Radiators have been the default in UK homes for decades. But electric underfloor heating is catching up fast, and for good reason. If you're renovating, building new, or just sick of cold spots and bulky radiators taking up wall space, here's an honest comparison of both options.
The Quick Comparison
| Underfloor Heating | Radiators | |
|---|---|---|
| Heat distribution | Heat is distributed through the fitted floor area; layout and construction affect the result | Heat distribution depends on radiator size, placement and room layout |
| Running cost | Calculate from fitted electrical load, tariff and actual on-time | Calculate from the same property's heat demand, boiler efficiency and tariff |
| Installation | Planning and mat laying can be DIY; qualified electrical design, testing and connection are required | Installer requirements depend on the radiator type and heat source |
| Maintenance | No moving parts in the mat; controls, connections and electrical protection still need appropriate care | Follow the servicing requirements for the selected heat source, emitters and controls |
| Warranty | AHT manufacturer cover | Check the selected boiler and radiator warranties |
| Wall space | Zero impact | Takes up wall space in every room |
| Warm-up time | Depends on floor construction, starting conditions and controls | Depends on system design, starting conditions and controls |
| Room control | Individual room zones | Control depends on the selected valves, zoning and schedule |
Heat Distribution
Radiators transfer heat to the room through convection and radiation. Their sizing, position and controls affect comfort, as do insulation, draughts and the room layout.
Underfloor heating warms the floor surface, which then transfers heat to the room. Comfort depends on floor temperature, room conditions and personal preference. Choose control settings for the property rather than assuming a fixed thermostat reduction compared with radiators.
Running Costs
Running cost depends on the fitted mat area, electricity tariff and actual thermostat on-time. At 150W/m², each square metre uses 0.15kWh for a full-power hour. Multiply that by your unit rate and measured or assumed on-time; an assumed duty cycle is a scenario, not a predicted bill.
Compare systems using the same property heat demand and your current energy tariffs. For a boiler system, include the actual system efficiency and obtain current servicing and replacement quotes; a generic annual figure is not a reliable comparison.
Electric underfloor heating can provide room-by-room control with suitable thermostats. Radiator systems can also use zoning and thermostatic valves. Compare the controls and comfort requirements of the proposed systems.
Try the numbers yourself: Use the EkoBuild running cost calculator to explore illustrative running-cost scenarios for your rooms.
Installation
Plan the exact floor construction, whole-mat layout, controls and electrical supply before installation. Do not cut the mats. Arrange a qualified electrician for electrical design, protection, testing, connection and commissioning, and follow the supplied fitting instructions and flooring manufacturer’s requirements.
Water-fed radiators need a suitable heat source, pipework and an installer. The heat source may be a boiler or heat pump, and the work and disruption depend on the existing system and proposed design. Electric radiators have different installation requirements.
Maintenance
Ribbon mats have no moving parts, but controls, electrical protection and the floor installation still need suitable checks and fault investigation. The supplied manufacturer warranty is subject to its stated conditions.
Maintenance needs depend on the specific boiler, heat pump, emitters and controls. Follow the equipment manufacturer’s servicing instructions and the requirements applicable to the property.
Space and Aesthetics
Underfloor heating frees wall space otherwise occupied by radiators. Furniture still needs planning: keep heated areas clear of solid-base furniture and other thermal blockers, and confirm sufficient clearance and free airflow beneath suitable raised furniture.
In smaller rooms like bathrooms and hallways, the space saved by removing a radiator can be significant. You get your walls back.
Comfort
A compatible heated floor can feel comfortable underfoot. Comfort and temperature distribution depend on the fitted layout, floor construction, room heat loss and controls. Underfloor heating does not remove building draughts or guarantee the absence of hot or cold spots.
Choose the heating for the property’s heat demand, floor construction and controls. EkoBuild does not establish a dust-reduction or allergy benefit for the Ribbon.
Check Room Heat Loss And Coverage
Ribbon can provide primary heating when the usable output from the fitted mats meets the room’s calculated heat loss at the permitted floor temperature. Around 70–80% useful coverage is a planning aim, not a pass/fail test. Confirm the complete heating design before removing existing heating.
If the fitted output is insufficient, review the layout, insulation or additional heating against the room’s heat loss. A coverage percentage alone does not determine whether an infrared panel is needed.
Use the Room Designer to plan your layout and check your coverage percentage.
When Radiators Still Make Sense
Electric underfloor heating isn't the right answer for every situation. If you have a very old, poorly insulated property with solid stone walls and no prospect of improving the insulation, radiators connected to a high-output boiler might still be the practical choice. The heat loss in those buildings can be too high for underfloor heating alone.
For any property age, compare the room-by-room heat loss, insulation, usable heated area, floor finish, energy tariffs and complete installation costs. The right heating choice depends on that assessment.
The Verdict
Ribbon can suit a low-profile retrofit and free wall space, with room control through suitable thermostats. Compare the complete proposed systems for your property: installed cost, available output, running costs, controls, maintenance and warranty conditions. Lower running costs, zero maintenance and a longer lifespan are not guaranteed.
The easiest way to start is a single room, so you can feel the difference before committing to a whole house.
Going deeper: whether it can be your only heating, what it costs to run.
See the Difference for Yourself
Start with one room or plan the whole house. We'll help you work out the best approach.