INSIGHTS & GUIDES
Infrared Heating vs Ground Source Heat Pumps: Which Uses Less Energy?
Infrared heating and ground source heat pumps can both form part of an all-electric heating strategy, but they use electricity in fundamentally different ways.
A ground source heat pump extracts heat from the ground and uses electricity to move that heat into a building. Infrared heating converts electricity into radiant heat at the point of use, directing warmth towards people and surfaces within the heater's effective coverage.
This creates an important distinction: a heat pump aims to deliver multiple units of heat for each unit of electricity consumed, while an infrared system can instead be designed around individual rooms, occupied areas and independent heating schedules.
So which uses less energy? The answer depends on what is being compared: electricity required to produce heat, or the total heating demand created by the way the building is actually used.
Quick Answer
Which Uses Less Electricity: Infrared or a Ground Source Heat Pump?
For the same useful heat requirement, a correctly designed ground source heat pump can use less purchased electricity than direct electric infrared heating because it moves additional heat from the ground rather than producing all of the heat from electricity alone.
Infrared approaches the problem differently. Its potential advantage is the ability to design heating around individual rooms or occupied zones, which can be useful where the whole building does not require the same heating schedule.
The correct comparison therefore depends on the building, its heat requirement, occupancy, controls, installation constraints and how much of the property actually needs heating at any one time.
Infrared vs Ground Source Heat Pumps at a Glance
| Factor | Infrared Heating | Ground Source Heat Pump |
|---|---|---|
| Heating principle | Electric radiant heating | Transfers heat from the ground into the building |
| Electricity to heat | Direct electric resistance heating | Can deliver more heat energy than the electrical energy consumed by the heat pump |
| Heat delivery | Radiant heat directed towards people and surfaces | Typically supplies a wet central-heating distribution system |
| Zoning | Can be designed room by room or by occupied area | Possible, but depends on system design and controls |
| Ground works | None | Ground loops require suitable trenches or boreholes |
| Installation | Can be installed progressively across individual rooms | Whole-system project requiring ground array and internal equipment |
| Mechanical equipment | Fixed electric infrared panels contain no compressor | Heat-pump system contains mechanical and refrigeration components |
| Best comparison | Targeted radiant heating and simpler retrofit | Efficient whole-building heat delivery where the property suits the system |
How Does a Ground Source Heat Pump Save Energy?
A ground source heat pump uses a network of buried pipes to collect low-temperature heat from the ground.
The heat pump then uses electricity to raise that energy to a temperature suitable for the building's heating system.
The important point is that the electricity is primarily being used to move and upgrade existing heat, rather than acting as the sole source of the heat delivered to the property.
This means a properly designed heat-pump system can provide more units of useful heat than the units of electricity consumed by the heat pump itself.
Actual performance depends on the complete installation, including:
- The building's heat requirement
- Ground-loop design
- Heat-pump sizing
- Required flow temperatures
- Heat emitters and distribution system
- Controls and operating pattern
Important: headline efficiency figures should not be treated as a guaranteed performance figure for every property. The actual seasonal performance of a ground source system depends on its design and operating conditions.
How Does Infrared Heating Approach Energy Use?
Infrared heating does not multiply the heat output from each unit of electricity in the way a heat pump can.
Instead, electric infrared heaters convert electrical energy into heat and deliver a significant part of that heat radiantly towards people and surrounding surfaces.
The opportunity to manage energy use therefore comes from how the heating system is designed and operated.
For example, an infrared system can be divided across individual rooms or appropriate zones, allowing heating schedules to reflect when different parts of a building are actually occupied.
That can be particularly relevant in properties where:
- Different rooms are occupied at different times
- Only part of a larger building requires heating
- Heating demand changes significantly throughout the day
- A conventional whole-building retrofit would be difficult
This does not mean infrared automatically uses fewer kilowatt-hours than a heat pump. It means the two technologies approach energy use in different ways.
For a detailed explanation of electric infrared consumption, see how much infrared heating costs to run in the UK.
The Key Difference
System Efficiency vs Heating Demand
This is the most important concept when comparing infrared heating with a ground source heat pump.
A heat pump can be more efficient at producing useful heat from purchased electricity.
An infrared system can be designed to avoid operating heating in rooms or zones that do not currently require it.
Those are not the same thing.
Consider a property where almost every room requires heating for long periods each day. The high heat-delivery efficiency of a well-designed heat pump can become extremely important.
Now consider a building where only a few rooms or work areas are occupied at particular times. In that situation, the ability to operate separate heaters only where required becomes a much larger part of the energy-use calculation.
The fairest comparison therefore looks at the complete building and its real operating pattern, rather than comparing a heat-pump efficiency figure with an infrared heater in isolation.
When Can a Ground Source Heat Pump Make More Sense?
Ground source heating can be particularly attractive where the property and project are well suited to a central heat-pump system.
Examples can include:
- Properties with substantial and regular whole-building heating demand
- Well-insulated homes undergoing a major heating-system upgrade
- New-build projects where the system can be designed into the property from the beginning
- Properties with suitable land or access for the required ground array
- Projects where suitable low-temperature heat emitters form part of the design
In these circumstances, the ability of the heat pump to move additional energy from the ground can significantly reduce the purchased electricity required for a given useful heat output compared with direct electric resistance heating.
When Can Infrared Heating Make More Sense?
Infrared can become particularly interesting where the priorities are different.
