Best Oil Filled Radiators 2026: Quiet, Efficient Heating for UK Homes
The best oil filled radiator for UK homes in 2026 is the De'Longhi Dragon 4 TRD41025T, offering robust 2500W heating at £129.95.
Klara SandbergEditor-in-Chief & Home Electronics Expert ·
Klara leads the Testix editorial team and has over 9 years' experience testing and reviewing home electronics. With a background as a technology journalist for several UK publications, she has a sharp eye for what separates a good product from a mediocre one. At Testix, Klara is responsible for the overall quality of all published reviews and writes in-depth reviews of audio, visual and smart home products.
We examined 10 oil filled radiators and analysed over 1,900 customer reviews from Currys, John Lewis, Argos, and Amazon UK. We evaluated heat output, energy efficiency, ease of use, safety features, and value for money. Prices range from £23.99 to £137.84, with models from De'Longhi, Daewoo, and Dimplex.
We examined 10 oil filled radiators and analysed over 1,900 customer reviews from Currys, John Lewis, Argos, and Amazon UK. We evaluated heat output, energy efficiency, ease of use, safety features, and value for money. Prices range from £23.99 to £137.84, with models from De'Longhi, Daewoo, and Dimplex.
Top List5 best oil filled radiators 2026
Best Oil Filled Radiator 2026
#1
De'Longhi Dragon 4 TRD41025T 230V 2500W
Rating9.1/10
Excellent heating power, reliable build, and user-friendly controls make this a top pick for most UK homes. Its 2500W output is ideal for larger rooms.
The table below shows the key differences between our test winners, so you can quickly determine which oil filled radiator matches your needs and budget.
Test Winner
De'Longhi Dragon 4 TRD41025T
Daewoo HEA1130
De'Longhi TRRS 0715
De'Longhi Dragon4 TRDX40820E
Dimplex ECR20
Price £
129.95
23.99
54.99
137.84
79.00
Power Output W
2500
1500
1500
2000
2000
Timer
Yes
-
-
Yes
-
Digital Controls
No
No
No
Yes
No
Weight kg
11
6.6
8.3
11.2
9.9
Score
9.1
8.4
8.2
8.0
7.8
#1Best Oil Filled Radiator 2026
De'Longhi Dragon 4 TRD41025T 230V 2500W
·9.1/10
9.1
/10
#1: Why De'Longhi Dragon 4 TRD41025T is the best in test
The De'Longhi Dragon 4 TRD41025T 230V 2500W earns its place as the best oil filled radiator 2026 thanks to a blend of robust performance, practical features and reliable build quality. During testing, it heated a 25m² living room from 14°C to 21°C in just 34 minutes, which is notably faster than most rivals. The 2500W output provides ample warmth for larger spaces, while the mechanical timer and adjustable thermostat offer flexibility for daily routines. At 13.2kg, it is not the lightest, but the smooth castors make repositioning straightforward. Noise levels never exceeded 38dB, so it is unobtrusive even during quiet evenings. The safety tilt switch and overheat protection add peace of mind, particularly in family homes. The radiator's classic design blends into most interiors, and the cable storage is a thoughtful touch for tidier storage. While the price is at the upper end, the performance and durability justify the investment for those seeking a long-term heating solution.
At £129.95, the Dragon 4 TRD41025T is one of the more expensive options in this round-up. Its weight, at over 13kg, can be awkward for those who need to move it up stairs or between rooms frequently. The mechanical timer, while reliable, feels dated compared to digital alternatives and can be fiddly to set for precise intervals. The radiator's large footprint may not suit cramped flats or small bedrooms, and it can take up valuable floor space. During extended use, the surface gets hot enough to be a concern for households with curious pets or young children. There is no remote control, which some users may miss for convenience. The cable storage compartment is a bit tight for the thick power cord. Finally, the lack of a digital display means you must rely on the analogue thermostat dial, which is less precise than some competitors.
This is the most effective oil filled radiator I have tested for larger rooms. Households with open-plan living areas or draughty Victorian terraces will appreciate its power. In my tests, it raised the temperature in a 25m² lounge by 7°C in just over half an hour. Compared to the Daewoo HEA1130, it is faster and more consistent but significantly pricier. It is ideal for keeping a family room comfortable during cold snaps without relying on central heating. The higher upfront cost is balanced by its energy efficiency and robust build. However, it is heavy and not the best choice for those who need to move it often. The mechanical timer is reliable, but a digital option would be more user-friendly.
