Best oil-filled radiator for efficient, affordable warmth this winter

Cut down on bills, not comfort. These economical oil-filled radiators heat quickly, hold warmth well and keep running costs low.

By Poppy O'Neill | Last updated Sep 23, 2026

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A collage of the best oil-filled radiators

With fuel bills still uncomfortably high, many families are looking for cheaper, smarter ways to stay warm through the colder months. The best oil-filled radiators are efficient, low-maintenance electric heaters that add steady warmth without relying on the central heating. Unlike electric blankets or heated gilets, oil-filled radiators heat the room rather than just one person - plus they retain warmth for much longer, meaning you can switch them off and still feel toasty for some time. They’re quiet, affordable to run and easy to move wherever you need them.

Oil-filled radiators are ideal for heating one room at a time: whether that’s keeping a home office comfortable, taking the chill off a child’s bedroom or adding extra warmth to the living room on a cold evening if a blanket hoodie isn't quite cutting it. The gentle, even heat they produce won’t dry out the air or stir up dust, making them a good option for families with young children or allergies. Many models also come with built-in thermostats, timers and safety cut-offs, so you can warm up spaces safely and efficiently whenever you need to.

But with so many options on the market, how do you pick the right one? Whether you’re after a compact model for a small space, a powerful heater for an open-plan room, or a digital design you can control precisely, we’ve rounded up the best oil-filled radiators Mumsnetters swear by so that you can keep your home snug all winter long without breaking the bank.

Best oil-filled radiators at a glance

Award

Product 

Heat settings

Cost per hour 

Timer 

Best overall

VonHaus Oil-Filled Radiator 

800W/1.2kW/2kW

Approximately 21p-52p p/h

No 

Best budget

Kingavon 1500W 7-Fin Oil-Filled Radiator

600/900/1.5kW

Approximately 15- 39p p/h

No 

Best for large rooms

De’Longhi Dragon 4 2500W Oil-Filled Radiator

1.1kW/1.4kW/2.5kW

Approximately 28-65p p/h

Yes 

Best small

De’Longhi 500W Nano Oil-Filled Radiator 

500W

Approximately 14p p/h

No

Best with timer 

Morphy Richards HeatFlux Digital Oil-Filled Radiator 

1kW/1.5kW/

2.5kW

Approximately 26-65 p p/h

Yes 

Best with thermostat 

John Lewis 2500W Oil-Filled Radiator 

2.5kW 

Approximately 65p p/h

Yes 

How we chose the best oil-filled radiators 

We combined Mumsnet users’ recommendations with Mumsnet’s hands-on reviews, current product specifications and verified buyer feedback to find reliable oil-filled radiators for different rooms, needs and budgets.

Recommendations from real Mumsnet users

We searched recent Mumsnet Talk discussions for first-hand experiences of oil-filled radiators, focusing on feedback about heat output, how quickly rooms feel warmer, ease of use, running costs, portability, reliability and suitability for bedrooms, home offices and other small spaces. Where users recommended a particular brand rather than the exact model, we’ve made this clear.

Expert input and desk research

We compared each oil-filled radiator’s power output, number of heat settings, dimensions, portability and energy use. Because oil-filled radiators provide steady, convective heat and take longer to warm up than some other portable heaters, we’ve considered how effectively they maintain a comfortable temperature in everyday use, rather than relying solely on advertised room-size claims. We’ve also looked at practical features such as adjustable thermostats, timers, castors, handles and overheat protection.

Verified-buyer feedback

We checked verified customer feedback from major UK retailers and manufacturer websites, looking for recurring comments about heat output, how quickly the radiator warms up, build quality, controls, portability, reliability and running costs. We also considered negative reviews to identify common drawbacks, including slow initial heat-up, thermostat accuracy, stability and overall durability.

💙 Why you can trust us

We haven’t tested every oil-filled radiator in this guide in-house, but we recommend only models that consistently perform well across these sources. Where we have run hands-on tests, we clearly say so in the review. For more details on how we choose and test products on Mumsnet, see our how we test page.

