Quick Answer: MrSteam is the residential steam-generator brand from Sussman Automatic, a family-owned New York manufacturer with roots back to 1917 and a dedicated home-steam focus since 1963. Its eSeries generators run from a 5kW MS90E (about $2,153, fits rooms up to 71 cubic feet) up to a 24kW MSSUPER5E for the largest installs, with 10-15kW models ($3,483-$5,509 depending on bundle) covering most single-shower conversions. The brand’s real differentiator is building AromaSteam aromatherapy and ChromaSteam lighting straight into its iTempo control system instead of selling them as add-ons — but its lifetime warranty applies only to the MS/eSeries line, not the cheaper Steam@Home tier, which is capped at just 1 year.
MrSteam has shown up on this site as a single row in our best steam sauna decoder — “best feature-per-dollar mid-tier” — and as one of the named brands in our sauna vs. steam room install-cost breakdown, but it never got a dedicated review of its own lineup, pricing, or warranty terms. Two things stood out researching it directly: the company’s history is genuinely older than most sauna brands on this site by a wide margin, and its warranty coverage is real but easy to over-assume across the wrong product tier.
MrSteam eSeries generator lineup at a glance
| Model | Output | Room size | Price (as configured) |
|---|---|---|---|
| MS90E | 5 kW | Up to 71 cu ft | $2,153 (generator only) |
| MS150E | 6 kW | Up to 107 cu ft | Varies by retailer/bundle |
| MS225E | 7.5 kW | Up to 161 cu ft | $2,345 (generator only) |
| MS400E | 9 kW | Up to 257 cu ft | $2,573 (generator only) |
| MSSUPER1E | 10 kW | 339-475 cu ft | $3,483 (w/ iTempo control) |
| MSSUPER2E | 12 kW | 411-575 cu ft | Varies by retailer/bundle |
| MSSUPER3E | 15 kW | Up to 482 cu ft | $5,509 (w/ iTempoPlus + Butler package) |
A larger MSSUPER5E (24kW) tops the lineup for the biggest commercial-adjacent installs, but we couldn’t confirm a reliable room-volume spec for it, so it’s left out of the table rather than guessed at.
1. MS90E — the entry point
MrSteam MS90E Steam Generator (5kW)
- The smallest generator in the residential eSeries lineup — sized for a standard single-person shower stall, not a full steam room.
- Sold as a bare generator at this price point; add an iTempo control, steam head, and AutoFlush separately or step up to a bundled package for those.
- Covered by MrSteam's residential lifetime generator warranty (full parts-and-labor for the first 2 years, parts-only for life after) — not to be confused with the budget Steam@Home line's 1-year term.
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2. MSSUPER1E — the mid-tier standard
MrSteam MSSUPER1E Steam Generator (10kW) with iTempo Control
- Sized for the 96-cubic-foot tiled shower stall that's the most common residential steam conversion, with real headroom for stone or glass-block walls that raise the effective kW requirement.
- Bundled with MrSteam's iTempo control, the entry point into the SteamLinx app ecosystem for remote start and temperature monitoring.
- The $1,492 gap between sale and list price on this model alone shows why getting an itemized quote matters more than trusting a single "MrSteam price" you saw online.
3. MSSUPER3E Butler Package — the design-forward flagship
MrSteam MSSUPER3E (15kW) Butler Package with iTempoPlus
- The Butler packages bundle the generator with a matching Aroma Designer SteamHead, AutoFlush auto-drain, condensation pan, and the upgraded iTempoPlus control — sold across 12 designer finishes rather than one generic plastic panel.
- AromaSteam essential-oil injection and ChromaSteam mood lighting integrate through the same control, not as separate bolt-on boxes — the feature MrSteam leans on hardest against SteamSpa and Amerec.
- At 15kW this covers most stone-walled or larger steam rooms; see our best steam sauna decoder for the sizing math on stone versus tile enclosures.
The Steam@Home warranty trap worth catching before you buy
MrSteam’s own published warranty document draws a real, tiered line that’s easy to miss when a listing just says “lifetime warranty.” The residential MS/eSeries generator — the MS90E through MSSUPER3E models covered above — gets full parts-and-labor in-home service if you file a claim within the first 2 years, then parts-only coverage for life after that. Controls and accessories, including AromaSteam, carry their own separate 2-year warranty.
But MrSteam also sells a cheaper Steam@Home entry series aimed at a lower price point, and that line is covered by a plain 1-year limited warranty — not the lifetime tier at all. If a listing or retailer doesn’t specify which series you’re buying, ask directly before you assume “MrSteam” automatically means lifetime coverage; it depends entirely on which product line is actually in the box.
What’s genuinely different about MrSteam
Sussman Automatic’s steam-equipment history goes back to 1917, when founder Arthur Sussman built one of the first electrostatically-powered industrial steam irons — decades before “home steam shower” was a category at all. The company pivoted toward residential steam bathing in 1963 under president Jay Wilsker, and has run out of the same 65,000-square-foot Long Island City, Queens factory since 1969. That’s a longer continuous operating history in steam equipment specifically than any cabin or heater brand in our best sauna brands roundup, and per MrSteam’s own company history the business remains family-owned rather than absorbed into a larger conglomerate.
The other genuine differentiator is how deeply AromaSteam (essential-oil injection) and ChromaSteam (mood lighting) are wired into the iTempo control itself, rather than sold as separate accessories the way some competitors handle aromatherapy. Combined with AutoFlush automatic tank-draining — standard on eSeries and Butler packages, aimed at reducing mineral-scale buildup between uses — the control ecosystem is doing more work out of the box than a bare generator-plus-timer setup from a budget competitor.
That reputation comes with real trade-offs worth knowing before you commit: user reports on plumbing and bath forums describe occasional circuit-board failures shortly after install and “CO” error-code lockouts, alongside praise for build quality but some frustration with post-purchase customer-support responsiveness. None of that is unique to MrSteam among premium steam-generator brands, but it’s worth budgeting time for a proper warranty claim if you hit an early fault, not just money for the unit itself.
MrSteam vs. the rest of the lineup: which tier fits you
- You want the cheapest way into a genuine MrSteam generator: the MS90E at $2,153 covers a single standard shower stall (up to 71 cu ft) — add controls and a steam head separately.
- You want the standard mid-size residential setup: the MSSUPER1E (10kW, $3,483 with iTempo) is sized for the common 96-cubic-foot tiled shower with room to spare for stone-wall installs.
- You want the full designer package, not just a generator: the MSSUPER3E Butler package ($5,509) bundles AromaSteam-ready steam head, AutoFlush, and iTempoPlus across 12 finishes — the closest thing to a turnkey option in the lineup.
- You’re comparing against SteamSpa or ThermaSol: MrSteam sits mid-to-premium, roughly matching ThermaSol’s price tier and sitting above value-focused SteamSpa, without ThermaSol’s marketed 60-second instant-start claim.
The bottom line
MrSteam earns its reputation on a century-plus of steam-equipment manufacturing and a control ecosystem — iTempo, AromaSteam, ChromaSteam, AutoFlush — that’s more integrated than most competitors’ bolt-on accessories. Pricing runs from $2,153 for a bare 5kW MS90E up to $5,509 for a full 15kW Butler package, with the gap between sale and list price on any given model easily topping $1,000. The one thing to confirm before you buy, not after: which warranty tier actually applies. The MS/eSeries line carries a genuine lifetime parts warranty; the budget Steam@Home series does not, at just 1 year.