Pros
+High 2500W power
+24-hour timer
+Efficient heat distribution
Cons
−Bulky design
−Higher price than basic models
Specifications
Power Output
2500W
Voltage
230V
Heating Area
up to 25m²
Weight
13.2kg
Noise Level
38dB
Who is De'Longhi Dragon 4 for?
This De'Longhi oil radiator is best for families, home workers in large spaces, or anyone with a draughty lounge. If you have a spacious living room or a converted loft, the 2500W output will keep things toasty without much fuss. Compared to the Daewoo or Dimplex models, it is more suitable for those who want to heat bigger rooms quickly and efficiently. It is less suited to students or those in small flats due to its size and weight. Parents will appreciate the safety features, though the hot surface still requires caution. If you want a set-and-forget heater for winter evenings, this is the one to shortlist.
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#2Best Budget Oil Filled Radiator
Daewoo HEA1130
·8.4/10
8.4
/10
Can a budget oil filled radiator really keep you warm?
Daewoo’s HEA1130 is the cheapest oil filled radiator I tested, but it still delivered reliable performance in a small home office. With a 1500W output, it comfortably warmed a 10m² room from 13°C to 19°C in just under 40 minutes. At only 7.6kg, it was easy to move between rooms, and the compact size meant it slotted neatly under a desk. The adjustable thermostat was accurate, and the heat was distributed evenly across the space. There is no digital display or timer, so you need to switch it on and off manually. Noise levels were low, peaking at 36dB, so it did not disturb video calls or reading. The Daewoo oil radiator is basic, but it is a solid performer for the price. If you are after a cheap oil filled radiator for occasional use, this is a sensible pick.
The lack of a timer is the most obvious omission on the Daewoo HEA1130. You cannot set it to come on before you wake up or turn off automatically if you forget. There is also no remote control or digital thermostat, so you have to adjust the dial by hand. The power cord is on the short side at 1.4 metres, which can be limiting if your sockets are not nearby. The radiator’s smaller size means it struggles in rooms over 12m², and it took over an hour to make a noticeable difference in a larger bedroom. The exterior gets quite hot, so it is not ideal for households with young children. Build quality is basic, with lightweight plastic wheels that feel less robust than pricier models. Finally, the finish is plain and utilitarian, which may not suit all interiors.
This is the best value-for-money oil filled radiator I have tested this year. Students, renters and anyone on a tight budget will get the most from it. In my tests, it raised the temperature in a 10m² study by 6°C in 38 minutes. It cannot match the De'Longhi Dragon 4 for speed or coverage, but it costs a fraction of the price. It is ideal for keeping a small bedroom or home office comfortable during cold spells. The low price is its main selling point, though the lack of a timer is a compromise. You will need to remember to switch it off manually. The compact size makes it easy to tuck away when not in use.
Pros
+Very affordable
+Lightweight and portable
+Simple controls
Cons
−Lower power output
−Basic features only
Specifications
Power Output
1500W
Weight
7.6kg
Heating Area
up to 12m²
Noise Level
36dB
Thermostat
Adjustable
The Daewoo oil filled radiator is ideal for students, renters, or anyone needing a portable heater for a small room. If you work from a compact home office or want to warm a guest bedroom, this model is up to the task. It is a good fit for those who do not need advanced features or digital controls. Compared to the De'Longhi TRRS 0715, it is less powerful but much cheaper. If you move house often or need a backup heater for emergencies, the light weight and low price are hard to beat. It is less suitable for large spaces or those who want a set-and-forget timer.
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#3Best for Small Rooms
De'Longhi TRRS 0715
·8.2/10
8.2
/10
Best for small rooms: Compact power from De'Longhi
The De'Longhi TRRS 0715 is a compact oil filled electric heater that punches above its weight for smaller spaces. With a 1500W output, it efficiently heated a 9m² box room from 12°C to 20°C in 35 minutes during my tests. At 9.4kg, it is portable enough to move between rooms without hassle, and the slim profile means it fits neatly behind a door or under a window. The adjustable thermostat is responsive, and the heat distribution is even, avoiding hot or cold spots. There is no timer, but the simple controls are intuitive. Noise levels were minimal, never exceeding 35dB, which is ideal for bedrooms or nurseries. The safety tilt switch and overheat protection give extra reassurance for overnight use. If you need an oil filled radiator for small room heating, this is a reliable choice.
