Steamist SM Plus SMP-7 Steam Shower Generator
Steam
$2,600

Steamist (Delta SteamScape)

Steamist SM Plus SMP-7 Steam Shower Generator

★4.5from 150 reviews across retail listings

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.

Price
$2,600
Heater
7.5kW
Best For
Remodelers comparing against Mr.Steam who value steadier temperature control.

Specifications

Heater
7.5kW residential steam generator, stainless tank
Heater Power
7.5kW
Dimensions
Compact generator (remote mount); sized for mid-size tiled enclosures
Type
Steam
Install
Licensed plumber + electrician: 240V circuit, water and steam lines into a vapor-sealed tiled enclosure; TotalSense controls extra
Warranty
Limited residential warranty; stainless tank carries the longest coverage
Model
SM Plus SMP-7 (7.5kW)

Highlights

SteadySteam temperature holdingStainless tank longevityNow under Delta's wing

Pros

  • ✓SteadySteam modulation holds temperature smoother than rivals' cycling
  • ✓Stainless tank with the brand's longest warranty coverage
  • ✓Uses under a gallon of water per 20-minute session
  • ✓7.5kW handles larger enclosures than entry 5kW units
  • ✓Delta acquisition secures long-term parts availability

Cons

  • ✗Enclosure construction dwarfs the generator price
  • ✗TotalSense controls are a required separate purchase
  • ✗Scale management is mandatory in hard-water regions
  • ✗Steam ≠ sauna; expectations must be set accordingly

Common Questions

Why pick the Steamist over the equivalent Mr.Steam?
Temperature behavior, mainly: SteadySteam modulates output to hold the enclosure steady where rival generators cycle on and off, and the stainless tank carries the brand's longest warranty coverage. At 7.5kW it also handles larger enclosures than the entry 5kW units either brand sells.
Why do I see this sold under Delta 'SteamScape' branding?
Delta acquired Steamist, so identical hardware now appears under both names — check listings for both when price shopping, because they do not always match. The acquisition is quietly good news for buyers, since Delta's scale secures long-term parts availability.
Are the controls included?
No — the TotalSense control package is a required separate purchase, and the generator does nothing without it. Make sure any quote you compare includes the control, steam head, and options like autoflush, or the $2,600 figure will grow on you.
How much water does a steam session use?
Under a gallon for a 20-minute session, which surprises people — the generator boils a small tank rather than running the shower. The ongoing obligation is scale management instead: in hard-water regions, regular flushing and descaling are mandatory to keep the tank and elements healthy.
What kind of shower can accept this generator?
The same as any residential steam unit: a fully tiled, vapor-sealed enclosure with a licensed plumber and electrician running the 240V circuit, water feed, and steam line. The enclosure construction, not the generator, is where most of the project budget goes.

Compare the Steamist SM Plus SMP-7 Steam Shower Generator

Mr.Steam eSeries MS90EC1 Steam Shower Generator
$1,799
Steam

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.

The name in home steam5kW residential workhorsePackages with aroma/auto-flush
5kW heater
Best for: Bathroom remodelers who want daily steam showers, not a Finnish sauna.
Specs, install & tradeoffs
Maxxus Trinity 3-Person Corner Infrared Sauna
$2,699
Infrared
4.4(250)

The Trinity is Golden Designs' clever-footprint play: a corner-format three-seater at $2,699 (list $3,833) that tucks into the dead angle of a garage gym or basement where rectangular cabins won't fit. The 'Dual Tech' pitch mixes seven ceramic and carbon emitters — ceramic runs hotter and more focused, carbon spreads gentler warmth — plus a floor reflexology heater, red-light chromotherapy, and Bluetooth. Owners report it as a meaningful step up in heat intensity from all-carbon budget boxes. The same house caveats as its Dynamic siblings apply: 'low-EMF' is the marketing tier below the brand's own 'Near Zero' models (which quote under 3 mG only when measured inches from panels), warranty terms shift by retailer, and the hemlock paneling is budget-grade. r/Sauna's take on the whole Golden Designs catalog: functional sweat boxes, priced honestly, marketed optimistically.

