Three electric radiator brands sold in the UK verifiably manufacture in Germany: Technotherm, Elkatherm and Stiebel Eltron. Two of the most heavily advertised “German” names, Fischer Future Heat and Ecostrad Ecowärme, are UK companies. That distinction matters less than most shoppers expect, because no radiator of any origin turns a kilowatt-hour of electricity into more heat than any other. What the German premium actually pays for is warranty length, heat retention and controls, and this guide puts numbers against whether that is worth the money.
This is a comparison built from manufacturer specifications, Companies House records and published retail prices, all checked in August 2026. Guides4Homeowners has not tested these radiators in a home.
The brands that genuinely manufacture in Germany
Five “German” electric radiator brands sold in the UK, split by where the product is made
Three brands on the UK market state a German manufacturing location that can be checked against a company address.
| Brand | Manufacturing base | Core technology | Stated warranty |
|---|---|---|---|
| Technotherm | Burgstädt, Saxony | Ceramic stone tablets | 15 years on KS High Heat Retention range |
| Elkatherm | Montabaur, Westerwald | Fireclay core tablets | Not published on the UK site |
| Stiebel Eltron | Holzminden (plus plants outside Germany) | Varies by product | Varies by product |
- Technotherm is a brand of LUCHT LHZ Elektroheizungen GmbH, based at Reinhard-Schmid-Straße 1 in Burgstädt, Saxony. Its German site states that all Technotherm products are developed and manufactured in Germany. This is the clearest origin claim of any brand in the category, because it names a factory town rather than a design philosophy.
- Elkatherm was founded in 1954 in Montabaur, in the Westerwald region of western Germany, and has been run by the Henrich family since 1991. Its radiators use fireclay core tablets with fully embedded elements.
- Stiebel Eltron is the largest name here, founded in 1924 and headquartered in Holzminden. It is worth being precise about this one. Stiebel Eltron runs German plants at Holzminden, Eschwege and Gifhorn, but it also manufactures in Poprad in Slovakia, in Ayutthaya in Thailand, and in China. A Stiebel Eltron product is a German company’s product. It is not automatically a German-made product, and the company does not publish a per-model breakdown.
The brands that are German by name, not by factory
Two of the most visible “German” radiator brands in UK search results are registered UK companies that do not state where their radiators are made.
Ecostrad Ecowärme. Ecowärme is German for “eco-warmth”, and a product name is not a passport. Ecostrad’s own German electric radiators page markets the range on quality and design expertise while referring to its “UK based team of advisors”. Neither that page nor the retailer product listing for the 2000W model states a country of manufacture. The radiator itself is a reasonable piece of kit, using ceramic heating bricks above an aluminium convection element. The German framing around it is doing work the specification sheet does not support.
Fischer Future Heat. Fischer’s website describes its products as “German electric-engineered” and claims “over 75 years of German manufacturing expertise”. Read that phrasing closely, because it is a statement about heritage rather than about where a radiator was built. Companies House lists Fischer Future Heat UK Limited as incorporated on 7 December 2006, registered at 5 Merchant Square in London, under SIC code 47990, “other retail sale not in stores, stalls or markets”. The registered business activity is retail. No current manufacturing location appears on the company’s UK site.
None of this makes either product bad. It makes the word “German” unreliable as a shortcut for quality, which is exactly how it is being used in the advertising that sends most people looking for this comparison in the first place.
Why “German engineering” cannot lower your running costs
Every electric radiator converts essentially all the electricity it draws into heat, regardless of price, brand or country of origin. A £830 ceramic-core radiator from Saxony and a £40 fan heater running at the same wattage for the same length of time cost exactly the same to run.
This is the single most common mistake in this category. Shoppers read “efficient” on a premium radiator and assume it means cheaper per hour. It does not, because there is no meaningful efficiency headroom left to sell. The only genuine lever is the duty cycle, meaning how much of each hour the radiator actually draws power before its thermostat cuts out. Better controls and better heat retention shorten that. They do not change the price of a kilowatt-hour.
UK regulation closed most of the remaining gap in 2018. Under Lot 20 of the Ecodesign Directive (2009/125/EC), which came into force on 1 January 2018, every fixed electric heater with an output above 250W must reach a minimum 38% efficiency rating. In practice that means electronic room temperature control plus a weekly programmer, or equivalent features such as open window detection or adaptive start. Basic manual dials were effectively phased out. A budget panel heater sold legally in the UK today already has the class of controls that used to be a premium selling point.
For the wider picture on how electric heating compares with gas, the Energy Saving Trust puts electricity at around four times the price of gas per unit, and notes that storage heaters on an off-peak tariff undercut direct electric heating of any kind.
What the German premium actually pays for
The premium is real, and it is spent on hardware and warranty rather than on efficiency.
The Technotherm KS TDI range is the clearest example. It carries a 15-year warranty, which is the genuinely unusual number in this category when two years is the norm. The radiator holds patented ceramic stone tablets that continue emitting heat for up to 45 minutes after it stops drawing electricity, across a surface area the manufacturer states is six times greater than a flat panel. Units are 630mm high and 70mm deep, with widths from 380mm to 1280mm depending on output.
