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Insignia Signature 18kW Domestic Steam Generator Set — Starter Collection

£4,077.40
18kW Steam Generator
6 Chromotherapy LED Lights + Water Treatment
3-Phase Supply Required (380–415V)
Sized for the Largest Steam Rooms of 16–22 m³
Kerbside Delivery
Free UK Delivery

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  • Product Description
  • Specifications
  • Buying Guide
  • Delivery & Installation
  • Warranty
  • Return Policy
  • Resources
Product Description -

Insignia Signature 18kW Domestic Steam Generator Set — Starter Collection

The Insignia Signature 18kW Domestic Steam Generator Set is the most powerful generator in the Signature range — a complete starter kit for the largest home steam rooms. It's the generator that produces the steam, supplied with lighting, control and water-treatment components to finish the installation. With 18kW of output it suits steam rooms of around 16–22 m³.

The Signature generator is built from stainless steel inside and out and uses Sectional Heating Technology — nine 2 kW heating elements fire together for a fast start, then stage down to hold temperature efficiently. As the largest unit it uses two 3/4" steam outlets for even steam distribution. A waterproof digital touch-control panel runs temperature, run time, humidity and lighting, while automatic fill, top-up and drain, plus overheat and low-water-level protection, keep operation simple and safe. The Starter set adds six colour-changing LED lights, a water-treatment cartridge and a steam-room sign.

As an 18kW unit it must be connected to a 3-phase (380–415V) supply by a qualified electrician — it will not run on a standard single-phase domestic circuit. It is delivered kerbside with free UK delivery, and professional installation is available. (This is the steam-generating equipment and kit — the enclosure, glass, pipework and connections are completed on site.)

Technical Specifications

  • Model: Signature 18kW Domestic Steam Generator Set — Starter (SKU T18-DOM-A) 
  • Brand: Insignia
  • Power: 18 kW (range's most powerful)
  • Supply: 3-phase 380–415V only
  • Current: 27.3 A
  • Elements: 9 × 2 kW
  • Breaker: 25 A (installer to confirm to BS 7671; RCD required)
  • Room volume: 16–22 m³
  • Generator size: 510 × 185 × 460 mm
  • Build: stainless steel
  • Control: waterproof digital touch panel
  • Lighting: 6 chromotherapy LEDs
  • Water treatment: cartridge included
  • Water: cold ½" feed via cartridge (max ~8 bar); ¾" drain
  • Steam outlets: two 3/4", copper/stainless pipe only (do not cross)
  • Delivery: kerbside, free UK delivery; installation available
  • Warranty: 12 months (→ 2 years with approved water processor)

Safety & Usage Guidance

Steam rooms are for healthy adults only. Please observe the following (per Insignia's safety guidance):

  • Never allow children to use the steam function — this is for adults only, and never leave children unattended near the steam room.
  • Do not use the steam room if you are pregnant, have a heart condition, or have low or high blood pressure. If unsure, consult your GP before use.
  • Consult your GP before use if you have any underlying health condition that could be aggravated, or if you take any medication (especially with drowsy side-effects).
  • Exit immediately if you feel dizzy, faint or short of breath, and consult your GP if symptoms develop.
  • Never use the steam room after alcohol or other substances.
  • Be aware of the steam-outlet position — never sit in close proximity to it.
  • Proper ventilation is recommended. Always turn the power and water supply off after use.
Specifications +

The Insignia Steam Generator Specifications

Specification Category Technical Details
Brand Insignia
Model Signature 18kW Domestic Steam Generator Set — Starter
SKU T18-DOM-A
Power Output 18 kW (Range's most powerful)
Electrical Supply 3-Phase 380–415V only
Current Draw 27.3 A
Heating Elements 9 × 2 kW elements
Circuit Breaker 25 A (Installer to confirm to BS 7671; RCD required)
Recommended Room Volume 16 – 22 m³
Generator Dimensions 510 × 185 × 460 mm (W × D × H)
Build Material Stainless steel
Control System Waterproof digital touch panel
Lighting Integration 6 × Chromotherapy LEDs
Water Treatment Cartridge included
Water Supply & Drain Cold ½" feed via cartridge (max ~8 bar); ¾" drain
Steam Outlets Two ¾" outlets (Copper/Stainless steel pipe only; do not cross)
Delivery Terms Kerbside delivery | Free UK Delivery | Installation available
Warranty 12 Months (Extendable to 2 Years with approved water processor)
Buying Guide +