Corner footprint saves spaceCeramic + carbon dual heatFloor reflexology heater
3-personLow-EMF claimed
Best for: Space-constrained basements and garage gyms needing a three-person IR box in a corner.
Specs, install & tradeoffs
Harvia Cilindro PC90E 9kW Heater Package
$3,084
Traditional Indoor

The Cilindro is the heater r/Sauna upgrades to when they stop asking 'which sauna should I buy' and start asking 'how do I get better steam.' The open-grate pillar holds roughly 200 pounds of stone — triple a wall heater — so you can ladle water down the sides for soft, rolling steam or on top for a sharp blast. This $3,084 package from a US Harvia dealer bundles the PC90E, WiFi Xenio controller, and the full stone load, which matters because buying stones separately surprises people. Owners' honest notes: 200 lb of stones means a real floor and a patient first heat-up (the mass takes longer than a KIP), the MyHarvia app occasionally drops offline, and you need genuine 280+ cubic feet — in a small room it's overkill that short-cycles.

~200 lb stone mass for serious steamWiFi Xenio controller includedThe r/Sauna 'endgame' upgrade heater
9kW heater
Best for: Builders of mid-size to large home saunas who care more about steam quality than anything else.
Specs, install & tradeoffs
Dynamic Barcelona 1-2 Person Low EMF Infrared Sauna
$1,899
Infrared

The Barcelona is America's default budget infrared — the Costco-and-Amazon staple at $1,899 (frequently less on promotion) that has introduced more households to home heat therapy than any premium brand. Canadian hemlock panels click together in an afternoon, it plugs into a normal wall outlet, and it does what owners want: 20-minute sweats with Bluetooth playing. Now the honest part the listings gloss: retailer specs admit the standard model's 'low-EMF' means 5-10 mG measured a few inches from the panels — an order of magnitude above Clearlight's sub-1 mG — and the $2,299 'Elite' exists precisely to fix that. Max temps hover around 140°F, walls are thin, and r/Sauna's verdict is a shrug: 'it's a warm box, and for $1,900 that's fine.' As a first step into IR with modest expectations, it earns its 900+ reviews.

The budget IR benchmarkPlugs into any wall outletAfternoon assembly
2-personLow-EMF claimed
Best for: Budget-first buyers who want a functional daily sweat box without electrical work or premium claims.
Specs, install & tradeoffs
SweatTent Wood-Fired Sauna Tent
$1,499
Portable/Blanket

The SweatTent is the budget option r/Sauna actually respects, because it cheats none of the physics: a $1,499 pop-up tent with a real wood-burning stove and stones on top, hitting a legitimate 200°F with water-on-rocks löyly — hotter than any infrared cabin at any price. The 300°F-rated Oxford nylon shell sets up in under ten minutes, needs zero electrical work, and travels to campsites. Reviewers call it the best sub-$2,000 sauna experience sold. The honest running costs and quirks: firewood (SweatTent's own bundles run $50 for 4-6 sessions), 20-30 minutes of stove-tending before it's hot, condensation dripping from the ceiling in cold weather, and a fabric shell that is ultimately consumable — years, not decades. No HOA will mistake it for landscaping. As a first real sauna or a cabin-property rig, it's the community's default budget answer.

Real 200°F wood-fired löylyNo electrical work everTen-minute setup, portable
3-person200°F max
Best for: Backyard and cabin owners who want genuine Finnish-grade heat at a tent price.
Specs, install & tradeoffs
Amerec Designer B 8kW Sauna Heater
$1,400
Traditional Indoor

Amerec is the American commercial-sauna stalwart — the heaters in a thousand gym saunas — and the Designer B is its residential wall unit, running about $1,400 street for the 8kW with built-in vulcanite rocks and mechanical controls. Like the Harvia KIP, this is a heater for people building their own room, and r/Sauna treats the two as interchangeable answers: buy whichever is cheaper the week you're shopping. Owners like the commercial-duty elements and the dead-simple time/temp knobs; the practical knocks are the same as every wall heater — modest stone capacity means sharper, shorter steam than a pillar heater, and the included vulcanite rocks are serviceable but many owners swap in proper olivine stones. US-based parts and support is a quiet advantage when an element dies in year six and you want a replacement without importing anything.

Commercial-pedigree US brandBuilt-in mechanical controlsStraightforward DIY-room pairing
8kW heater
Best for: DIY room builders who want a proven American heater with easy domestic parts availability.
Specs, install & tradeoffs