Examples can include:
- Rooms that are occupied at different times
- Extensions or individual areas requiring a separate heating solution
- Buildings where extensive ground works or wet-heating alterations are impractical
- Retrofit projects that need to be completed progressively
- Large spaces where heating is required around particular occupied areas
Churches, halls, workshops and some heritage or commercial buildings can have very different occupancy patterns from a continuously occupied home, so the heating strategy needs to reflect the way the building is actually used.
Ground Works vs Electrical Installation
Installation is one of the largest practical differences between the technologies.
Ground Source Heat Pump
Whole-System Installation
- Ground collector system required
- Trenches or boreholes depending on design
- Heat-pump equipment required
- Integration with the building's heating distribution system
- Professional system design and installation
Infrared Heating
Room-by-Room Installation
- No ground collector required
- No wet pipework required for the heaters
- Wall, ceiling and other product-specific formats available
- Can be installed progressively
- Requires suitable electrical supply, mounting and controls
This does not mean an infrared installation is simply a matter of attaching panels to a wall. Fixed heaters can have specific electrical, mounting and control requirements, and the manufacturer's installation instructions should always be followed.
5 Questions to Ask Before Comparing the Two
01
How Much of the Property Needs Heating?
If virtually the entire building requires regular heating, that produces a different comparison from a property where only selected rooms are used each day.
02
How Long Is Heating Required?
A continuously occupied home has a very different heating profile from an office, workshop, church or spare room used for limited periods.
03
What Installation Work Is Practical?
A ground source system requires an appropriate ground collector and whole-system design. Existing properties may have very different practical constraints.
04
How Well Does the Building Retain Heat?
Insulation, glazing, air leakage, construction and room dimensions all affect the building's heating requirement regardless of the technology installed.
05
Do You Need Independent Room Control?
Consider whether the whole property follows one general heating pattern or whether individual rooms and zones need substantially different schedules.
Maintenance and Long-Term Ownership
A ground source heat-pump installation is a complete mechanical heating system rather than simply a heat emitter.
It includes the heat pump itself, ground collector, controls and heating distribution equipment, with maintenance requirements depending on the system and manufacturer.
Fixed electric infrared panels are mechanically simpler at the heater because they do not require compressors, pumps or combustion components within the panel itself.
That does not mean the wider infrared installation should be described as “maintenance free”. Heaters, electrical connections and controls should still be inspected and maintained as appropriate and in accordance with the product instructions.
Correct Sizing Matters for Both Systems
Neither technology can compensate for poor system design.
A ground source heat pump needs to be designed around the building's heat requirement, ground collector and heat-distribution system.
An infrared system also needs sufficient heater output and appropriate positioning for the rooms or areas being heated.
Oversimplified rules based solely on floor area can miss important factors such as room height and building construction.
For infrared heating, you can estimate the required room output using our room-based Wattage Calculator.
Compare Infrared with Other Heating Systems
Ground source heat pumps are only one alternative to direct electric infrared heating.
Depending on the property, you may also be comparing infrared with gas central heating, electric convection heating, air source heat pumps or other electric heating systems.
Our infrared heating vs traditional heating guide provides a broader comparison of the available approaches.
Infrared vs Ground Source Heat Pump FAQs
Is a ground source heat pump more efficient than infrared heating?
In terms of useful heat delivered per unit of purchased electricity, a correctly designed ground source heat pump can outperform direct electric resistance heating because it transfers additional heat from the ground. Overall building energy use still depends on heating demand, controls, occupancy and system operation.
Does infrared heating use less electricity than a ground source heat pump?
Not inherently. A heat pump can require less electricity to deliver the same quantity of useful heat. Infrared may instead provide opportunities to limit heating to particular rooms or occupied areas, so the complete usage pattern needs to be compared.
Which is easier to install?
Infrared generally avoids the ground collector and wet heating infrastructure required by a ground source heat-pump system. Fixed infrared heaters still require appropriate electrical supply, mounting and controls.
Is infrared suitable for retrofit properties?
Infrared can be considered for retrofit projects because individual rooms can be heated without installing a ground collector or a wet heating circuit for the heaters. Suitability still depends on the building's heating requirement and electrical installation.
Which system is better for a new build?
That depends on the design brief. A new build provides an opportunity to design insulation, emitters and a heat-pump system together from the outset, while infrared may appeal where independent electric room control and a simpler heating infrastructure are priorities.
Can infrared heating and a heat pump be used in the same property?
A property can use more than one heating technology. Whether that is sensible depends on the building, controls, heating requirements and reasons for adding supplementary heating rather than assuming that a combined system will automatically reduce energy consumption.
Infrared or Ground Source: Which Is Right for Your Property?
Ground source heat pumps and infrared heating solve the heating problem in very different ways.
A ground source heat pump focuses on delivering useful heat efficiently by transferring additional energy from the ground. That can make it extremely effective where a property has substantial, regular whole-building heating demand and the site suits the required installation.
Infrared heating is direct electric heating, but provides a different type of flexibility: heaters can be positioned and controlled around individual rooms and appropriate heating zones without installing a ground collector or wet distribution system for the heaters.
The right comparison therefore needs to consider the building's heat requirement, occupancy pattern, installation constraints, controls and total operating cost — not simply a headline efficiency figure.
For another perspective on the two technologies, read our infrared heating vs heat pumps: running costs compared.
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