
Mr.Steam
Mr.Steam eSeries MS90EC1 Steam Shower Generator
Cross-shoppers land here after realizing their dream isn't dry 195°F air but a 115°F fog you can barely see through — a steam shower, and Mr.Steam is the name-brand way to build one. The eSeries MS90EC1 is the residential workhorse: 5kW, sized for tiled enclosures up to 71 adjusted cubic feet, about $1,799 at big-box retail for the generator. The critical education, which r/Sauna delivers bluntly in every crossover thread: steam and sauna are different animals (100% humidity at ~110-120°F versus dry 180-200°F), and the generator is the cheap part — a properly vapor-sealed, sloped-ceiling tiled enclosure plus plumbing and electrical routinely runs $5,000-$15,000 in renovation. Owners of finished installs love them daily; the horror stories are all botched enclosures, not failed generators. Buy controls, AromaSteam head, and AutoFlush as a package; à la carte pricing stings.
Specifications
Highlights
Pros
- ✓Category-defining brand with deep parts and dealer support
- ✓Right-sized 5kW for typical residential shower conversions
- ✓Package options add aromatherapy, autoflush, and app controls
- ✓Compact generator hides in a vanity or closet nearby
- ✓Steam at 110-120°F suits people who find saunas punishing
Cons
- ✗Generator is a fraction of true cost — enclosures run $5,000-$15,000
- ✗Requires plumber, electrician, and a vapor-sealed tiled shower
- ✗Controls and steam head cost extra unless bundled
- ✗Hard water demands flush discipline or scale kills it
- ✗It is not a sauna, and cross-shoppers must internalize that
Common Questions
Is $1,799 the real cost of a steam shower?
What does installation require?
How do I keep hard water from killing it?
How do I know if 5kW is enough for my shower?
How different is steam from a sauna, really?
Compare the Mr.Steam eSeries MS90EC1 Steam Shower Generator
Related saunas
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Steamist is the other legacy American steam name — now also sold under Delta's SteamScape branding after acquisition, a detail worth knowing when comparing listings — and the SM Plus SMP-7 is its 7.5kW mid-size generator at about $2,600. The engineering pitch is SteadySteam, which modulates output to hold your set temperature instead of the blast-and-coast cycling cheaper generators do, plus a stainless tank and a sub-gallon water draw per 20-minute session. Plumbers and owners rate the brand's reliability alongside Mr.Steam, with the choice often coming down to which controls ecosystem (TotalSense vs. iSteam) and which dealer you like. All the steam-category realities apply: the enclosure build is the real project and the real budget, hard water is the enemy, and r/Sauna will remind you — accurately — that a steam shower is a different pleasure than sauna, not a substitute.
Golden Designs (Dynamic)
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SweatTent
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Golden Designs (Maxxus)
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