Electric Radiators vs Electric Heaters: Key Differences
When it comes to choosing an efficient and cost-effective way to heat your home, the UK market offers a wide array of electric heating options. Two of the most common and widely confused products are electric radiators and electric heaters. Though they may sound similar, there are key differences in how they work, their energy efficiency, cost of operation and suitability for different room types.
In this article, we’ll explain everything you need to know about electric radiators vs. electric heaters to help you make an informed decision especially if you're considering an upgrade or trying to find a solution for energy efficient home heating in the UK.
1. What is an Electric Radiator?
An electric radiator is a wall mounted or freestanding unit that uses electricity to heat a fluid (such as oil or thermal fluid) or a metal heating element inside a sealed casing. This heat is then gradually released to warm the surrounding air and surfaces in the room via convection and radiant heat.
Electric radiators are considered primary heat sources and are commonly used as a direct alternative to gas central heating systems, particularly in properties without access to gas mains or where boiler installation is not feasible.
- Wall-mounted or portable design
- Can be programmable (via built-in thermostat or smart control)
- Even heat distribution
- Retains heat for longer periods
- Ideal for daily use in living rooms, bedrooms, or whole-house heating
- Energy-efficient options available (Lot 20 compliant in the UK)
2. What is an Electric Heater?
Electric heaters (often referred to as space heaters or fan heaters) are portable devices designed to produce quick heat using resistive heating elements. Many models use a fan to blow warm air into the room, providing almost instant warmth.
Electric heaters are typically used for temporary or supplementary heating, rather than full-time room heating.
Common Types of Electric Heaters:
- Fan Heaters
- Convector Heaters
- Infrared Heaters
- Halogen Heaters
- Oil-filled Portable Heaters
3. Key Differences Between Electric Radiators & Electric Heaters
| Feature | Electric Radiators | Electric Heaters |
|---|---|---|
| Heating Method | Radiant + convection | Primarily convection or fan-assisted |
| Efficiency | High (especially oil-filled or ceramic models) | Moderate to low |
| Heat Retention | Excellent | Poor |
| Installation | Wall-mounted (semi-permanent) | Portable |
| Control Options | Smart thermostat, WiFi | Basic or manual controls |
| Best For | Long-term heating | Spot/temporary heating |
| Energy Regulation | Lot 20 compliant | Not always compliant |
| Noise Level | Silent or minimal | Fan noise |
| Running Cost | Lower long-term | Higher long-term |
4. Energy Efficiency and Running Costs (UK-Specific)
With energy prices in the UK remaining a key concern, efficiency and cost are critical.
Electric radiators tend to be more energy-efficient due to:
- Better heat retention
- Smart controls that reduce energy waste
- Room-by-room zoning
- Slow cool-down time after turning off
Example:
A 2kW fan heater running for 3 hours/day may cost approx. £1.80/day.
A 1.5kW electric radiator with smart control may cost around £0.90/day.
5. Which One Should You Choose?
Choose Electric Radiators If:
- You want a permanent heating solution
- You prefer smart controls, thermostats, or timers
- You're heating larger rooms or full homes
- You want Lot 20 compliance
- Safety and silence are priorities
Choose Electric Heaters If:
- You need quick, temporary heat
- You're heating small or infrequent spaces
- You need a low-cost, portable solution
6. Electric Heating and UK Legislation (Lot 20)
In the UK, Lot 20 is an eco-design directive that mandates all new electric space heaters meet minimum efficiency standards. Most modern electric radiators comply, offering smart features and energy savings. Many cheaper electric heaters do not meet these requirements, leading to higher long-term costs.
7. Safety Considerations
Electric radiators are considered safer due to their design and lack of exposed heating elements. Electric heaters, especially fan or halogen models, require extra caution.
- Do not leave heaters unattended
- Keep flammable materials away
- Unplug when not in use
8. Final Thoughts: Making the Right Choice
While both electric radiators and electric heaters serve the purpose of indoor heating, their design and use case differ greatly. Electric radiators are ideal for long-term, safe, and energy-efficient heating. Electric heaters are better suited for short-term and mobile usage.
For most UK homes, especially those looking to reduce energy costs and increase heating performance, electric radiators offer the best return on investment.
Need help choosing the right electric radiator for your home?
Explore our wide selection of Lot 20 compliant, pre-filled and WiFi-enabled electric radiators specially curated for UK homes. Whether you need a bathroom friendly model or a powerful lounge unit, we’ve got the perfect solution waiting for you.
