INSIGHTS & GUIDES
Infrared Heating vs Propane: Which Is Better for Off-Grid Heating?
Infrared and propane heating are two very different options for homes, workshops, farms and commercial buildings without access to mains gas.
Propane — commonly supplied as LPG — provides fuel for a combustion-based heating system, while electric infrared heaters use radiant heat to warm people and surrounding surfaces.
Comparing the two purely by the price of electricity and propane does not tell the whole story. The total cost depends on the building, heating demand, system efficiency, controls, maintenance, installation and whether you need to heat an entire property or only particular occupied areas.
This guide compares infrared heating vs propane across running costs, installation, maintenance, control and suitability for different off-grid applications.
For a wider comparison of heating technologies, see our infrared heating vs traditional heating guide.
Quick Answer
Is Infrared Heating Better Than Propane?
Neither system is automatically cheaper or more suitable for every property.
Propane can make sense where an existing LPG central-heating system already serves a property that requires consistent whole-building heating. Infrared can be particularly useful where heating demand is more localised — for example individual rooms, work areas, garages, workshops or buildings that are occupied intermittently.
The correct comparison therefore depends on how much of the building needs heating, for how long and how the system will actually be controlled.
Infrared vs Propane Heating at a Glance
| Factor | Infrared Heating | Propane Heating |
|---|---|---|
| Energy source | Electricity | Stored LPG / propane |
| How heat is delivered | Radiant heat directed towards people and surfaces | Depends on the system — commonly boilers with radiators or warm-air systems |
| Fuel storage | No on-site fuel tank | Normally requires LPG storage |
| Fuel deliveries | No | Yes, where bulk LPG is used |
| Combustion at property | No | Yes |
| Zoning | Individual heaters or appropriately designed heating zones can be controlled separately | Possible depending on the central-heating system and controls |
| Servicing | Generally fewer service requirements at the heater itself | Combustion appliances require appropriate servicing and maintenance |
| Typical appeal | Targeted, room-by-room or intermittently occupied heating | Central whole-property heating and properties with an existing LPG system |
How Infrared Heating Works
Infrared heaters use radiant energy to warm people and surrounding surfaces such as walls, floors and furnishings.
Rather than depending primarily on warming and circulating a large volume of air, the heating can be positioned around the occupied area and controlled according to how the room or building is used.
This makes infrared particularly interesting for properties where different rooms are occupied at different times or where only part of a larger space requires heating.
Electric infrared systems can also be installed on a room-by-room basis, making phased installation possible where appropriate.
How Propane Heating Works
Propane is a form of liquefied petroleum gas - LPG - that can be stored at the property and used as a fuel where mains gas is unavailable.
In a typical central-heating arrangement, the LPG is burned by a boiler and the resulting heat is distributed around the property, for example through water-filled radiators. Propane can also be used by other types of heating appliance.
A bulk LPG system normally introduces considerations that an all-electric infrared system does not have, including:
- On-site fuel storage
- Fuel deliveries
- Combustion-appliance servicing
- Boiler and associated central-heating components
- Monitoring fuel levels and supply
On the other hand, an existing LPG central-heating system may already provide a practical way of heating an entire property, particularly where rooms are occupied consistently.
Running Costs
Is Infrared Cheaper to Run Than Propane?
There is no universal answer because electricity and LPG are purchased differently and the heating systems may be used in completely different ways.
For infrared heating, the maximum active electricity cost is straightforward to calculate:
Heater output in kW × operating hours × electricity price per kWh = maximum active electricity cost
For example, a 1.2kW infrared heater drawing full power for three hours consumes a maximum of 3.6kWh during that period. The monetary cost then depends on the electricity tariff.
Thermostatic operation can change actual consumption because a heater does not necessarily draw its maximum rated power continuously throughout the complete scheduled period.
Propane costs need to account for the amount of fuel consumed by the system and the price paid for LPG, together with the performance of the heating equipment.
The comparison becomes particularly important when the amount of space being heated is different. Heating one occupied workshop bay with infrared is not the same heating task as operating a central system throughout an entire building.
For more on calculating electric infrared costs, read how much infrared heating costs to run in the UK.
Where Targeted Heating Can Change the Comparison
One of the most important differences between the systems is not simply the fuel — it is how the heating can be used.
Infrared heaters can be installed and controlled around individual rooms or occupied areas. That can be useful where only part of a property needs heat at a particular time.
