Steam shower generators produce the hot vapor transforming ordinary bathroom stalls into rejuvenating at-home spa experiences. This guide explains steam generator types, key specifications, installation and costs to simplify equipping custom showers or steam rooms with soothing mist functionality.

What is a Steam Shower Generator?

A steam generator represents the engine producing moist warmth infusing steam into shower enclosures after taping into existing plumbing and electrical connections. The self-contained units include:

  • Electric heating elements
  • Water reservoir + pump
  • Temperature & timing controls
  • Steam outlet nozzle

Inside the generator’s outer metal casing, an internal tank holds water continuously heated to around 140° Fahrenheit. Sensors notice when showeractivates, pumping hot liquid over heating coils flashing water into hypoallergenic steam vapor.

This moist air then routes through insulated tubing into the shower area via steam outlet heads mounted high on walls. Controls allow customizing session durations and steam temperature intensity.

Quality generators cycle on/off automatically maintaining steam levels for 15-60 minutes without risks of sputtering out mid-session. This ensures reliably enveloping users in therapeutic humid warmth each use. Know more about luxuriest sauna steam room installation company Dubai.

Top 5 Steam Generator Benefits

Beyond the obvious comforts of fog-free mirror shower shaving, steam generators boost health further by:

1. Unclogging Sinus & Lung Congestion – Ultra fine mist deeply penetrates nasal, bronchial and lung passages naturally clearing environmental allergens and bacteria invaders. This allows easier freer breathing.

2. Hydrating Skin & Hair – Surrounding skin surface cells in constant 98% humidity atmosphere maximizes absorption of moisture and nutrients. This plumps up wrinkles while combating dryness and itching.

3. Easing Sore Muscles – The penetrating humid warmth relaxes tense muscle tissues and swollen joints by boosting circulation of oxygenated blood to speed recovery.

4. Flushing Out Toxins – Sweating profusely prompted by steamy conditions opens pores allowing excretion of trapped chemicals from lotions, makeups and pollution. This cleanses skin naturally.

5. Destressing Your Mind – The meditative womb-like isolation from external worries cocooned inside white noise harmony provides instant anxiety relief. Peaceful bliss ensues.

Beyond basic cleanliness, steam generator systems amplify showers into multifunction wellness pods combating common health complaints.

Steam Generator Types

Manufacturers offer electric steam generator models spanning residential to commercial applications and spaces. Units breakdown into two main configurations.

Tankless Steam Generators

As the name implies, tankless generators lack an internal hot water storage tank. Instead, heating elements instantly flash chill inlet water to steam using high watt densitity. Limited internal space allows packing into small enclosures.

However, the instantaneous heating demands very high energy operating costs with higher risk of mineral scale fouling coils. Still, tankless compactness appeals for tight retrofits.

Tank Steam Generators

The majority of home steam generators utilize integrated water tank architecture allowing gradual mineral-free steam production while enabling big area coverage at lower operating costs.

Larger multi-gallon reservoirs sustain longer steam sessions without sputtering out mid-shower. Tanks also limit mineral scale accumulation on heating coils which shortens appliance lifespan when neglected. The bigger bodies do require more installation space however.

Overall for most homeowners, opting for an electric tank steam generator paired with auto-flush cleaning cycles and filtration ensures trouble-free operation for under $200 yearly operating costs. Now let’s review vital sizing considerations.

Key Steam Generator Specifications

Choosing the ideal steam generator for your shower, tub or custom steam room requires matching critical electrical and heating factors between your space and appliance capabilities.

Power Rating

Generators indicate maximum electrical power draw in kiloWatt (kW) ratings, similar to large kitchen appliances. Standard household breakers safely support 1.5 kW to 12+ kW units. Match your available circuit capacity to steamer power needs for avoiding nuisance tripping.


Steam generators operate on common 110-120 volt (V) up to 240V circuits. Typical North American 15-20 amp outlets require 120V units. Large custom shower spaces may necessitate bumping voltage to 240V to run more robust heating elements.


Ignoring phase simply means you likely need standard single phase residential power. Commercial steamers utilize specialized 3 phase electricity common to industrial facilities.


Electrical current flow strength calculates from voltage and kW. For example 12 kW @ 120 volts requires 100 amps (12,000 watts / 120 volts = 100 amps) risking tripping 15-20 amp residential circuits. Verify electrical panel has sufficient capacity or upgrade.

Size Rating

Manufacturers rate boiler tank capacity in kiloWatts (kW) indicating the maximum heating power. 3-6 kW suits most residential shower spaces adequately. Commercial units span from 6 kW to 30+ kW ratings.

Steam Room Volume

Estimate your shower or steam room interior cubic volume in feet. Then multiply by 10-15 to determine minimum boiler kW rating needed. Example: 3′ x 4′ x 8′ enclosure = 96 cubic ft x 12 = 1.15 kW minimum generator.

With electrical factors matched between your installed power outlets, circuit breaker capacities and steam generator kW rating, next determine required heating intensities.

Steam Generator Sizing Guide

Choosing the appropriately sized steam generator ensures reliable performance and efficient operating costs matching your unique shower or steam room specifications.

