrical work |
| Existing single-outlet shower with rear access | Moen Smart Shower, Hai, or similar retrofit-oriented system | Moderate | Valve replacement and controller wiring are more accessible |
| Bathroom renovation with walls open | Moen Smart Shower or Kohler DTV+ | Moderate to high | Best opportunity to run power, data, and new outlet plumbing |
| Four or more outlets | Kohler DTV+ or another multi-outlet digital valve system | High | Requires flow calculation, larger supplies, zoning, and careful waterproofing |
Have a licensed plumber handle concealed water connections and a qualified electrician handle line-voltage work. Follow local electrical rules, especially around GFCI protection and the location of power supplies near wet areas.
Ownership realities and common mistakes
The first parts to cause trouble are usually not the app. Mineral scale can affect outlet screens, thermostatic cartridges, solenoids, and temperature sensors. Clean removable screens according to the manufacturer’s instructions, and do not use harsh chemicals on plated trim or electronic controls. If your water is hard, a whole-house or point-of-use treatment plan may reduce maintenance, but it will not replace routine cleaning.
Keep the valve and power supply accessible. Do not bury a serviceable digital valve permanently behind tile just to achieve a cleaner appearance. Also avoid installing a multi-outlet system without checking the home’s pressure under load; a shower can feel weak when several outlets share a supply even if the static pressure appears acceptable.
Finally, compare the complete installed cost rather than the controller price. Include the digital valve, trim, outlets, power supply, access panel, plumbing changes, electrical work, waterproofing, and possible tile repair. For an existing bathroom, a conventional thermostatic valve plus a timed controller may deliver most of the practical benefit at a lower cost and with fewer failure points.
Bottom line
Choose Moen Smart Shower for the strongest all-round combination of presets, app control, and household usability. Choose Kohler DTV+ when you are designing a premium multi-outlet shower from the plumbing outward. Choose Hai Smart Shower or a retrofit-oriented controller when preserving the existing bathroom matters most. In every case, verify valve access, electrical requirements, available flow, offline operation, and replacement support before ordering.
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