Examples include:
- A home where only certain rooms are occupied during the day
- A workshop where only particular work areas require heating
- A garage or outbuilding used for a few hours at a time
- A commercial building with different occupancy patterns
- A large or high-ceilinged space where occupied zones are the priority
This does not mean infrared automatically consumes less energy than propane. It means that zoning and operating strategy can materially change the amount of heating being requested from the system.
Maintenance, Fuel Storage and Practical Differences
Electric
Infrared Heating
- No LPG deliveries
- No on-site combustion at the heater
- No LPG storage tank
- No boiler required for a direct-electric infrared system
- Individual heaters or zones can be controlled separately where designed accordingly
LPG
Propane Heating
- Fuel needs to be stored or otherwise supplied
- Bulk systems require LPG deliveries
- Combustion equipment requires appropriate servicing
- Central systems can include boilers, radiators and associated components
- Zoning depends on the design and controls of the heating system
These differences can matter particularly in rural properties, remote buildings and seasonal premises where access, servicing and fuel supply form part of the long-term ownership decision.
When Propane Heating May Make More Sense
Propane should not automatically be dismissed simply because a property is off-grid.
An LPG system may remain practical where:
- A functioning propane central-heating system is already installed
- Most or all of the property requires heating for long periods
- The existing heat distribution system suits the building
- There is suitable LPG storage and reliable fuel delivery
- The cost and disruption of replacing the complete system would outweigh the expected benefits
In these circumstances, the correct comparison should include the cost of replacing an existing system rather than looking only at future energy prices.
When Infrared Heating May Make More Sense
Infrared becomes particularly interesting when the way a building is occupied suits targeted electric heating.
Examples include situations where:
- Different rooms are occupied at different times
- Only specific areas of a larger space need heating
- The property has no mains gas connection
- You want to avoid LPG storage and deliveries
- A wet central-heating system is not required
- Heating is needed in workshops, garages or outbuildings
- A phased room-by-room installation is preferred
For larger workshops and commercial spaces, higher-output infrared bar heaters can also provide an alternative to installing numerous smaller panels.
Can You Use Infrared Heating Alongside Propane?
Yes. The choice does not necessarily have to be one system or the other.
A property with an existing LPG central-heating system could use infrared heating in a particular room, extension, workshop or other area where independent heating is useful.
Whether this reduces overall costs depends entirely on how the two systems are subsequently operated. Simply adding another heater does not itself reduce energy consumption.
The potential advantage comes when the additional heating allows the property owner to control particular occupied areas without unnecessarily operating a larger heating system for spaces that do not require heat.
Calculate the Infrared Heating Your Building Needs
Correct sizing matters. An infrared system should be selected according to the room dimensions, building type and heat requirement rather than using a generic heater-per-square-metre assumption.
Use our room-based Wattage Calculator to estimate the infrared heating output required for each area.
For larger rural, workshop or commercial projects, heater positioning and zoning should also be considered alongside the total calculated wattage.
Infrared vs Propane Heating FAQs
Is infrared heating cheaper than propane?
Not automatically. The answer depends on electricity and LPG prices, the performance of the systems, how much of the building is heated and how long the heating operates. Infrared can make the comparison particularly interesting where only individual rooms or occupied areas require heat.
Is infrared suitable for an off-grid home?
Infrared heating can be used in properties without mains gas because it operates from electricity. The electrical supply, required heating output, building construction and intended usage should all be considered when designing the system.
Does infrared heating need an LPG tank?
No. Electric infrared heating does not require LPG storage or fuel deliveries.
Can infrared replace propane central heating?
It can provide the primary space heating in an appropriately designed property, but replacing an existing central-heating system should be based on the heating requirement of the complete building rather than simply exchanging one appliance for another.
Can I keep my propane heating and add infrared heaters?
Yes. Infrared can be installed independently in particular rooms or areas while an existing LPG system remains in place. Whether this arrangement saves energy depends on how both systems are controlled and used.
Which is better for a workshop — infrared or propane?
It depends on the workshop, but infrared can be particularly useful where heating needs to be directed towards occupied work areas rather than treating the entire building as a single heating zone. Heater output, mounting position and the workshop's construction still need to be considered.
Planning an Off-Grid Heating Project?
Calculate the Heating Requirement Before Choosing the System
The best comparison starts with the building itself — its dimensions, construction, insulation, occupancy and the areas that actually need heating.
Use our Infrared Heating Wattage Calculator, explore our heating-system comparisons or speak with an infrared heating specialist about your property.
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