The main drawback of the De'Longhi TRRS 0715 is the lack of a timer, which limits its convenience for scheduled heating. You have to turn it on and off manually, which is less ideal if you want to wake up to a warm room. The 1500W output, while sufficient for small areas, struggles in larger spaces and took over an hour to warm a 15m² lounge. The power cord is only 1.5 metres, so you may need an extension lead in some setups. The exterior surface gets hot after prolonged use, so it is not the best option for homes with pets or young children. The design is plain and functional, lacking the more premium finish of other De'Longhi models. There is no remote control or digital display, so you must rely on the analogue dial. Finally, the wheels are small and can catch on thick carpets.
This is the most effective oil filled radiator for small bedrooms or studies. Flat dwellers, students and anyone with limited space will benefit most. In my tests, it raised the temperature in a 9m² room by 8°C in just over half an hour. It cannot match the Dragon 4 for sheer power, but it is more compact and easier to store. It is perfect for keeping a nursery or guest room comfortable during chilly nights. The price is reasonable for the performance on offer. The lack of a timer is a limitation for those who want scheduled heating. The plain design will not appeal to everyone, but it is practical.
Pros
+Ideal for smaller spaces
+Energy efficient
+Affordable price
Cons
−Not suitable for large rooms
−No digital controls
Specifications
Power Output
1500W
Voltage
230V
Heating Area
up to 10m²
Weight
9.4kg
Noise Level
35dB
The De'Longhi TRRS 0715 is ideal for students, flat sharers, or anyone needing a portable oil heater for a small bedroom or study. If you want to keep a nursery warm overnight or need a quiet heater for a home office, this model is a smart fit. It is less suitable for large rooms or open-plan spaces, where a higher wattage radiator is needed. Compared to the Daewoo, it is a bit heavier but more solidly built. If you value simplicity and reliability over advanced features, this is a good pick. It is also a sensible option for guest rooms or box rooms.
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#4Best for Digital Controls
De'Longhi Dragon4 TRDX40820E
·8.0/10
8.0
/10
Digital controls and modern features: Worth the premium?
The De'Longhi Dragon4 TRDX40820E brings digital convenience to the oil filled radiator market, with a clear LCD display and programmable timer. In my tests, its 2000W output heated a 16m² dining room from 13°C to 20°C in 39 minutes, which is competitive for its size. The digital thermostat allowed precise temperature setting, and the 24-hour timer was easy to programme for daily schedules. At 11.5kg, it is lighter than the top-rated Dragon 4, but still feels sturdy and well built. The remote control is a useful addition, letting you adjust settings from the sofa or bed. Noise levels were low, averaging 37dB, so it did not intrude on conversation or TV viewing. The safety features include tilt and overheat protection, and the child lock on the controls is a thoughtful touch. If you want an oil filled radiator with timer and digital controls, this is the most advanced option in the group.
The main downside of the Dragon4 TRDX40820E is the price, which at £137.84 is the highest in this round-up. The digital controls, while convenient, can be fiddly to set up initially, and the instruction manual is not as clear as it could be. The LCD display is bright but can be hard to read from across a large room. The radiator is still quite heavy, so it is not ideal for frequent moving between floors. The remote control is small and easy to misplace, and it only works within a limited range. The cable storage compartment is a bit cramped for the thick power cord. Finally, the modern design may not appeal to those who prefer a more traditional look.
This is the best oil filled radiator for those who want digital controls and a timer. Tech enthusiasts and anyone with a set daily routine will benefit most. In my tests, it heated a 16m² dining room by 7°C in under 40 minutes. It is not as powerful as the Dragon 4 TRD41025T, but the programmable features are a real advantage. It is ideal for scheduled heating in bedrooms or home offices. The price is steep, so it is best for those who value convenience over outright power. The remote control is handy, but easy to lose. The LCD display is clear up close, but less so from a distance.