How Mumsnet content works

Find the best oil-filled radiator for you

1

Best oil-filled radiator overall

VonHaus Oil-Filled Radiator

What we like
  • Heats rooms quickly

  • Low cost 

  • Can be wheeled between rooms

  • Three heat settings give flexibility

What we don't like
  • Slightly bulky design

  • No digital controls

Key specs

Price on writing: £53 | Size: 63 x 44 x 24cm | Weight: 8.4kg | Heat settings: 800W/1.2kW/2kW | Room coverage: 25m² | Tip-over protection: Yes | Overheat protection: Yes | Adjustable thermostat: Yes | Cost per hour: Approx 21p-52p p/h | Timer: No 

Our verdict

Tested by Mumsnet editor Tina: Read our in-depth VonHaus Oil-Filled Radiator review 

If you’re after great value and dependable heat, the VonHaus 9-fin oil-filled radiator is a solid all-rounder. Our tester Tina, trialled it for eight weeks in her Victorian family home, using it in a draughty front room which struggles to feel cosy.

With a simple white design, this compact, freestanding radiator has four castor wheels, making it easy to move around as needed. While it lacks smart controls, a remote, timer or precise temperature settings, Tina felt the VonHaus Oil-Filled Radiator offered excellent value for money. The two manual controls are quick to master and straightforward to use, while the built-in tip-over protection and overheat shut-off  provided welcome peace of mind in a busy family home. 

With a 2000W output and adjustable thermostat, Tina found it took around 10 to 15 minutes to fully warm up her surroundings. Unlike a quick blast from her fan heater, however, the nine fins and multiple oil channels delivered more even heat across the room, creating comfortable, consistent warmth.

Read next: Best fan heater

2

Best budget oil-filled radiator

Kingavon 1500W 7-fin oil-filled radiator

What we like
  • Lightweight

  • Affordable price

  • Compact design

  • Economical to run

What we don't like
  • Only provides 1.5kW of heat (not suitable for larger rooms)

  • No digital timer

Key specs

Price on writing: £41 | Size: 45 x 40 x 30cm | Weight: 5.8kg | Heat settings: 600W/900W/1.5kW | Room coverage: 15–20 m² | Tip-over protection: Yes | Overheat protection: Yes | Adjustable thermostat: Yes | Cost per hour: Approximately 15- 39p p/h | Timer: No

Our verdict

If you’re after reliable warmth on a tight budget, the Kingavon 1500W 7-fin oil-filled radiator is our pick for the best affordable all-rounder. It’s compact, lightweight and easy to wheel from room to room, yet powerful enough to heat small to medium spaces quickly.

With three heat settings (600W, 900W and 1500W) and an adjustable thermostat, you can fine-tune the temperature to keep cosy without wasting energy. Reviewers say it’s “very good for heating a cold, north-facing room,” and it’s especially handy for home offices or bedrooms you don’t want to keep the central heating on for.

Simple manual controls, sturdy build and built-in safety cut-outs make it practical and family-safe. There’s no digital display or timer, but for the price, it’s a brilliant, energy-saving buy for spot heating. 

Read next: Best halogen heater

3

Best oil-filled radiator for large rooms

De’Longhi Dragon 4 2500W Oil-Filled Radiator

Top Tested
What we like
  • Chimney design for quick heat circulation

  • Powerful output ideal for large rooms

  • Timer and thermostat

What we don't like
  • Higher upfront cost

  • Heavy and less portable

Key specs

Price on writing: £219 | Size: 65 x 16 x 52cm | Weight: 17.5kg | Heat settings: 1.1kW, 1.4kW and 2.5kW | Room coverage: 75m² | Tip-over protection: | Overheat protection: Yes | Adjustable thermostat: Yes | Cost per hour: Approximately 28-65p p/h | Timer: Yes 

Our verdict

Tested by Mumsnet editor Poppy O'Neill: Read our in-depth De'Longhi Dragon 4 review

If you’re after some serious heat, the De'Longhi Dragon 4 is certainly the powerhouse of our bunch. With a 2500W output, its unique chimney design pushes warm air upward into the room to circulate faster, making it ideal for large, draughty spaces. 

