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What are the running costs of electric radiators?

If you couldn’t count on BestHeating to be passionate about best heating practices, who could you trust?!

We know that heating the home can prove one of the most expensive, yet entirely necessary ongoing strains on income. So we understand the importance of identifying the most cost-effective heating solutions for your specific space.

Of course, oil and gas have long been considered the go-to fuel source options for the radiators of UK residences. But as that statement sounds like it could have been directly lifted from a BBC period drama, you could be forgiven for craving to explore alternative modernized models.

And with technological advancements abound in the design of electric radiators, could they represent the ideal heating solution to lead you to the promised land of lower energy bills?

We’ll take a look at how electric radiators work with regards to space heating and the amount of heat they generate in this article. And ultimately, help you decide if energy efficient electric radiators are the right choice for you and your home.

So how do you work out the running costs of electric radiators?

Working out electric radiator running costs

To borrow a line from the Stone Roses, there’s no surefire set solution to work out electric radiator running costs. Though it’s hardly a ten-storey conundrum to garner a basic estimate in accordance with your typical energy usage habits.

You can group together the energy expended by electric radiators with that used by other electrical appliances, but there’s a vast difference when heating is involved.

For example, although a television set and an electric radiator both use electricity to operate, they do so in a fundamentally different fashion.

A TV will utilise energy all the while it is switched on, only stopping once you’ve finished your latest Netflix binge, or hit the standby button in a rage at James Corden’s latest “comedy”.

Meanwhile, electric heating systems will utilise an internal thermostat to switch on and off in line with the preferred set temperature for the room. They’ll only actually expend energy when they need to kick an extra amount of heat out to top up the room to a comfortable setting, which will affect how much they cost to run.

A key takeaway then, is that a 500W plasma TV won’t translate to the same cost of electricity as a 500W electric radiator would, despite their identical power outputs.

In fact, you’re very likely to get more bang for your buck from electric heaters in comparison with other electrical appliances. That is one notion suggesting that electric radiators are a great choice for landlords, due to what this sort of radiator requires; namely no central heating systems.

But what main factors determine radiator running costs?

Other factors to influence electric radiator running costs

There’s plenty of other factors that can influence electric radiator running costs. In most instances, the variables pertain to which room in the house you are looking to heat electrically, and for how many hours a day the system will be in use.

Contrasting layouts, room designs, and what the spaces are used for can all help or hinder electric energy bills.

Our BTU Calculator can help you determine what sort of radiator will work for any room, but listed below are some of the more prominent influences on electric radiator running costs.

Room size and electric radiators

The height from the floor to the ceiling is especially important in calculating how much energy will be used to heat a room, regardless of the heat source.

Open plan rooms or those with extremely high ceilings always require more energy to stay warm given the nature of the way radiators conduct heat.

Hot air rises from the radiator, with heat travelling to the peak of the room before making its way around the areas that probably need it more. As such, it will take longer for the room to heat up adequately. So if you live atop of the tallest castle with the largest spire, an electric radiator might not be the best bet. (I have ‘Tangled’ on the television to keep my daughter quiet as I write this).

Room insulation and electric radiators

When heating an older home, the likelihood is you’ll have to fork out more money to effectively run your heating continuously.

Modern properties have been increasingly designed with air tightness in mind, ensuring they provide better insulation levels for improved energy efficiency. The reduction in heat loss for newer properties means that electric radiators, or any other type of designer radiators, will be cheaper to run in them. While older homes, with single glazing and poorer general insulation, will have to run radiators for longer, and at a higher temperature, to achieve a comfortable level of warmth.

When heating an older home, the likelihood is you’ll have to fork out more money to effectively run your heating continuously.

House location and electric radiators

A less obvious point to consider regarding the efficiency of electric radiators in the UK is the location of your property. Basically, how exposed the house is to the elements is the deciding factor.

For instance, a terraced property can benefit from the residual heat provided by the immediately surrounding homes on either side. By contrast, detached homes are open from all angles, which makes it tougher to keep them properly heated.

It’s actually a simple equation. The more exposed your house is to more turbulent conditions, the more energy it will take to heat to a comfortable temperature.

So if you’re well above sea level in a north facing property, your electric radiator running costs are simply bound to be higher than in other circumstances.

How do you like your heating?

And ultimately, personal heating preferences can strongly influence the running costs of electric radiators, or any type of heating system for that matter.

For instance, if you’re constantly feeling cool and need your room temperature around 22 degrees or more to feel comfortable, your heating costs are sure to be higher than if you like to chill at about 15 degrees.

You should never sacrifice your comfort to save a few quid though. You might find our guide entitled Should You Buy an Electric Radiator? helpful if you’re unsure about switching to electric heating.

Remember too, that the trends and patterns of your daily routine could see your energy bills fluctuate. Your working hours, daily habits and seasonal weather shifts will all lead to heating cost differentials.

You can however, usually control electric radiators via a smartphone, and thus literally adjust your home heating remotely, at the touch of a button.