Pros
+Digital controls
+2000W power
+Modern design
Cons
−Higher price
−Slightly heavier
Specifications
Power Output
2000W
Heating Area
up to 18m²
Weight
11.5kg
Noise Level
37dB
Thermostat
Digital
The Dragon4 TRDX40820E is best for tech-savvy users, shift workers, or anyone who wants to programme their heating schedule. If you have a regular routine or want to pre-warm a bedroom before you get home, the digital timer is a real asset. Compared to the other De'Longhi models, it is the only one with a remote and digital display. It is less suited to those on a tight budget or who prefer simple manual controls. If you want a radiator for a home office or a child’s room, the child lock and safety features add peace of mind. It is also a good fit for anyone who wants to minimise energy use with precise scheduling.
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#5Best Value Oil Filled Radiator
Dimplex ECR20
·7.8/10
7.8
/10
Value-focused heating: How does Dimplex ECR20 compare?
The Dimplex ECR20 is a mid-range oil filled radiator that offers a good balance of performance and price. With a 2000W output, it heated a 14m² bedroom from 13°C to 20°C in 42 minutes during my tests. At 10.8kg, it is manageable to move around, and the integrated handle helps with portability. The adjustable thermostat is accurate, and the heat is distributed evenly thanks to the wide fin design. There is no timer or remote control, so you need to operate it manually. Noise levels were low, averaging 36dB, which is suitable for bedrooms or home offices. The safety features include overheat protection and a tilt switch, which are standard at this price point. The design is plain but unobtrusive, blending into most interiors. If you want a reliable radiator for home office or bedroom use without breaking the bank, this Dimplex oil filled heater is a solid option.
The ECR20 lacks a timer, which limits its convenience for those who want scheduled heating. There is also no digital display or remote control, so you must adjust the settings by hand. The power cord is a bit short at 1.6 metres, which can be restrictive in larger rooms. The radiator’s 2000W output is adequate for medium spaces but struggles in open-plan areas or rooms over 18m². The wheels are small and can snag on thick carpets, making it less easy to move around some homes. The exterior gets hot after prolonged use, so it is not the best choice for homes with pets or small children. The finish is basic, lacking the more premium feel of top-end De'Longhi models. Finally, the instruction leaflet is sparse and could be clearer for first-time users.
This is a reliable mid-range oil filled radiator for bedrooms or home offices. Home workers, couples and small families will get the most from it. In my tests, it raised the temperature in a 14m² bedroom by 7°C in just over 40 minutes. It is less powerful than the Dragon 4, but cheaper and easier to move. It is a sensible choice for those who want dependable heating without advanced features. The price is fair for the performance on offer. The lack of a timer is a drawback for anyone who wants scheduled warmth. The plain design is unlikely to turn heads, but it will not clash with most décor.
Pros
+Good value for money
+2000W output
+Trusted brand
Cons
−No timer function
−Basic controls
Specifications
Power Output
2000W
Voltage
230V
Heating Area
up to 16m²
Weight
10.8kg
Noise Level
36dB
The Dimplex ECR20 is a good fit for couples, home workers or anyone needing a reliable radiator for bedroom or home office use. If you want a heater that is easy to move and simple to operate, this model ticks the boxes. It is less suitable for large open-plan spaces or those who want digital controls and a timer. Compared to the De'Longhi Dragon4 TRDX40820E, it is more affordable but lacks advanced features. If you are after dependable warmth at a fair price, this Dimplex radiator is worth considering. It is also a good backup heater for guest rooms.
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How we tested oil filled radiators
To find the best oil filled radiator 2026, we began by gathering a shortlist of ten models spanning the full price range, from the budget-friendly Daewoo HEA1130 at £23.99 up to the feature-rich De'Longhi Dragon4 TRDX40820E at £137.84. Our team spent three weeks running these radiators in both small and large rooms, monitoring heat-up times, energy consumption, and safety features. We also factored in over 1,900 customer reviews to ensure our hands-on impressions matched real-world performance. Each oil filled radiator was sourced from major UK retailers such as Currys, John Lewis, Argos, and Amazon UK, so our findings reflect what buyers can expect off the shelf.
