As an expert in the field of energy efficiency and heating technology, I am well-versed in the intricacies of various heating systems. Let's delve into the question of whether electric radiators are more efficient.

Firstly, it's important to clarify what we mean by "efficiency" in this context. Efficiency in heating systems can be measured in several ways, including how effectively they convert energy into heat and how well they distribute that heat within a space.

Electric radiators, such as convector heaters and oil-filled radiators, are indeed almost 100% efficient in terms of converting electrical energy into heat. This means that almost all of the energy they consume is used to generate heat, with minimal losses. This is a significant advantage, as it ensures that the energy you pay for is directly warming your home.

However, the statement that "electricity is nearly three times as expensive to use as gas" introduces a crucial economic factor into the equation. The cost of the energy source is a critical component of overall heating efficiency. If electricity is more expensive than gas, then even though the conversion efficiency of an electric radiator might be high, the cost per unit of heat delivered can be significantly higher than that of a gas-powered system.

Another aspect to consider is the source of electricity. If the electricity used by the electric radiators is generated from renewable sources, then from an environmental perspective, electric radiators could be considered more efficient, as they contribute less to carbon emissions. On the other hand, if the electricity is generated from fossil fuels, the overall environmental impact might be higher, even if the radiators themselves are efficient.

The type of electric radiator also plays a role in efficiency. For instance, oil-filled radiators are known for their ability to retain heat and slowly release it over time, which can be beneficial in maintaining a consistent temperature in a room. In contrast, convector heaters work by circulating air, which can heat a room quickly but may not provide the same level of heat retention.

Heat distribution is another factor. Electric radiators can be very effective at heating the space immediately around them, but they may not distribute heat as evenly throughout a room or a home as central heating systems that use ducts or radiators connected to a central heat source.

Moreover, the thermal properties of the home must be taken into account. The insulation, window and door seals, and overall construction can greatly affect how efficiently heat is retained once it is generated. A well-insulated home will maintain heat more effectively, regardless of the heating source.

In conclusion, while electric radiators are almost 100% efficient in converting electricity to heat, whether they are more efficient overall depends on several factors, including the cost of electricity, the source of the electricity, the type of radiator, heat distribution, and the thermal properties of the home. It's essential to consider all these aspects when evaluating the efficiency of a heating system.

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Electric space heating is almost 100% efficient as almost all purchased energy (15.5p per kW) is converted to heat, this applies to convector heaters, oil filled radiators and most portable electric heaters. ... Electricity is nearly three times as expensive to use as gas!read more >>