The Dimplex OFRB7N is a 700W oil-free mini radiator designed to take the chill off smaller rooms quickly and efficiently. As a well-known heating brand, Dimplex aims this model squarely at people who want a reliable top-up heater rather than a full-blown portable radiator.
With its compact footprint and carry handle, it is built to move easily between rooms, making it ideal for home offices, box rooms or as a spot heater beside a sofa. The patented oil-free technology promises quicker warm-up and lower energy use than traditional oil-filled radiators.
A strong user rating of 4.8 out of 5 from dozens of reviews suggests owners are very happy with its performance, simplicity and build quality at this price point.
The Dimplex OFRB7N is best suited to anyone needing targeted warmth in a small area, such as a home office, spare bedroom or snug. At 700W it is not designed to heat large, open spaces, but it excels at keeping smaller rooms comfortable without having to fire up the main central heating.
It is a good fit if you are working from home and want a reliable heater under the desk or beside your chair. The compact size and unobtrusive white finish mean it will tuck neatly into corners without dominating the room.
Budget-conscious buyers will appreciate that this is a straightforward, plug-in-and-go heater with no complicated controls. The single heat setting and simple thermostat make it ideal for those who want something they can set once and forget, rather than constantly tweak.
It also suits more cautious users who prioritise safety and reliability. The oil-free design reduces the risk of leaks, and the built-in safety cut-out and frost protection give extra peace of mind if it is left in a conservatory, hallway or guest room over colder months.
The oil-free design is the standout benefit here. It heats up noticeably faster than traditional oil-filled radiators, so you feel the warmth sooner after switching it on, and the technology can be more efficient, helping to trim running costs when used sensibly.
Its compact dimensions (around 45cm high) and portable design make it easy to carry from room to room. If you often move between a home office, bedroom and living room, having a lightweight heater you can simply pick up and plug in is a real advantage.
The thermostatic control is refreshingly simple. Rather than lots of modes, there is a clear on/off switch and a rotary dial to set your desired temperature, which helps maintain a comfortable level of heat without constant fiddling.
Safety features are solid for a heater at this level. The overheat safety cut-out and frost protection setting are particularly useful if you intend to leave it in colder areas like porches, loft rooms or garden offices.
Finally, the three-year manufacturer warranty is generous for a compact heater, reinforcing the impression that this is a well-made product designed to last.
With a 700W output, this model is intentionally modest in power. In larger rooms or draughty spaces it will only ever be a supplementary heater, not a primary heat source, so anyone wanting to warm a big living room should look for something more powerful.
There is only one heat setting. While the thermostat helps regulate room temperature, some users may miss having multiple fixed power levels to fine-tune how quickly the room warms up.
There is no built-in timer or programmable schedule. If you like your heater to come on before you wake up or get home, you will need an external plug-in timer to add that functionality.
You also do not get a remote control or fancy digital display. Many people will see the simplicity as a plus, but if you prefer more advanced controls and smart features, this will feel basic compared with some rivals.
Day to day, the Dimplex OFRB7N is about as uncomplicated as a heater gets. It arrives ready to use with a fitted plug, so you just position it, plug it in and switch it on. The compact footprint and relatively low height make it easy to slot beside a desk, under a window or near a chair.
The single control dial is intuitive: turn it up to warm the room quickly, then gently back it off once you reach a comfortable temperature. The built-in thermostat then works to maintain that temperature, cycling the heater on and off as needed. There are no menus or modes to learn, which is ideal if you are buying this for someone who values simplicity.
Because it is oil-free, it comes up to temperature quickly, so you are not left waiting long for the chill to lift. Once warm, it gives off a steady, gentle heat rather than an intense blast, which tends to feel more comfortable for prolonged use, particularly in a home office or bedroom.
The lack of cable storage is a minor niggle, as the power cord can look a little untidy when the heater is not in use. However, its small size and light weight mean it is easy to pick up and move to a cupboard or different room when you are done.
At 700W, the OFRB7N is clearly designed for smaller rooms, and within that brief it performs very well. The oil-free technology is a genuine advantage: the internal elements heat up rapidly and start radiating warmth into the room sooner than a comparable oil-filled model, which has to warm up its oil mass first.
The single heat setting simplifies operation, with the thermostat doing the fine-tuning. Set it to a comfortable level and the heater will cycle to hold roughly that temperature, avoiding the too hot/too cold swings you often get with very basic plug-in heaters. This is especially handy for maintaining a stable working environment in a home office.
Frost protection is a thoughtful extra. If you leave the radiator in a conservatory, garage room or holiday home, the frost protect function helps stop the temperature dropping too low, offering basic protection for plants, pipes or stored items during colder snaps.
On the safety front, the automatic safety switch-off adds an important layer of reassurance, cutting power if the unit overheats or tips. Combined with the sealed, oil-free design, it makes this a sensible option for family homes and busy spaces.
Feature-wise it is deliberately minimalist: there is no timer, remote control, or smart connectivity. The trade-off is a robust, easy-to-use heater that focuses on core performance rather than bells and whistles. If you want more control, pairing it with a plug-in timer is an easy upgrade.
At £60, the Dimplex OFRB7N sits in an accessible price bracket for a branded oil-free radiator. You are paying a little more than for the very cheapest fan heaters or basic convectors, but you gain faster warm-up than oil-filled rivals, a more comfortable radiant heat, and a trusted name in electric heating.
Considering the three-year manufacturer warranty and the strong 4.8 out of 5 user rating, it represents solid value for buyers who specifically need a compact, efficient top-up heater. The running costs will depend on how you use it, but the efficient oil-free design and thermostat can help avoid wasting energy when compared with leaving larger, higher-wattage heaters running.
If you are trying to heat a sizeable room, you may find better value in stepping up to a more powerful model. But for small spaces, home offices and occasional use, the balance of quality, features and price is very fair.
The Dimplex OFRB7N is a well-executed small-space heater that plays to Dimplex’s strengths: solid build quality, simple controls and effective, efficient heating. Its oil-free technology, quick warm-up and compact size make it an excellent choice for home offices, spare rooms and anyone wanting targeted warmth without overcomplicating things.
It is not the right pick if you need to heat a large living area or you are looking for advanced features like timers, remote control or smart connectivity. The single heat setting and 700W output keep it firmly in the supplementary-heating camp.
For those who understand its limitations and want a no-fuss, reliable and efficient small radiator from a recognised brand, it is an easy product to recommend. Pair it with a plug-in timer if you want extra convenience, and it will serve as a dependable winter companion for years to come.