The Insignia Steam Generator Buying Guide

1. Size the generator to your room Steam generators are matched to room volume (m³). Insignia's Signature range:

Model

Phase

Suitable Room Volume

7.5 kW

Single or 3-phase

6.5 – 9 m³

10.5 kW

3-phase only

9 – 12 m³

12 kW

3-phase only

11 – 14 m³

15 kW

3-phase only

13 – 18 m³

18 kW (this set)

3-phase only

16 – 22 m³

The 18kW is the largest unit, for the biggest rooms. Heavily tiled, stone or glass rooms, high ceilings or poor insulation lose heat faster — the 18kW is the right choice for large or hard-to-heat rooms.

2. Check your electrical supply (important) This 18kW model is 3-phase (380–415V) only — it cannot run on single-phase. You'll need a qualified electrician to provide a 3-phase circuit with an RCD and isolator.

3. Plan water, drainage and the generator location The generator needs a cold-water feed and a drain, and should sit in a dry, ventilated space within a short pipe run of the steam room. The 18kW has two steam outlets (two separate copper/stainless pipes). Steam and drain pipes must be copper or stainless steel (never plastic).

4. Choose your kit level This Starter set includes the generator, six LED lights, the water-treatment cartridge and control gear. The Premium set adds salt therapy (a halotherapy atomiser); the Platinum set adds aromatherapy and a heavy-duty exhaust fan. An automatic descaling pump is available separately and unlocks Insignia's longer component-warranty terms.

5. Delivery & installation Delivered kerbside with free UK delivery; professional installation is available. Electrical and plumbing connections should be by qualified trades.

Delivery & Installation +

Delivery & Installation

Delivery Free UK delivery, kerbside. Check the contents on arrival against the included-items list and report any transit damage immediately.

Installation (professional recommended) The set is supplied for installation into a prepared steam-room enclosure. The generator is mounted in a dry, ventilated location within pipe reach of the room; the two steam outlets, LED lights and control panel are fitted, and the unit is connected to water, drain and power and commissioned. Professional installation is available and recommended for the electrical and plumbing work.

Electrical (must read — 3-phase only) This 18kW generator is hard-wired to a 3-phase 380–415V supply by a qualified electrician — it cannot run on a standard single-phase domestic circuit. Key requirements (per the install manual):

  • A 5-core supply to the generator terminals (L1/L2/L3, neutral, earth); minimum live/neutral 4.0 mm², earth 2.5 mm² (Insignia specify 5 × 4 mm² for the 18kW) — the electrician will size to the load and to BS 7671.
  • An RCD must be fitted on the supply, plus a means of isolation (the controller's on/off does not cut the mains).
  • All work to comply with Part P and local/national wiring regulations, by a competent electrician.

Water & drainage A cold-water feed only (½", through the supplied treatment cartridge and a flexible stainless hose; fit a pressure-reducing valve if supply pressure exceeds ~8 bar) and a ¾" drain (copper/stainless, downward gradient to waste). No water pump is required.

Warranty +

Manufacturer's Warranty

The Insignia Signature steam generator comes with a 12-month warranty as standard, which upgrades to two years with the additional purchase and installation of an approved Insignia water processor/filter (the included water-treatment cartridge is the qualifying component).

Insignia also publishes a component-level warranty schedule. The longer component terms below apply when the automatic descaling pump is fitted (an accessory not part of this Starter bundle); without it, the shorter terms apply.

Component

With Auto-Descaling Pump

Without

Controller

2 years

2 years

Heating element

2 years

1 year

Steam generator body

5 years

1 year

Water-level / temperature sensor

2 years

1 year

Control box / drain valve

1 year

1 year

LED lights

1 year

1 year

Conditions

  • Cover requires correct installation by competent trades, use of a cold-water supply, and regular descaling/maintenance.
  • Excludes scale damage from missed maintenance, misuse, and non-original parts.
  • Register your warranty and keep your proof of purchase. Full terms: insigniashowers.com/warranty-terms.

