The Best Oil Heaters of 2025

Rating: 5

The Pro Breeze 2500W Oil Filled Radiator is a standout choice for those seeking efficient and reliable heating solutions. Its sleek white design, complemented by a black and silver control panel, adds a modern touch to any room. Weighing 8.3kg, it requires minimal assembly—just attaching the castor wheels, which takes under five minutes. Users appreciate its straightforward operation, thanks to large stainless steel-effect control knobs for temperature and thermostat adjustments. However, the timer function can be a bit fiddly, involving 96 segments representing 15-minute intervals each. Performance-wise, it heats up rapidly; within ten minutes, a 2m x 3m office feels warm and cozy, and it effectively warms larger rooms as well. With three temperature settings (1000W, 1500W, 2500W), it offers flexibility in energy consumption, costing approximately 73p per hour on the highest setting. Overall, its attractive design, ease of use, and powerful performance make it a top choice for heating large spaces.

— Olivia Smith

Rating: 5

The De’Longhi 2500W Dragon 4 is a robust and powerful oil-filled radiator, ideal for heating large and draughty rooms. Its encased body design not only gives it a contemporary appearance but also enhances its heating efficiency through a 'chimney design' that promotes rapid hot air flow. Weighing a substantial 17.52kg, it feels extremely durable. Assembly is straightforward, requiring only the extension of the wheels—no screwing necessary—though due to its weight, it might be a two-person job. The large control dials are user-friendly, but the timer dial, with its toothed segments representing 15-minute periods, may require good eyesight and dexterity to set accurately. In performance tests, it quickly heated both small offices and larger bedrooms, thanks to its three temperature settings (1000W, 1400W, 2500W). Running at maximum heat output costs approximately 73p per hour. Despite its higher price point and weight, its solid build and 10-year manufacturer warranty make it a worthwhile investment for those needing reliable heating.

— Michael Johnson

Rating: 4.9

The VonHaus 6 Fin 800W Oil Filled Radiator is a compact and budget-friendly option for those needing to heat smaller spaces. Its small size and lightweight design make it easily portable, and assembly is a breeze, taking less than a minute to slide the two feet into place. Operating it is straightforward, with a simple on/off button and a min/max thermostat dial. While it only offers one 800W heat setting, it's effective in heating small rooms or personal spaces. The lower wattage translates to lower energy usage, costing around 23p per hour to run. However, it lacks a timer function and may not be suitable for larger rooms or those requiring more powerful heating. Overall, it's an affordable and efficient choice for targeted heating needs.

— Michael Johnson

Rating: 4.8

The Dunelm 2000W Contemporary Round 9 Fin Oil Filled Radiator combines portability with powerful heating capabilities. Its rounded design and castor wheels make it easy to move around the house, and its slim profile allows for convenient storage. Assembly can be a bit tricky due to its rounded design, making it a two-person job, and requires a spanner not included in the package. The controls are basic yet user-friendly, featuring two dials for heat settings and temperature adjustment. With a 2000W power output, it heats up quickly and maintains a consistent temperature, effectively warming rooms of various sizes. However, its higher wattage means it costs around 50p per hour to run, placing it at the more expensive end of the spectrum. Despite the higher running costs, its portability and performance make it a solid choice for those needing flexible heating solutions.

— Isabella Wilson

Rating: 4.8

The De'Longhi TRNS0505M 500W Oil Filled Radiator is a great choice for those needing a small, energy-efficient heater for limited spaces. It is compact, lightweight, and easy to use straight out of the box with zero assembly required. The lower wattage means it has low energy consumption, costing around 14p per hour to run, making it one of the most cost-effective options. While it doesn’t have advanced settings or timers, it does a great job at providing consistent heat in small rooms or offices. However, it may not be sufficient for larger spaces. For those looking for a simple, no-fuss heating solution, this model offers reliability and affordability.

— Michael Johnson