Electric heater guide: what to know before you choose yours

Do I need an electric heater?

You may need an electric heater if your space feels cold, under‑heated, or used intermittently – and you want heat that is quick, controllable, and easy to install.

Electric heaters convert electricity directly into heat, making them suitable for:

●      Homes without gas supply.

●      Supplementing central heating.

●      Heating one room rather than an entire home.

●      Flats, rentals, and home offices.

●      Outdoor or semi‑outdoor areas such as patios or porches.

Electric heaters are also popular because they do not require pipes, vents, or fuel storage. Plug in, switch on, and heat is delivered where and when you need it.

What is an electric heater?

An electric heater is a device that produces heat using electrical energy rather than combustion. Every heater electric heater model uses resistance to generate warmth, but how that warmth is delivered varies by design.

How do electric heaters work?

Electric heaters draw electricity through internal components that warm up and transfer heat into the surrounding air or surfaces.

There are three main ways heat is delivered:

●      Convection: Warms the air, which then circulates around the room.

●      Radiant heat: Warms people and objects directly.

●      Forced air: Uses a fan to push warm air into the space.

Understanding this difference helps explain why some heaters feel instant while others warm a room more gradually.

Types of electric heaters explained

Electric heaters are not one‑size‑fits‑all. Choosing the right type depends on how long the space is used, how large it is, and whether the heater needs to be portable or fixed.

Electric fan heater

An electric fan heater delivers fast, noticeable heat using a fan to project warmed air. These heaters are ideal for:

●      Quick warmth in small to medium rooms.

●      Home offices or bedrooms.

●      Spot heating.

An electricity fan heater typically feels warm within seconds. However, because the fan actively moves air, heat can disperse quickly when switched off.

Small electric heater

A small electric heater is designed for personal comfort or compact spaces. These models are often portable and can sit under a desk or beside a sofa.

They are useful where:

●      Space is limited.

●      Heat is needed for short periods.

●      Portability matters.

Electric panel heaters

Electric panel heaters provide steady, background warmth over longer periods.

These heaters warm the air gradually and are commonly used as an alternative to storage heating. Electric panel heaters are often wall‑mounted and designed to blend into interiors.

They suit:

●      Living rooms.

●      Bedrooms.

●      Homes without gas.

Electric storage heaters

Electric storage heaters store heat overnight and release it during the day. They are traditionally paired with off‑peak electricity tariffs.

While effective in some homes, they:

●      Require space.

●      Are less flexible.

●      Release heat even when not needed.

Electric wall heaters and wall mounted electric heaters

Electric heaters that mount on the wall include electric wall heater and electric wall heaters designed for permanent placement.

These are suited to:

●      Bathrooms.

●      Hallways.

●      Consistent heating needs.

Wall mounted electric heaters free up floor space and provide predictable heat output.

Electric patio heater and electric porch heater

An electric patio heater or electric porch heater provides outdoor warmth without open flames.

These heaters are popular for:

●      Covered patios.

●      Balconies.

●      Outdoor dining areas.

They offer targeted warmth and are often weather‑resistant.

What about electric water heaters?

An electric water heater is different from a space heater. These devices heat water rather than air and are used for showers, taps, and appliances.

They are relevant if you are considering electric solutions for hot water, but they do not heat rooms and should not be confused with electric heaters for living spaces.

Which is the most efficient electric heater?

All electric heaters are close to 100 percent efficient at converting electricity into heat at the point of use.

Efficiency differences come down to how heat is delivered and controlled, not how much electricity becomes heat.

●      Fan heaters feel fast but may need frequent use.

●      Panel heaters deliver consistent warmth.

●      Well‑designed airflow helps distribute heat evenly.

Efficiency improves when heat is directed where it is needed rather than heating unused spaces.

What is the cheapest type of electric heater to run?

The cheapest electric heater to run is the one that heats only the space you are using, only when you need it.

Cost depends on:

●      Wattage.

●      Electricity tariff.

●      Duration of use.

Search terms like ‘1p per hour electric heaters’ can be misleading. Any heater claiming extremely low running costs must be used at very low power or for short periods.

How much does a 2000W electric heater cost to run per hour?

A 2000W heater uses 2 kWh of electricity per hour. Running cost = electricity unit rate × 2

For example, at 30p per kWh, the cost would be approximately 60p per hour.

Actual costs vary based on tariff and usage patterns.

Do electric heaters use a lot of electricity?

Electric heaters use electricity in proportion to their power rating and usage time. They do not waste energy, but running a heater continuously in a large space will cost more than targeted heating in a single room. Using the right heater for the right space makes the biggest difference.

What to look for when choosing the best electric heater

When choosing the best electric heater for your needs, consider:

●      Room size.

●      Heat delivery style.

●      Noise levels.

●      Portability.

●      Safety features.

●      Ease of control.

Heating does not need to be complicated. Clear airflow, controlled heat direction, and simple operation improve everyday comfort.

Where Dyson fan heaters fit in

Some electric heaters focus on air projection rather than static heat.

The Dyson Hot+Cool™ Jet Focus AM09 fan heater is designed to provide focused or wide heat distribution, helping warm spaces quickly while remaining compact and easy to position.¹

Because it also offers cooling airflow, it can be used year‑round rather than stored away when temperatures rise.¹

Explore Dyson’s full range of fans and heaters.

Indoor vs outdoor electric heaters

Electric heaters can be used indoors or outdoors, but they are designed differently. Indoor heaters focus on air circulation and comfort, while outdoor heaters such as electric patio heaters deliver directional warmth to counter heat loss in open spaces.

Always choose a heater rated for its intended environment.

Safety considerations

Electric heaters should always be:

●      Used according to manufacturer guidance.

●      Kept clear of obstructions.

●      Switched off when not needed.

Built‑in safety features help prevent overheating and improve peace of mind during regular use.

Final thoughts: is an electric heater right for you?

An electric heater is right for you if you value flexibility, targeted warmth, and simple setup. From small electric heater options to wall mounted electric heaters and electric fan heater designs, there is a solution for almost every space. The key is matching the heater to how, when, and where you want warmth.

Ready to find the right heater?

Discover Dyson’s range of fans and heaters designed for controlled, comfortable heating all year round.

Footnotes

1. Heating and cooling functions vary by product and mode. Refer to individual product specifications and user guidance for details.