300w Electric Radiators | Perfect for Small Spaces
Looking for a compact, energy-efficient electric radiator for a small room? Our 300w electric radiators are ideal for bathrooms, hallways, landings, and other small spaces where you need reliable, controllable warmth without oversizing your heating. At just 300 watts, these radiators are perfectly matched to rooms up to approximately 3m², making them one of the most economical options in our range.
All our 300w radiators plug into a standard 13A supply — no complex installation, no plumber required. Simply mount on the wall using the supplied brackets and you’re ready to go. With precise thermostatic control and built-in safety features as standard, you get consistent, comfortable heat exactly where you need it.
Browse our 300w electric radiator range below, or use our Electric Heating Calculator to confirm this is the right output for your room.
Towel Rail (Chrome) 300w
300w Heats up to 3m²In stock
Original price was: £330.00.£165.00Current price is: £165.00.
or £55.00interest-free for 3 monthsAre 300w Electric Radiators Right for You?
A 300w electric radiator is the smallest output in our range and is specifically designed for compact, well-insulated spaces. As a general guide, 300 watts is suitable for rooms up to around 3m² — think a small en-suite bathroom, a WC, a utility cupboard, or a narrow hallway.
Because electric radiators are 100% efficient at the point of use, every watt you pay for becomes heat in your room. There is no wasted energy through pipework or a central boiler, and with individual room control, your 300w radiator only runs when and where you need it.
Will a 300w radiator be enough? If your room is slightly larger, poorly insulated, or has a high ceiling, you may need to step up to a 400w or 500w model. We always recommend using our Electric Radiator Size Calculator before purchasing to make sure you get the right output first time. Our team is also happy to advise — call us on 0113 239 9919 or drop us an email at sales@electricradiatorshop.co.uk.
Easy to install, simple to control Our 300w radiators are wall-mounted and connect to a standard 13A socket or fused spur. No plumbing, no specialist tools. Most customers have their radiator up and running within an hour.
Free UK delivery on all orders Every 300w electric radiator in our range is available with fast, free delivery across the UK. All products come with a manufacturer's warranty, and our UK-based support team is here if you need help before or after your purchase.