What's in the box: K1, remote and manual

Swipe for more photos →

Official UK website

Ofenwerk K1 Heater

A compact 1200W ceramic heater for British homes. Warm air in about 2 seconds, heats rooms up to 20 m², and costs about 16p an hour in typical use.

Why people choose the K1

Heats the room you're in, not the whole house
Tip-over and overheat cut-offs, cool-touch casing
Thermostat and remote control included
Light enough to carry from room to room

Choose your bundle

✓ Free UK delivery

You pay £89 today · Free tracked UK delivery · VAT included · No subscription

You save £29 compared with buying separately

Free tracked UK delivery
30-day money back
2-year warranty

Secure, encrypted checkout powered by Shopify

Questions before you buy? Contact our UK team

Is Ofenwerk legit?

This is the official UK website for the Ofenwerk K1.
Payment through Shopify's secure checkout. We never see your card.
30-day money back: not happy, send it back.
Free tracked UK delivery and a 24-month warranty.
Questions? Contact us or read about Ofenwerk.

Ofenwerk K1 price in the UK

The Ofenwerk K1 Heater costs £59 for one, £89 for two, £119 for three, £179 for four and £239 for five. Delivery is free and tracked anywhere in the UK, and VAT is included. These are the official prices from ofenwerk.co.uk.

Who the K1 is for

Living rooms in the evening: turn the central heating down and warm the room you sit in. See plug-in heater vs central heating.
Bedrooms: warm the room before bed or while you get dressed. See best heater for a bedroom.
Home offices: stay warm at your desk without heating the whole house. See home office heaters.
Older parents: simple controls, cool-touch casing and automatic cut-offs. See heaters for elderly parents.
Conservatories and small rooms: fast warmth for short visits. See conservatory heaters.

What's in the box

1 × Ofenwerk K1 ceramic heater (UK 3-pin plug)
1 × remote control
1 × user manual

Key features

PTC ceramic core. It reaches working temperature in about 2 seconds and limits its own temperature. How it works.
Thermostat. Holds your chosen temperature, so you're not paying for full power all the time.
Safety cut-offs. Tip-over and overheat protection, plus a cool-touch casing.
Portable. At about 0.5 kg it's easy to move from the living room to the bedroom.
Quiet. A gentle fan sound, with no ticking or clicking.

What it costs to run (current UK prices)

At the Ofgem price cap of 26.32p per kWh (1 October to 31 December 2026), a 1200W heater like the K1 costs about 32p an hour at full power. Once the room is warm the thermostat switches the heater on and off, so in normal use it averages about 16p an hour.

How long	Typical cost per day	Over 30 days
1 hour	16p	£4.74
An evening (4 hours)	63p	£18.95
A working day (8 hours)	£1.26	£37.90

Your own price may be a little higher or lower depending on your region and tariff. See how we calculate running costs or try the running cost calculator with your own unit rate.

How the K1 compares with other heaters

Heater type	Warm in	Running cost	Safety and comfort
Ofenwerk K1 (ceramic)	About 2 seconds	About 16p/hour typical	Tip-over and overheat cut-off, cool-touch case, no glowing coil
Coil fan heater (2–3kW)	Seconds	53–79p/hour at full power	Hot coil, can smell of burnt dust, often noisy
Oil-filled radiator (1.5–2.5kW)	20–30 minutes	39–66p/hour at full power	Surfaces get hot, heavy to move
Convector (2kW)	10–15 minutes	About 53p/hour at full power	Heat rises to the ceiling first
Electric blanket (100W)	10–20 minutes	About 3p/hour	Warms the bed only, not the room

Full-power costs worked out at 26.32p per kWh. Thermostats lower all of these in real use.

How to use your K1

Unbox it and stand it on a flat, hard surface at least 1 metre from curtains and furniture.
Plug it straight into a wall socket. Don't use an extension lead.
Press the power button or use the remote, then set your temperature.
Let the thermostat do the work. Once the room is warm, it switches on and off to hold the temperature.

Using any electric heater safely

These tips follow UK fire-service and Electrical Safety First advice and apply to any portable heater, including ours:

Plug the heater straight into a wall socket. Don't use an extension lead or adaptor; they can overheat.
Keep it at least 1 metre from curtains, bedding, clothes and furniture.
Stand it on a flat, hard, stable surface where it can't be knocked over.
Never cover it or dry clothes on it.
Switch it off at the wall when you go out.
Check the plug and cable now and then. Stop using it if either is damaged or feels hot.
Make sure you have a working smoke alarm on every floor. Many UK fire services fit them free for older residents.

When the K1 is not the right choice

We'd rather you buy the right heater than return ours. The K1 is probably not for you if:

You want to heat a large open-plan space over about 20 m² with one heater. Two K1s, or a bigger heater, will do a better job.
You want to replace central heating for the whole house.
You only feel cold once you're in bed. An electric blanket is cheaper for that.
You need a heater for a bathroom. The K1 isn't rated for wet rooms.

Specifications

Power	1200W
Heating element	PTC ceramic
Room size	Up to 20 m²
Warm-up	About 2 seconds
Weight	About 0.5 kg
Controls	Touch panel, thermostat and remote
Safety	Tip-over and overheat cut-off, cool-touch casing
Plug	UK 3-pin
Warranty	24 months

Delivery, returns and warranty

Delivery: free and tracked anywhere in the UK. See delivery details.
Returns: 30-day money-back guarantee. See returns and refunds.
Warranty: 24 months against faults. See warranty.

Ofenwerk K1: frequently asked questions

Is Ofenwerk legit?

Yes. ofenwerk.co.uk is the official UK website for the Ofenwerk K1. You pay through Shopify's secure checkout, so we never see your card details. Every order includes free tracked UK delivery, a 30-day money-back guarantee and a 24-month warranty.

Where can I buy the Ofenwerk K1 Heater in the UK?

Directly from ofenwerk.co.uk. Buying here gets you the genuine product, our bundle prices and our guarantees.

How much is the Ofenwerk K1?

£59 for one, £89 for two, £119 for three, £179 for four and £239 for five. Delivery is free across the UK and VAT is included.

How much does the K1 cost to run?

At the current Ofgem price cap, about 32p an hour at full power and about 16p an hour in typical thermostat use.

Is the Ofenwerk K1 worth it?

If you want to warm one room quickly without heating the whole house, it's a low-cost, safe option. If you need to heat a large open-plan space or the whole house, it isn't the right heater, and we'd rather tell you that up front.

Can I leave the K1 on overnight?

It has a thermostat plus tip-over and overheat cut-offs. Even so, we recommend warming the bedroom before bed and switching it off, which is cheaper and follows UK fire-safety advice.

Is the K1 noisy?

It has a small fan, so you'll hear a gentle sound, a bit like a quiet laptop. There's no ticking or clicking.

What happens if it stops working?

Can I send a K1 to my mum's or dad's address?

Yes. Just enter their address as the delivery address at checkout. Delivery is free and tracked anywhere in the UK.

Does the K1 come with a UK plug?

Yes, it has a standard UK 3-pin plug. No adaptor is needed.

Sources and how we checked this guide

Electricity price: Ofgem: energy price cap unit rates and standing charges, checked 25 October 2026.
Heater safety: UK fire and rescue service advice and Electrical Safety First guidance on portable heaters.
K1 figures (1200W, about 2-second warm-up, room size up to 20 m², safety cut-offs) come from the product specification.
Costs are worked out with the method on how we calculate running costs.