Thursday, 12 December 2013

How Efficient Are Radiators that Run on Electric?

Many people prefer central heating, which uses a radiator, in favour of electric radiators, such as Economy 7. This is because, traditionally, the central heating systems have been much more efficient. However, technology has come a long way since the advent of the electric radiator, and today, many are equally, if not more, efficient. Below, we’re going to consider how far they’ve come in recent years. This way, if you need to buy a new heating system for your home, you can make a more informed decision.

What is Efficiency?
Before we being to look at the efficiency of electric radiators, we first need to define the term efficient. Here are a few things that we mean when we talk about efficiency with regards to heating:

·         How much heat does it radiate for its size
·         How quickly does the system take to heat up
·         Which radiator costs the least to run

Are they Efficient?
Electric heaters have always been considered efficient in terms of the time it takes to heat up, and the amount of heat radiated for the size. In terms of speed, electric heaters will begin to emit heat straight away, whereas central heating systems take a while to warm up (this is why people use a thermostat on a timer when using the central heating – so they can choose when their home heats up.).



In terms of cost, electric heaters have always been considered less efficient. However, today’s models are much more economical. There is a manner of different ways I that they save money in comparison to central heating systems.

1.       With certain models, such as the Economy 7 range, you have the option of heating the radiator at night, on a cheaper tariff. The majority of electricity suppliers offer an off-peak rate for night time electricity, which is as little as 25% of their on-peak prices. Now, you may think that you’ve spotted a problem here: if it heats up at night, you don’t get electricity in the day. This is wrong. There are special bricks in the Economy 7 heaters that retain their heat for the following day. This is why they are also known as storage heaters: they store their heat.

2.       They are cheaper than central heating systems that use electricity, as opposed to gas, and are widely seen as cheap radiators in comparison. There are several reasons for this:
a.       You cannot store heat with an electric central heating system. When you need heat, you have to switch the boiler on. The boiler cannot store heat.
b.      With both gas and electric central heating systems heat is lost as it travels around the system – through the pipes. This means that they emit less heat than they could if each radiator stood alone, as is the case with storage heaters.
3.       The technology is much better for electric heaters than in the past. Today, the heaters are much more efficient, regardless of whether you use it in the day or at night. Energy saving technologies has made it so that electric heaters are cheap radiators.


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