Stiebel Eltron IW 120 Infrared Heater
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Retail prices include VAT.
The Stiebel Eltron IW 120 is a powerful, versatile infrared heater designed to provide instant, targeted warmth. Perfect for UK homes, workshops, or covered outdoor patios, this unit delivers 4094 BTU/hr of heat, making it an ideal solution for spot heating where traditional convection systems might be inefficient. Its robust metal casing ensures durability, while the three-stage heating control allows you to adjust the output to suit your comfort levels. Whether you are looking to extend the use of your garden space during cooler evenings or need a reliable heat source for a garage or workshop, the IW 120 offers a clean, silent, and efficient performance. It is fully compatible with standard UK electrical outlets, ensuring a hassle-free setup. This heater combines Stiebel Eltron's reputation for quality with practical design, providing a reliable heating solution that is both easy to operate and highly effective for immediate thermal comfort.
Add smart control
No built-in Wi-Fi — automate this unit with a smart plug & temperature sensor.
- Free UK mainland delivery on in-stock units
- Manufacturer warranty included
- 14-day returns
Technical documents & videos
More from Stiebel Eltron →Official Stiebel Eltron manual
The manufacturer's PDF for this model is being sourced and will be downloadable here.
Full Specifications
Description
The Stiebel Eltron IW 120 is a powerful, versatile infrared heater designed to provide instant, targeted warmth. Perfect for UK homes, workshops, or covered outdoor patios, this unit delivers 4094 BTU/hr of heat, making it an ideal solution for spot heating where traditional convection systems might be inefficient. Its robust metal casing ensures durability, while the three-stage heating control allows you to adjust the output to suit your comfort levels. Whether you are looking to extend the use of your garden space during cooler evenings or need a reliable heat source for a garage or workshop, the IW 120 offers a clean, silent, and efficient performance. It is fully compatible with standard UK electrical outlets, ensuring a hassle-free setup. This heater combines Stiebel Eltron's reputation for quality with practical design, providing a reliable heating solution that is both easy to operate and highly effective for immediate thermal comfort.
Common questions about the Stiebel Eltron IW 120 Infrared Heater
How many BTU is the Stiebel Eltron IW 120 Infrared Heater?
The Stiebel Eltron IW 120 Infrared Heater is a Accessories — check the specifications for capacity details.
What room size is the Stiebel Eltron IW 120 Infrared Heater suitable for?
The Stiebel Eltron IW 120 Infrared Heater is recommended for rooms Up to 15m².
Can I install the Stiebel Eltron IW 120 Infrared Heater myself?
Yes — the Stiebel Eltron IW 120 Infrared Heater is rated as Easy for self-installation. Guides and video tutorials are available on the product page.
Is the Stiebel Eltron IW 120 Infrared Heater smart-home compatible?
The Stiebel Eltron IW 120 Infrared Heater does not have built-in Wi-Fi control, but you can add smart control using a compatible smart plug.
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Mitsubishi ElectricAnnual energy savings estimate
How much this A-rated unit could save versus a standard C-rated model, based on your usage.
This unit
95 kWh/yr
EER 10
Standard model
119 kWh/yr
EER 8
Est. saving
£6.41
24 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (~9,000 BTU assumed). Actual savings vary with room size, climate and usage patterns.
Winter heating cost: this AC vs electric heaters
This unit reverses to heat your room in winter. Based on its 1 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£243
This AC / season
£81
You save / season
£162
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 300 kWh | £81 | Up to 300% | |
| Plug-in electric heater | 900 kWh | £243 | 100% | |
| Electric storage heater | 900 kWh | £243 | 100% |
Heat output estimated from this unit's 4,094 BTU/hr rating. A heat pump moves heat (COP ≈ 3), so it uses about a third of the electricity of a direct-electric heater for the same warmth. Actual savings vary with room size, insulation, tariff and usage. See the full comparison →
Share your savings
This heat-pump AC costs only £81/season to heat a room vs £243 for an electric heater - that's £162 saved. https://stockool.store/products/stiebel-eltron-iw-120-infrared-heater
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