Far Infrared Heating Film – Principles of Operation

Efficient Far Infrared Heating Film for Targeted Surface Heating

Far infrared heating film is a modern electric heating technology designed to deliver efficient and comfortable radiant heat. Unlike conventional heating systems that warm the air first, infrared heating systems transfer heat directly to people, objects, and surfaces within a room.

This method of heating is similar to the natural warmth of sunlight. Instead of circulating hot air, infrared radiation warms walls, floors, furniture, and occupants. These surfaces then release heat gradually, helping maintain a stable and comfortable indoor temperature.

Because of its thin design and energy-efficient heat transfer, far infrared heating film is increasingly used in modern underfloor heating systems, smart home heating installations, and renovation projects.

What Is Far Infrared Heating Film?

Far infrared heating film is a thin and flexible electric heating element typically made from conductive carbon materials sealed between protective insulation layers.

When electrical current passes through the carbon layer, electrical resistance generates heat. This heat is emitted as long-wave infrared radiation, which travels through the air and warms surfaces directly.


Unlike traditional radiators that heat the air first, infrared heating warms:

  • floors
  • walls
  • furniture
  • people inside the room

These warmed surfaces slowly release heat back into the space, creating a balanced and comfortable thermal environment.

To learn more about radiant heating technology read our guide: How Infrared Heating Works.

How Far Infrared Heating Film Works

The operating principle of infrared heating film is based on electrical resistance and radiant heat transfer.

When electricity flows through the carbon heating layer, resistance produces heat energy. That heat is emitted in the form of far infrared radiation, typically within wavelengths between 7 and 14 micrometres.

1. Heat Generation

Electric current flows through the carbon layer, producing thermal energy.

2. Infrared Radiation Emission

The heated surface emits long-wave infrared radiation into the room.

3. Surface Absorption and Re-Emission

Objects and surfaces absorb the radiation and gradually release heat back into the space.

This process allows heat to spread evenly without relying on air circulation.

For a broader explanation see: Infrared Heating Explained.

Structure of Infrared Heating Film

Modern infrared heating films consist of several layers designed for safety, durability, and efficient heat transfer.

Carbon heating layer
A conductive carbon matrix that generates heat through electrical resistance.

Copper or silver busbars
Metal conductors that distribute electrical current evenly across the film.

Polymer insulation layers
Provide electrical insulation and mechanical protection.

Protective outer coating
Ensures durability and protects internal components.

These layers create an ultra-thin heating element that can be installed beneath flooring surfaces.

Learn more in: Infrared Heating Underfloor Systems.

Radiant Heating vs Conventional Heating

Traditional heating systems warm the air first and rely on convection to distribute heat around a room. Radiant heating systems such as infrared heating film operate differently by transferring energy directly to surfaces and people.

Infrared Heating vs Radiator Heating

Feature Infrared Heating Film Radiator Heating
Heat Transfer Method Radiant heat warms surfaces and people directly Convection heats air which circulates around the room
Temperature Distribution Even warmth across surfaces Hot near radiator, cooler further away
Air Movement Minimal Air circulation through convection
Heat Retention Warm surfaces release heat gradually Heat mainly stored in the air
Comfort Level Comfortable radiant warmth Requires higher air temperature

Infrared Heating vs Electric Radiators

Feature Infrared Heating Film Electric Radiators
Heat Type Radiant heat Convection heating
Warm-Up Time Fast perceived warmth Slower air heating
Air Movement Minimal Creates air currents
Heat Distribution Even surface warmth Heat concentrated near radiator
Comfort Efficiency Comfort felt at lower air temperatures Higher air temperature required

Infrared Heating vs Water Underfloor Heating

Feature Infrared Heating Film Water Underfloor Heating
Installation Simple thin system Complex pipe installation
Floor Height Increase Minimal Often significant
Heat Response Fast Slower due to thermal mass
Maintenance None Pumps and pipe servicing
Installation Cost Low to moderate Higher cost

Advantages of Far Infrared Heating Film

Thin Design

Heating film is extremely thin and ideal for installations beneath laminate, vinyl, or engineered flooring.

Even Heat Distribution

Radiant heating warms surfaces evenly throughout the room.

Silent Operation

No pumps, fans, or moving mechanical parts.

Fast Heating Response

Radiant heat is felt quickly because energy transfers directly to people and objects.

Smart Heating Compatibility

Infrared heating film systems can integrate with smart thermostats and zoned heating systems.

See more in: Smart Heating Systems.

Applications of Infrared Heating Film

Heating film can be used in many residential and commercial installations.

Underfloor Infrared Electric Heating Film Kit 1000 mm - iHelios Living

  • Underfloor heating systems 
  • Wall heating installations
  • Ceiling heating systems
  • Renovation projects

For laminate flooring kit check Laminate Flooring Heating Kit

For installation details see: Infrared Heating Installation Guide.

Energy Efficiency Considerations

The efficiency of infrared heating film depends on:

  • insulation levels
  • room size
  • thermostat control
  • electricity tariffs
  • system design

Well-insulated homes benefit most from radiant heating systems.

Is Far Infrared Heating Suitable for UK Homes?

Far infrared heating film can be suitable for many UK properties particularly where:

  • gas supply is unavailable
  • renovations require minimal floor height changes
  • zoned heating control is desired
  • electric heating systems are preferred

For a broader overview see: Alternatives to Home Heating in the UK.

Frequently Asked Questions

Is infrared heating film safe?

Yes. Modern heating films include protective insulation layers and safety certifications.

Can infrared heating heat a whole house?

Yes, when correctly designed and combined with appropriate insulation.

Does infrared heating use a lot of electricity?

Energy use depends on insulation levels, system design, and thermostat settings.

Conclusion

Far infrared heating film converts electrical energy into long-wave infrared radiation, warming surfaces rather than air. This radiant heating method creates a comfortable indoor environment with even heat distribution.

With its slim design, silent operation, and compatibility with modern smart heating controls, infrared heating film is increasingly used in modern homes and renovation projects.

Last updated: 2026

The iHelios far infrared heating film converts electrical energy into infrared radiation, which then directly heats objects and surfaces in its path — rather than simply heating the air. This means the film warms the building fabric and contents, helping to produce uniform and efficient warmth.

The film comprises several essential layers including: Conductive layers made of clean carbon (responsible for generating heat when current passes through) Insulating layers surrounding the conductive material for safety and efficiency Protective layers (often PET) to protect against physical damage and environmental factors

Because the film emits far infrared radiation that directly warms surfaces and objects, it avoids the inefficiencies of first heating air (which can then escape or be lost). As a result, less energy is wasted via convection losses and the heating effect feels more even.

Installing the film under floors or in ceilings ensures an even heating surface and uniform heat distribution across the space. This helps eliminate cold spots or uneven temperature zones.

The film supports integration with thermostats and smart control systems, which allow scheduling, zoning and efficient temperature regulation — ensuring the film only operates when and where needed. This smart control approach helps maximise energy efficiency and system responsiveness.

feature-item-1
feature-item-2
feature-item-3
feature-item-4
feature-item-5