We'll confirm the exact warranty position (and the 2-year upgrade route) for your order

Return Policy +

Returns and Refunds Policy

As a UK-supplied product, this steam generator set is covered by your standard statutory rights.

1. Your Statutory Rights

  • Under the Consumer Rights Act 2015, goods must be of satisfactory quality, fit for purpose and as described.
  • Where the Consumer Contracts Regulations 2013 apply, a 14-day cancellation right is available for unused, uninstalled goods in their original packaging.

2. Before You Install

  • Confirm your 3-phase supply and room size before installing. Returns cannot be accepted once installation/commissioning has begun.

3. Inspection on Delivery

  • Inspect your delivery on arrival and report any transit damage to contact@balancerecovery.co.uk within 48 hours with photographs.

4. Faults & Defects

  • Manufacturing faults are handled under the warranty above and your statutory rights — contact our team and we'll coordinate inspection, repair or replacement.

5. Contact

  • Email contact@balancerecovery.co.uk — we aim to respond within one business day.

Resources +

Installation & User Manual (Signature 18kW) 

Product Overview

Insignia Signature 18kW Domestic Steam Generator — The Complete Starter Set

The Insignia Signature 18kW Domestic Steam Generator Set is the most powerful generator in the Signature range — a complete home-steam kit for the largest steam rooms. It's the generator that turns a tiled or sealed enclosure into a full steam room, supplied with lighting, control and water-treatment components to finish the installation. With 18kW of output it heats steam rooms of around 16–22 m³.
At its heart is a stainless-steel steam generator (inside and out) with Sectional Heating Technology for a fast start, a waterproof digital touch-control panel, and automatic water management (auto-fill, auto top-up and auto-drain) with overheat and low-water protection. As the largest unit it uses two 3/4" steam outlets for even steam distribution. The Starter set adds six colour-changing (chromotherapy) LED lights, a water-treatment cartridge and a steam-room sign.As an 18kW unit it must be wired to a 3-phase (380–415V) supply by a qualified electrician — it cannot run on a standard single-phase domestic circuit. Delivered kerbside with free UK delivery; professional installation is available.

Why Choose Insignia Signature 18kW Domestic Steam Generator Set?

The range's most powerful home steam generator, for the largest rooms.

The Most Powerful in the Range

At 18kW it's Insignia's biggest Signature generator — for the largest home steam rooms of around 16–22 m³.

A Complete Starter Set

More than a bare generator: the set includes six LED lights, a water-treatment cartridge, steam-room sign, control panel and control box.

Twin Steam Outlets

As the largest unit it uses two 3/4" steam outlets for even, efficient steam distribution across a big room.

Heavy-Duty Stainless-Steel Build

The Signature generator is stainless steel inside and out, designed for robust, repeated domestic use.

Fast, Efficient Heat-Up

Sectional Heating Technology fires the elements together for a quick start, then stages them to hold temperature efficiently.

UK-Supplied with Warranty & Support

Supplied in the UK with a manufacturer warranty (12 months, upgradeable to 2 years with an approved water processor) and UK back-up.

Wellness Benefits

Why people add a steam room at home.

Relaxation & Unwinding

Warm, humid steam is a simple, time-honoured way for adults to relax and de-stress.

A Soothing Warm-Steam Ritual

Many people find warm steam comforting and pleasant for breathing and a sense of "clearing the head".

Skin-Cleansing Feel

Warm steam gives the deep-cleanse feel for the skin that many spa-goers enjoy.

Chromotherapy Mood Lighting

Six colour-changing LEDs let you set a calming or uplifting colour mood for your steam session.

Post-Exercise Wind-Down

A warm steam session is a pleasant way to relax tired muscles after a workout or swim.

A Sociable, Spacious Steam Room

A large 16–22 m³ steam room makes a generous, sociable wellness space at home.

Premium Features

Signature details of the Insignia 18kW Starter set.

Stainless-Steel Generator

Stainless-steel construction inside and out for durability against constant heat and moisture.