Follow this simple sizing process:

1) Measure interior dimensions of your steam shower stall, tub enclosure or custom room in feet to calculate cubic volume

2) Multiply cubic volume by 10-15 approximating necessary minimum boiler size

3) Ensure adequate electrical supply for supporting chosen generator kW rating

Installation Example:

  • 5 ft x 6 ft Steam Shower Volume = 30 cu ft
  • 30 cu ft x 12 = ~4 kW RequiredGenerator Size
  • 4 kW 120V Generator = 33 Amps (4,000 Watts / 120 Volts)
  • 40 Amp GFCI Breaker Installed Easily Handles 4 kW Steam Generator

With those concepts understood, review general sizing estimates and product suggestions next.

Sizing Estimate Guidelines By Space

  • Tub Enclosures: 1 – 1.5 kW – Mr. Steam or Steamist
  • Shower Stalls: 3 – 6 kW – Steamist, Thermasol, Amerec
  • Steam Rooms <100 cu ft: 6 – 7 kW – Steamist, Thermasol
  • Steam Rooms >100 cu ft: 9 – 30+ kW – Steamist, Thermasol, Amerec

Now that you determined approximate generator size needs, next decide which design and installation works best.

Steam Generator Designs

Manufacturers configure electric steam generators in two main designs:

1. External Generators

As the name denotes, external steam generators install beyond shower or steam room stall inside adjacent closet, vanity cabinetry or basement space. These options work well for retrofitting existing baths into steamers when lacking better positioning options.

Just beware to account for potential steam heat losses from longer delivery tubing runs. Also ensure to safely duct evacuating excess humidity if cabinet enclosed.

2. Internal Generators

Ideal for new custom shower or steam room construction, internal generators embed inside stall walls or floor foundation. This eliminates exterior venting and lagging delivery tubing by directly pumping steam inside space. Just allow for routine cleaning and service access through removable panels.

Now that you know key specifications differentiating quality steam generators for optimal performance matching your space constraints, let’s summarize average price points.

Steam Generator Equipment & Installation Costs

Complete steam generator system costs including equipment and professional expertise for safe installation in residential showers or steam rooms typically ranges:

  • Generator Unit – $700 to $2500+ depending on tankless vs reservoir boiler sizing
  • Plumbing Parts & Labor – $200 to $1000 for valves, copper pipes, insulation and making watertight connections
  • Electrician Fees – $200 to $500 in most regions for wiring and testing GFCI protected power circuits
  • General Contractor – Optional $500 to $1500 to perfectly position generator with venting while sealing all moisture escape paths

Total Investment Range: $1600 to $5000+

With numerous responsibilities requiring technical skills like soldering copper pipe joints or routing ventilation while waterproofing structures, utilizing professional tradespeople works wise for safe long-lasting steam generator implementations.

Top 5 Steam Generator FAQs

Researching your first steam generator purchase for boosting shower relaxation and therapeutic benefits? Here we answer the 5 most frequently asked consumer questions:

What is the best steam shower generator brand?

Top reviewed and reliably performing steam generator brands across thousands of luxury home installations include Mr Steam, Steamist, Thermasol, Amerec, Happy Sauna and Fleck. All offer tank or tankless models from residential to commercial ratings with digital controls.

How long do steam shower generators last?

When properly maintained by following use guidelines, quality steam generator systems last 15-20 years on average before requiring any major component replacements. Their internal heating coils and tanks outlive cheaperChinese models 2X over when replacing water filters and flushing with vinegar regularly to limit mineral scale buildup.

Do all steam shower generators come with a warranty?

Yes, reputable steam generator brands offer excellent 5 to 10 year coverage on residential equipment. Light commercial elements and controllers may still have 1-5 years of protection. This gives confidence for investing in critical shower relaxation upgrades yielding years of high ROI enjoyment.

Can you put a steam shower generator anywhere?

Steam generators allow flexible positioning optimizing newly constructed or existing shower and bath spaces. External generators tuck neatly into closets or basement below. Internal integrated units embed inside shower foundation or walls. Just ensure accessible for service plus properly ducting excess moisture and heat whether installing internally or externally.

What electricity does a steam shower generator use?

Standard steam shower generators operate on common 120V household 15 to 20 amp GFCI protected circuits, consiting of two hot lines totaling 240V. More heavy duty commercial units may require upsizing electrical panels with 50 amp to 80 amp 240V circuits and upgraded wiring gauges. Ensure an electrician evaluates power needs before purchasing equipment.


Upgrading bathrooms and showers with steam generator systems enhances home spa relaxation infinitely beyond basic hot water spraying while powerfully decongesting sinuses and lungs. Their moist penetrating warmth also soothes sore muscles for accelerated athletic recovery.

Carefully matching available electrical capacity and shower/steam room cubic volumes with steam generator sizing ensures reliable heating performance across 10-20 years. Models span tankless to tank-based boilers offering residential to commercial ratings.

With 100+ regular home steam sessions, generators often repay any equipment costs within 12-24 months over gym memberships or medical spa appointments. Just be sure installation allows future access for periodic descaling maintenance and component servicing through removable panels.

Discuss integrating steam generator features with your designer or contractor on upcoming bathroom remodels. Breathing healing heat replenishes the spirit while combating the common cold!