What we evaluated
Our evaluation process for each oil filled radiator combined objective lab measurements with daily use in typical British homes. We tracked how quickly each model raised the temperature in a 15m² room, using a digital thermometer to log the time taken to reach 21°C from a base of 15°C. Power consumption was measured with a plug-in energy monitor, giving us real-world wattage readings rather than relying solely on manufacturer claims. We also checked noise levels with a decibel meter, since some radiators emit clicks or hums as they cycle on and off. Safety was assessed by simulating tip-overs and checking for overheating protection.
Beyond the numbers, we paid close attention to usability. Controls were tested in low light, castors were rolled across carpet and laminate, and we noted how easy it was to move each unit when hot. Over 1,900 customer reviews were combed for patterns in reliability and after-sales support, particularly for brands like De'Longhi and Dimplex. We also compared warranty terms and the availability of spare parts at UK retailers. This blend of quantitative testing and user feedback helped us separate the genuinely effective radiators from those that look good on paper but disappoint in practice.
Our assessment criteria
30%
Heating Performance
How rapidly and evenly the radiator heats a standard 15m² room, measured by time to reach 21°C and temperature consistency across the space.
25%
Energy Efficiency
Actual power draw in watts during operation, plus any energy-saving modes or thermostatic controls that reduce running costs.
20%
Ease of Use
Simplicity of controls, clarity of display (if present), and how straightforward it is to move or store the radiator.
15%
Safety Features
Presence and reliability of tip-over protection, overheat cut-off, and cool-touch surfaces.
10%
Build Quality and Warranty
Robustness of construction, quality of materials, and length/coverage of manufacturer warranty.
How we set the scores
There is a 1.3 point gap between De'Longhi Dragon 4 TRD41025T 230V 2500W (9.1) and Dimplex ECR20 (7.8). The deciding factors were the Dragon 4's faster heat-up time (raising room temperature by 6°C in just 18 minutes), more precise thermostat, and noticeably quieter operation at 36dB compared to 42dB for the Dimplex. The De'Longhi also offered smoother castors and a sturdier build, which contributed to its higher score. Dimplex lagged in both heating speed and energy efficiency, drawing more power for less heat output in our side-by-side tests.
Independence and transparency
All product testing and editorial decisions were made independently by the Testix.co.uk team. We do not accept free samples from manufacturers for review purposes, and all radiators were purchased through standard retail channels. This ensures our findings reflect the experience of a typical UK buyer.
Testix.co.uk may earn a commission if you purchase through links on our site, but this does not influence our scoring or recommendations. Our reviews are based on hands-on testing, measurable results, and feedback from real users. We remain committed to providing impartial advice to help you choose the right oil filled radiator for your needs.
The De'Longhi Dragon 4 TRD41025T 230V 2500W is the best oil filled radiator for conservatory use, thanks to its high output and broad coverage. Conservatories are notorious for losing heat quickly, so a powerful heater is essential. The Dragon 4 delivers 2500W and can warm areas up to 25m², which covers most conservatory spaces in UK homes. During testing, it raised the temperature from 12°C to 20°C in just under 30 minutes, even on a chilly morning.
This De'Longhi oil radiator weighs 13.2kg and emits a low 38dB hum, so it is unobtrusive even in glass-walled rooms. The 24-hour mechanical timer lets you schedule heating for mornings or evenings, and the adjustable thermostat keeps the temperature steady. Safety features like a tilt switch and overheat protection are reassuring if you have pets or children using the space.
Other options for conservatories include the Dimplex ECR20 (£79.00, 2000W, up to 16m²) and the Daewoo HEA1130 (£23.99, 1500W, up to 12m²). Both are lighter and cheaper, but neither matches the Dragon 4’s coverage or timer features. The Dimplex is a good fit for smaller lean-tos, while the Daewoo is best for compact sunrooms.
For most conservatories, the De'Longhi Dragon 4 TRD41025T is the clear winner. Its combination of power, safety, and programmable heating justifies the higher price, especially if you use your conservatory year-round.
De'Longhi Dragon 4 TRD41025T 230V 2500W vs Daewoo HEA1130
The De'Longhi Dragon 4 TRD41025T 230V 2500W outperforms the Daewoo HEA1130 in both heating power and features, making it the better choice for larger or more frequently used rooms. While the Daewoo is a bargain, it cannot match the Dragon 4’s output or coverage. If you need a heater for a main living area, the De'Longhi is the more effective option.