How to calculate electric radiator running costs

There’s a relatively simple means to calculate electric radiator running costs. But you should be wary that it is only a basic equation that doesn’t account for any of the variables at play detailed earlier in this article.

You can gain a basic idea of electric radiator running costs using the following formula…

Radiator output (kW) x hours of usage x pence per kW hour = daily radiator running cost (p)

As an example, for a room with an 800W electric radiator that will be in use 6 hours per day, just multiply 0.8kW by 6 to result in 4.8 kW/h.

Then, the electric tariff comes into play. Say you are charged at 16p per kW hour, you need to multiply 4.8 with 16, equaling an average daily cost of 76.8p to run your electric radiator each day.

milano alpha black electric rad

Good news though – it’s almost certain to be less than that, as the calculation doesn’t factor in the use of the in-built thermostatic control, and that it will usually turn on and off in accordance with the air temperature. So the radiator won’t be on at full power the entire time.

The amount of usage hours is definitely the biggest cause for fluctuation in radiator running costs. You’re bound to incur bigger heating costs on a lazy hungover Sunday lounging about the house than you would when you’re down the pub on a Saturday creating said hangover, for example.

Plus, if you have a well-insulated home, it will retain heat well, only requiring your radiator to switch on at sporadic intervals to crank up the heat.

Say your electric radiator was only actually expending energy a quarter of the time mentioned in the example above, and your running costs would only actually equate to 19.2p per day.

Or, if you have an older property that isn’t quite as well insulated, the radiator might still only be required about half the time – at a cost of 38.4p each day.

When putting together your estimations, be sure to take into account your lifestyle habits over the weekend, as well as work patterns, and how you’ll use your heating in the warmer and colder months of the year.

Frequently Asked Questions

Generally speaking, electric heaters are thought to be more expensive to run than gas-powered heating solutions, given that electrical running costs per hour tend to be higher than gas. What’s more, off-peak electricity tariffs can also enhance energy bills depending on the electricity supplier.

That said, there’s a wide variety of factors that can influence electrical running costs, with the size and insulation of a room amongst them, as well as the number of electric radiators or alternate electric heating solutions present.

Plus, the location of the property housing the electric heating devices can also prove a differential, as well as the type of house.

Ultimately, all factors need to be considered on a case by case basis, and your budget taken into account, to determine whether or not electric heaters should be thought of as expensive to run.

On a basic level, electric heating solutions would tend to be typically cheaper to purchase and install, but more expensive to run in the long term than alternate options.

The likes of ground source and air source heat pump systems operate in a far more efficient manner, though will require a bigger initial outlay to buy. That said, government green heating grants are available to offset some of the price.

What’s more, many will place a greater consideration on the environmental impact of their home heating, with electric heating a less viable option than other types in that regard.

For further information, take a look at our blog, What Are The Running Costs Of Electric Radiators?

There is no strict rule, but you can get the utmost levels of energy efficiency out of electric radiators by programming them to alternate preferred temperatures.

For instance, you can set a temperature for when the room is in use (comfort temperature) and a different one for when it is unoccupied (economy temperature).

That way, your electric radiators won’t expend extra energy unnecessarily, helping to keep your heating costs as low as possible.

All electric radiators from BestHeating are filled with a thermodynamic fluid called glycol, which enables them to operate with the utmost efficiency.

Glycol is used because it is excellent at retaining and transferring heat, and incorporates an anti-corrosion inhibitor to prevent rusting.

Further information can be found in our blog, What’s Inside an Electric Radiator?

There are a multitude of benefits to both electric and plumbed radiators, with both types offering unique properties and advantages.

Electric radiators, filled with glycol, can operate independently of a central heating system, whilst plumbed rads rely on the central heating to work.

Consult the BestHeating Radiator Buying Guide to help you decide on the perfect style of radiator to suit your space.

Our electric radiators are supplied pre-filled with glycol, a rust and corrosion-resistant heating solution.

The glycol used in the Milano range of electric radiators is PM20 Solaris Inhibited Heat Transfer Fluid.

If you want to know more about electric radiators and how they operate, check out or guide on what’s inside an electric radiator. Or, for inspiration surrounding all styles of radiators, explore our definitive radiator buying guide.

The running costs of electric radiators may vary, depending on a number of factors.

Many electric radiators usually feature in-built thermostats, so will shut off automatically to preserve energy when not in use.

But your electrical charge tariff, that is set by your energy provider, will have an impact on the cost of running an electric radiator.

For further information, take a look at our Advice Centre blog, What are the running costs of Electric Radiators? Or visit our comprehensive radiator buying guide for a deeper insight into all styles of radiators to upgrade your home.

Get in touch with BestHeating

So there you have it. You should have a decent idea regarding the running costs of electric radiators uk! But, as ever, if you want to know more about whether an electric radiator investment is worth it, or have any other home heating questions, don’t hesitate to get in touch with us.

You can leave your queries or thoughts in the comments section below, or contact us via Instagram, Facebook or Twitter.

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