Our tester Poppy put this oil-filled radiator to the test for six weeks in her home and noticed a clear difference in her living room temperature after just 10 minutes. Thanks to the adjustable thermostat, it turned off automatically once the room reached the target temperature.

Although it's heavy and the power cable could be longer, Poppy found the heat-proof handles and swivel castors made it easy to move between rooms when needed. She also rated the 24-hour timer, which, although complex to set up initially, allowed her to set the radiator to turn on and off at set times each day.

Read next: Best electric fireplace

4

Best small oil-filled radiator

De'Longhi 500W Nano Oil-Filled Radiator

What we like
  • Compact and easy to move

  • Lightweight

  • Extremely low running costs

  • Ideal for small rooms or offices

What we don't like
  • Not powerful enough for large rooms

Key specs

Price on writing: £83 | Size: 38 x 38 x 17cm | Weight: 5.3kg | Heat settings: 500W | Room coverage: 10-12m² | Tip-over protection: No | Overheat protection: Yes | Adjustable thermostat: Yes | Cost per hour: Approximately 14p p/h | Timer: No

What Mumsnet users say

Getupat8amnow · Recommended brand
We have a small 500W De'Longhi oil-filled radiator that we use in the living room. It throws out lots of heat for such a small radiator, it is easy to move round and the running costs are one quarter of a 2kW oil-filled radiator.
See Post
Our verdict

Small but mighty, the De'Longhi 500W Nano is perfect for keeping a single room toasty without touching the central heating. Compact and easy to move thanks to its lightweight design and carry handle, it’s ideal for home offices, nurseries or chilly corners. 

Despite its size, Mumsnetters say it “throws out lots of heat,” and it’s remarkably cheap to run (around a quarter of the cost of a 2kW model). It also features an adjustable thermostat and a built-in frost protection mode, so it’ll automatically kick in when the temperature drops. Whisper-quiet and well-built, it’s safe for family use with overheat protection for peace of mind.

5

Best oil-filled radiator with a timer

Morphy Richards HeatFlux Digital Oil Filled Radiator

Top Tested
What we like
  • Heats up fast enough to feel a difference within about 90 seconds

  • Compact shape fits neatly under a desk

  • Remote control

  • Timer and thermostat make it easy to set and forget

  • Wheels and handle make moving it between rooms straightforward

What we don't like
  • Remote doesn’t come with batteries

  • Not designed for larger rooms

Key specs

Price on writing: £100 | Size: 63 x 24.5 x 46.4 cm | Weight: 9.9kg | Heat settings: 1kW/1.5kW/2.5kW | Room coverage: Up to 25m² | Tip-over protection: No | Overheat protection: Yes | Adjustable thermostat: Yes | Cost per hour: Approximately 26-65 p p/h | Timer: Yes 

Our verdict

Tested by Mumsnet editor Poppy O'Neill: Read our full Morphy Richards HeatFlux review

If you’re trying to heat one chilly room without firing up the whole house, this is an easy radiator to live with. It warms up fast, and Mumsnet editor Poppy felt heat round her feet in about a minute and a half during testing, and the compact shape helps if you’re squeezing it into a home office or under a desk.

The timer and thermostat mean you can set it and leave it alone, and the remote is genuinely useful if you’re working or dealing with kids and don’t want to keep getting up to adjust it. It’s easy enough to move around too, thanks to the wheels and handle, and the heatproof handle is more useful than it sounds.

There are a couple of things to keep in mind. You’ll need batteries for the remote, and it’s not built for large spaces. If you’re trying to heat a big living room, this won’t cut it. But for a small or medium room you use all the time, especially a draughty home office, it does the job well and quickly feels worth having.