Across the Technotherm ranges sold by that retailer, prices run from £299.99 to £829.99 including VAT, covering 600W to 2400W. Low surface temperature variants are available, which matters in a nursery, a care setting or anywhere a hot panel at knee height is a hazard rather than an inconvenience.
That list is a fair description of what money gets you. Longer warranty, slower heat decay, steadier room temperature, sturdier build. Those are comfort and lifespan arguments. They are not running cost arguments, and the retailers selling these radiators are not always careful about the difference.
What it costs to run in 2026
A 2000W electric radiator costs 52p an hour at full draw under the current price cap.
The Ofgem price cap sets electricity at 26.11p per kWh for direct debit customers in England, Scotland and Wales between 1 July and 30 September 2026. That figure changes quarterly, so check it before relying on the table below.
| Output | Full draw, per hour | 5-hour evening at 50% duty cycle |
|---|---|---|
| 1000W | 26p | 65p |
| 1500W | 39p | 98p |
| 2000W | 52p | £1.31 |
| 2400W | 63p | £1.57 |
Working for the 2000W row: 2kW × 5 hours × 50% duty cycle = 5kWh, and 5 × 26.11p = £1.31.
Now the part that decides the purchase. Run that 2000W radiator every evening across a 182-day heating season and it costs about £238. Assume a £680 gap between a top-of-range German unit and a Lot 20 compliant budget alternative of the same output. For the German radiator to repay that gap on electricity alone, it would need to cut consumption by enough to matter, and a generous 10% duty cycle advantage saves roughly £24 a year.
That is a payback period of about 29 years. The premium has to be justified on warranty, safety and comfort, because it will not be justified on the meter.
For a fuller treatment of running costs across radiator types, see our guide to energy-efficient electric radiators and 2026 running costs, and the worked example in our breakdown of Fellie 2000W electric radiator running costs.
Who should choose one, and who should skip it
A German-made radiator makes sense if you are heating a room permanently and expect the unit to outlive several cheaper replacements.
Worth the premium if:
- The radiator is a permanent main heat source in a room used daily, where a 15-year warranty spreads the cost over a long life
- You need a low surface temperature model for a child’s room, a care setting or a nursing environment
- The room loses heat slowly and you value steady output over fast response
- You are replacing storage heaters and want something that holds warmth between cycles
Skip it if:
- You are heating a room occasionally, such as a spare bedroom or a home office used twice a week
- You want fast, responsive heat, where a cheaper panel or convector reacts more quickly
- Your budget is better spent on insulation, which cuts the demand rather than the unit cost of meeting it
- You have an off-peak tariff, where storage heating undercuts direct electric heating of any brand
One practical note. Several brands in this category, Fischer among them, sell through in-home consultations rather than retail listings. If you are quoted a price at your kitchen table, the comparison figures above are worth having open on your phone.
Installation and Part P. Adding a fused spur to an existing circuit for an electric radiator is not notifiable work. Installing a new circuit is notifiable under Part P of the Building Regulations in England and Wales, and so is altering an existing circuit in a bathroom or other special location, according to the IET’s Part P guidance. Use a registered competent person for notifiable work, or notify building control before starting.
Comparable options in other formats are covered in our guides to wall-mounted electric radiators, oil-filled radiators and small room space heaters.
Common questions
Are German electric radiators more efficient than British ones?
No. All electric resistance heaters convert essentially all the electricity they draw into heat, so there is no efficiency difference between brands or countries of origin. Since Lot 20 came into force in January 2018, every fixed electric heater above 250W sold in the UK must also meet the same minimum control standards.
Which electric radiator brands are actually made in Germany?
Technotherm states that all its products are developed and manufactured in Germany, at Burgstädt in Saxony. Elkatherm manufactures at Montabaur. Stiebel Eltron is a German company with German plants, but it also manufactures in Slovakia, Thailand and China, and does not publish a per-model origin breakdown.
Is Fischer Future Heat a German company?
Fischer Future Heat UK Limited is registered in England and Wales, incorporated in December 2006, with a London registered office and a retail SIC code. The company describes its products as drawing on 75 years of German manufacturing expertise, which is a claim about heritage rather than a statement of where radiators are currently built.
What does a German electric radiator cost?
Technotherm radiators sold through UK retailers ranged from £299.99 to £829.99 including VAT in August 2026, covering outputs from 600W to 2400W. Prices vary by output, format and retailer.
How much does a 2000W German radiator cost to run?
About 52p an hour at full draw, based on the Ofgem price cap rate of 26.11p per kWh for July to September 2026. In practice a thermostatic radiator draws power for part of each hour once the room is warm, so a 5-hour evening at a 50% duty cycle works out around £1.31.
Do electric radiators need an electrician?
Not always. Connecting to an existing fused spur is not notifiable under Part P. A new circuit is notifiable, and so is circuit work in a bathroom or similar special location, which means using a registered competent person or notifying building control.