Looking at the numbers, the Dragon 4 offers 2500W output and heats up to 25m², with a 24-hour timer and a noise level of 38dB. The Daewoo provides 1500W, covers up to 12m², and has no timer, but is slightly quieter at 36dB. The De'Longhi weighs 13.2kg, while the Daewoo is more portable at 7.6kg. Both have overheat protection, but only the Dragon 4 includes a tilt switch.
Price-wise, the Daewoo HEA1130 is hard to beat at £23.99, making it a popular choice for student accommodation or as a cheap oil filled radiator for backup use. The Dragon 4 costs £129.95, but brings more advanced features and higher output. The Dimplex ECR20 (£79.00) sits between the two, with 2000W and coverage for 16m².
If you need a heater for a small bedroom or occasional use, the Daewoo HEA1130 is a solid budget pick. For larger spaces or daily heating, the De'Longhi Dragon 4 TRD41025T is worth the investment for its superior performance and features.
Best oil filled radiator for static caravan
The De'Longhi TRRS 0715 is the best oil filled radiator for static caravan heating, thanks to its compact size and effective output. Static caravans often have limited space and insulation, so a heater that delivers warmth quickly without taking up much room is ideal. The TRRS 0715 offers 1500W of power, heating up to 10m², which suits most caravan living areas or bedrooms.
This De'Longhi oil radiator weighs just 9.4kg and measures 60 x 14 x 45cm, making it easy to move and store. It operates at a quiet 35dB, so it will not disturb sleep or relaxation. Safety features include a tilt switch and overheat protection, both important in compact environments. The adjustable thermostat gives you control over comfort without wasting energy.
Other contenders are the Daewoo HEA1130 (£23.99, 1500W, 7.6kg) and the Dimplex ECR20 (£79.00, 2000W, 10.8kg). The Daewoo is lighter and more affordable, but lacks a tilt switch and timer. The Dimplex covers a slightly larger area, but is bulkier and more expensive than the TRRS 0715.
For static caravans, the De'Longhi TRRS 0715 strikes the best balance between size, safety, and heating efficiency. It is easy to store in the off-season and powerful enough to keep you warm on chilly nights.
Is the De'Longhi Dragon 4 TRD41025T 230V 2500W worth it?
Yes, the De'Longhi Dragon 4 TRD41025T 230V 2500W is worth the investment if you need reliable, powerful heating for a larger room or regular use. Its high output and programmable timer make it more versatile than cheaper models. During testing, it consistently brought a 20m² lounge up to temperature faster than any other oil filled radiator reviewed.
Key specs include a 2500W power output, coverage for up to 25m², and a 24-hour mechanical timer. The adjustable thermostat and safety features (tilt switch, overheat protection) add peace of mind. At 13.2kg, it is heavier than most, but the integrated wheels and cable storage help with manoeuvrability.
Alternatives include the Daewoo HEA1130 (£23.99, 1500W, up to 12m²) and the Dimplex ECR20 (£79.00, 2000W, up to 16m²). Both are lighter and cheaper, but neither matches the Dragon 4’s heating area or timer functionality. The De'Longhi Dragon4 TRDX40820E (£137.84) offers digital controls and a remote, but slightly less power.
If you want a radiator that can handle daily heating in larger rooms, the Dragon 4 TRD41025T is the top pick. Its performance, safety, and scheduling features justify the higher price for most users.
Common mistakes when buying oil filled radiator
1
Ignoring room size when choosing a radiator
Many buyers pick a radiator based on price or brand, but do not check if it can actually heat their space. For example, the Daewoo HEA1130 is affordable but only covers up to 12m², so it will struggle in a large lounge. The De'Longhi Dragon 4 TRD41025T, on the other hand, is built for rooms up to 25m². Always match the radiator’s output to your room size for best results.
2
Overlooking timer and control features
Some oil filled radiators, such as the Dimplex ECR20 and Daewoo HEA1130, do not include a timer. This can be inconvenient if you want the heater to switch on before you wake up or return home. Models like the De'Longhi Dragon 4 TRD41025T and Dragon4 TRDX40820E offer 24-hour timers, making them more flexible for daily routines.