Most Powerful Sectional Heating (Fast Start)

Nine 2 kW heating elements deliver a rapid heat-up across the largest rooms, then stage down to maintain temperature efficiently.

Twin 3/4" Steam Outlets

Two steam outlets give even steam distribution across a large room.

6 Chromotherapy LED Lights

Fully waterproof colour-changing LEDs with fixed or scrolling modes and a memory function.

Waterproof Touch-Control Panel

A single waterproof touch panel controls temperature, run time, humidity and lighting; best fitted just outside the room.

Automatic Water Management & Protection

Auto-fill, automatic water top-up during use and auto-drain, plus overheat and low-water-level protection.

What's Included?

The Full 18kW Domestic Starter Experience—Engineered With Everything You Need

Insignia Signature 18kW Steam Generator (stainless steel)

6 colour-changing (chromotherapy) LED lights

Water-Treatment Cartridge (scale reducer)

Steam Outlet Nozzle(s)

Control Panel (waterproof touch screen) and Control Box

Free UK delivery (kerbside)

step-by-step instructions

From Order to First Steam Session in 6 Steps

Size Your Steam Room

Confirm your room volume (this 18kW unit suits ~16–22 m³ — the largest in the range). If your room is smaller, the 15kW (13–18 m³) may suit better.

Confirm Specification & Order

Check you have (or can install) a 3-phase 380–415V supply and a cold-water feed and drain near the generator location, then order.

Prepare the Services

A qualified electrician runs the 3-phase supply (with RCD and isolator); a plumber provides the cold-water feed and drain. The generator sits in a dry, ventilated space within pipe reach of the room.

Delivery

Your set is delivered kerbside (free UK delivery). Check the contents on arrival and report any transit damage immediately.

Installation & Commissioning

The generator is plumbed and wired (two steam outlets), the LEDs and control panel fitted, and the system commissioned. Professional installation is available.

First Steam

Set your temperature and time on the touch panel, and enjoy. Always follow the Safety & Usage guidance.

Build Overview

Technical Specifcations

SpecificationDetails
ModelInsignia Signature 18kW Domestic Steam Generator Set — Starter Collection (SKU T18-DOM-A)
ManufacturerInsignia
TypeDomestic electric steam generator (steam-room boiler + starter kit)
Power Output18 kW (the range's most powerful)
Electrical Supply3-phase 380–415 V only (50/60 Hz) — cannot run single-phase
Rated Current27.3 A (3-phase)
Heating Elements9 × 2 kW (Sectional Heating Technology)
Circuit / Breaker25 A (per Insignia; installer to confirm protective device to BS 7671); RCD required
Cable (minimum)Live/neutral ≥ 4.0 mm², earth ≥ 2.5 mm² (5-core; Insignia's 18 kW power wire is 5 × 4 mm²) — electrician to size to load and BS 7671
Suitable Room Volume16–22 m³ (see sizing guidance)
Generator Dimensions510 × 185 × 460 mm (L × W × H)
ConstructionStainless steel (inside and out)
ControlWaterproof digital touch-control panel (temp, time, humidity, lighting)
Lighting6 colour-changing (chromotherapy) LED lights
Water SupplyCold feed only, ½" via treatment cartridge + flexible stainless hose; max ~8 bar (fit PRV if higher)
Drain¾" copper/stainless to waste, downward gradient (water > 100 °C)
Steam OutletsTwo ¾" outlets; copper/stainless steam pipe only (never plastic); do not cross the pipes; short runs, minimal bends
Water ManagementAuto-fill, auto top-up, auto-drain; overheat & low-water protection
DeliveryKerbside (free UK delivery); installation available
Warranty12 months; upgrades to 2 years with an approved water processor (see Warranty)

Technical Notes

Frequently Asked Questions

Is the 18kW steam generator single-phase or 3-phase?
What size steam room does an 18kW generator suit?
Why does the 18kW have two steam outlets?
What's included in the Starter set?
How is the Starter different from the Premium and Platinum sets?
Can I install it myself, or do I need a professional?
What warranty does it carry?
Is a steam room safe — who shouldn't use one?

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