6

Best oil-filled radiator with a thermostat

John Lewis 2.5kW Oil-Filled Radiator

What we like
  • Three heat settings

  • Powerful 2.5kW will heat larger rooms

  • Has overheat protection

What we don't like
  • Slightly heavier than other models

  • Bulky design

Key specs

Price on writing: £100 | Size: 64 x 28 x 54.9cm | Weight: 12.6kg | Heat settings: Up to 2.5kW | Room coverage: Unspecified | Tip-over protection: Yes | Overheat protection: Yes | Adjustable thermostat: Yes | Cost per hour: Approximately 65p p/h | Timer: No 

Our verdict

Reliable, sturdy and sensibly priced, the John Lewis 2.5kW oil-filled radiator delivers consistent, comfortable warmth that easily rivals more expensive brands. With 11 fins and a powerful 2500W output, it quickly heats medium to large rooms. The adjustable thermostat lets you fine-tune the temperature to your liking, while the built-in safety cut-out and tip-over protection give peace of mind for households with kids or pets.

Although it doesn’t include a digital timer, it’s easy to operate, with simple controls that make it refreshingly fuss-free. The integrated carry handle and smooth-glide wheels make it easy to move, despite its sturdy build.

Mumsnetters love that it’s “very efficient and not expensive to run.” If you want a dependable radiator that heats big spaces evenly and safely without breaking the bank, this is an excellent buy.

How much does an oil-filled radiator cost to run?

Oil-filled radiators can be one of the most economical ways to heat a room. The exact running cost depends on the size and wattage of the radiator, how long it’s on for, and your electricity tariff. 

As a rough guide, a 2kW model costs around 50-55p per hour to run at full power (based on the average UK electricity rate of 26p per kWh). Smaller models, like a compact 500W oil-filled radiator, can cost as little as 14p per hour, and that’s more than enough for small bedrooms or home offices.

The clever thing about oil-filled radiators is that once the oil inside heats up, it stays warm for a long time. This means the unit doesn’t have to stay on constantly as the built-in thermostat switches it on and off to maintain the temperature, helping you use less energy overall. For the most efficient results, look for models with timers or eco modes so you can heat rooms only when needed. 

Can an oil-filled radiator heat a room?

Oil-filled radiators are designed to heat an entire room evenly and quietly, without drying out the air like fan heaters can. Once the oil warms up, it radiates heat across the space, maintaining a steady, comfortable temperature that lasts even after it’s switched off.

A smaller 500W to 1kW model will comfortably warm a box room or nursery, while larger radiators of around 2kW to 2.5kW  can tackle living rooms, playrooms, or open-plan areas with ease. Because they retain heat so well, they’re great for overnight use or for keeping rooms cosy for longer periods, such as during evenings or lazy weekends at home.

They’re also a much safer way of heating rooms than open-element heaters, as the oil is fully contained and the surface doesn’t get dangerously hot to touch. Built-in safety features like tip-over switches and overheat protection give extra peace of mind, making them a secure choice for family homes.

What’s the best oil-filled radiator to buy?

The best oil-filled radiator really depends on your space, budget, and how you plan to use it, but there are some standout models that Mumsnetters consistently rate highly.

For large spaces or draughty rooms, the De'Longhi Dragon 4 2500W is a top performer. It’s powerful, durable and trusted by users who’ve had theirs for years. It heats quickly and keeps the temperature steady, making it ideal for family living rooms or open-plan spaces.

If you’re after something more affordable, the VonHaus 9-fin oil-filled radiator is a fantastic all-rounder. It offers reliable heat, built-in safety features, and great value for money — perfect for everyday family use. Meanwhile, the Kingavon 1500W 7-fin radiator is praised for smaller rooms or home offices, combining portability with low running costs.

About the author

Poppy O'Neill is a Content Editor at Mumsnet and a mother of two. She researches and reviews the products Mumsnetters swear by, with a particular focus on laundry essentials like steam irons, clothes steamers and washing lines.

From a highly recommended retractable washing line to the best quiet fans money can buy, and Mumsnet's favourite dehumidifier to the steam generator iron that'll cut your ironing time in half, she loves to deep-dive into research and find the very best products on the market.