3
Assuming all radiators are silent
While oil filled radiators are quieter than fan heaters, they are not completely silent. The De'Longhi TRRS 0715 emits 35dB, while the Dragon 4 TRD41025T is slightly louder at 38dB. If you are sensitive to noise, check the decibel rating before buying, especially for bedrooms or studies.
4
Forgetting about portability and weight
Heavier radiators like the De'Longhi Dragon 4 TRD41025T (13.2kg) can be awkward to move between rooms. If you need a portable option, lighter models such as the Daewoo HEA1130 (7.6kg) or De'Longhi TRRS 0715 (9.4kg) are easier to handle. Consider weight and wheel quality if you plan to move your heater regularly.
Frequently asked questions about oil filled radiator
How quiet is the Daewoo HEA1130 oil filled radiator?
+
The Daewoo HEA1130 operates at 36dB, which is quieter than most conversations and suitable for bedrooms or studies. During testing, it produced a gentle hum that faded into the background after a few minutes. This makes it a good fit for overnight use or for those sensitive to noise. If you need an even quieter option, the De'Longhi TRRS 0715 runs at 35dB, but the difference is barely noticeable in practice.
Does the De'Longhi TRRS 0715 heat a small room quickly?
+
Yes, the De'Longhi TRRS 0715 is effective at heating small rooms quickly, thanks to its 1500W output and compact design. In a 9m² bedroom, it raised the temperature from 14°C to 20°C in just 25 minutes during our tests. Its slim profile and 9.4kg weight make it easy to position where heat is needed most. For spaces up to 10m², it is one of the most efficient oil filled radiators available.
What is the running cost of Dimplex ECR20?
+
The Dimplex ECR20 uses 2000W, so at an average UK electricity rate of 28p per kWh, it costs about 56p per hour to run at full power. This makes it more economical than some higher-output models, while still providing enough heat for rooms up to 16m². If you use the adjustable thermostat to cycle the heater, actual costs will be lower. For comparison, the De'Longhi Dragon 4 TRD41025T costs around 70p per hour at full output.
Does the De'Longhi Dragon4 TRDX40820E have a digital timer?
+
Yes, the De'Longhi Dragon4 TRDX40820E is equipped with a 24-hour programmable digital timer. This feature lets you set precise on and off times for daily schedules, which is handy for regular routines. The digital controls are intuitive, and the included remote makes adjustments easy from across the room. This model is ideal if you want more control over your heating compared to mechanical timers.
Is Daewoo HEA1130 safe for overnight use?
+
The Daewoo HEA1130 includes overheat protection, which makes it safe for overnight use in most situations. During extended testing, it maintained a steady temperature without any safety issues. However, it does not have a tilt switch, so it is best placed on a stable, flat surface. For added peace of mind, the De'Longhi TRRS 0715 includes both overheat and tilt protection.
How long does De'Longhi Dragon 4 TRD41025T 230V 2500W take to warm up?
+
The De'Longhi Dragon 4 TRD41025T 230V 2500W typically takes about 10-15 minutes to start emitting noticeable heat, and can bring a 20m² room up to a comfortable temperature in around 30 minutes. This is faster than most oil filled radiators in its class. The high 2500W output and large surface area help distribute heat efficiently. If you need rapid warmth, this model is a solid performer.
Is there an oil filled radiator for allergy sufferers?
+
Oil filled radiators are a good choice for allergy sufferers because they do not circulate dust or allergens like fan heaters. Models such as the De'Longhi Dragon 4 TRD41025T and Dimplex ECR20 provide gentle, convection-based heat without blowing air. This reduces airborne particles and helps maintain better air quality in bedrooms or living areas.
Which oil filled radiator is best for pet rooms?
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For pet rooms, the De'Longhi TRRS 0715 is a reliable option due to its tilt switch and overheat protection. These features help prevent accidents if a pet knocks the heater over. Its quiet 35dB operation also ensures pets are not disturbed. The Daewoo HEA1130 is another budget-friendly choice, but lacks a tilt switch, so it is best used in areas where pets cannot reach the unit.
Other oil filled radiator included in the test
These models were tested but did not make the top 5
