A convector heater is one of the most practical choices you can make for heating a room in the UK. No plumbing, no installation, no engineer needed. Plug it in, set the thermostat, and it silently draws cool air in from the bottom, heats it across an element, and releases warm air from the top. The De’Longhi HSX2320 is our top pick: a slim, reliable 2kW convector with 697 reviews and a price that makes it easy to recommend.

Below you’ll find our full reviews of the seven best convector heaters available on Amazon UK right now, covering everything from budget options under £25 to smart Wi-Fi models from Dimplex.

Contents

Our Top Picks

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De'Longhi HSX2320 Slim Convector Heater

De'Longhi HSX2320 Slim Convector Heater

A slim, quiet 2kW convector from De'Longhi with nearly 700 reviews. Three heat settings, adjustable thermostat, no installation needed. Read more

EMtronics 2000W Portable Electric Convector Heater

EMtronics 2000W Portable Electric Convector Heater

Outstanding budget pick at under £25. Includes a 24-hour timer, 3 heat settings, and overheat and tip-over protection. Read more

Devola 2000W Convector Heater with Remote

Devola 2000W Convector Heater with Remote

Feature-packed mid-range pick with digital thermostat, remote control, ECO mode, and turbo fan for fast warm-up. Under £50. Read more

Duronic HV220 2000W Micathermic Panel Heater

Duronic HV220 2000W Micathermic Panel Heater

Heats up in one minute using micathermic technology. Lighter than oil-filled radiators with 4.5 stars from over 560 reviews. Read more

Zanussi ZCVH4004B 2000W Convector Heater

Zanussi ZCVH4004B 2000W Convector Heater

Trusted Zanussi brand with a 2-year guarantee and black finish. Simple dial controls with frost and overheat protection. Read more

Dimplex HeatLite Smart Convector Heater 2kW

Dimplex HeatLite Smart Convector Heater 2kW

Premium Wi-Fi smart convector from Dimplex. Whisper-quiet with dimmable LED display, app control, and 24-hour timer. Read more

PIFCO 2kW White Convector Heater

PIFCO 2kW White Convector Heater

The highest-rated pick on this list at 4.7 stars. Three heat settings, adjustable thermostat, quiet operation, and carry handles. Read more

7 Best Convector Heaters

1. De’Longhi HSX2320 Slim Convector Heater

De’Longhi HSX2320 Slim Convector Heater

De’Longhi have been making convector heaters for decades, and the HSX2320 is the one that’s stood the test of time. At just under £60 with nearly 700 reviews behind it, this is the benchmark other convector heaters are measured against. The slim profile means it tucks away easily against a skirting board, and the three heat settings — 800W, 1,200W and 2,000W — give you sensible options for mild mornings and proper winter evenings.

The convection effect works well in rooms up to about 20m². Set the thermostat, leave it to cycle on and off, and you’ll find it holds a comfortable temperature without running constantly. It’s quiet enough to use in a bedroom, and the carry handles mean moving it between rooms takes no effort.

One thing to be realistic about: this is a straightforward heater. There’s no digital display, no timer, no app control. If you want those features, the Devola or Dimplex further down this list will suit you better. But if you want a proven, no-nonsense convector heater from a brand you can trust, the HSX2320 is the one to buy.

Features

  • 2,000W output with 3 heat settings (800W / 1,200W / 2,000W)
  • Slim profile — fits neatly along a wall
  • Adjustable thermostat dial
  • Carry handles for easy repositioning
  • Convection heating — silent operation, no fan
  • No installation required — plug and use
Pros:

  • Nearly 700 reviews — proven track record
  • Slim, unobtrusive design fits any room
  • Silent operation — no fan noise
  • Trusted brand with long heritage in convector heaters
Cons:

  • No timer, digital display or smart controls
  • Higher price than some basic alternatives

2. EMtronics 2000W Portable Electric Convector Heater

EMtronics 2000W Portable Electric Convector Heater

Under £25 for a 2,000W convector heater with a 24-hour timer and 468 reviews — the EMtronics is one of the best-value heaters you’ll find in this category. It does everything you actually need: three heat settings (750W, 1,250W, 2,000W), a variable thermostat dial, tip-over cut-out and overheat protection. The 24-hour timer is a genuine bonus at this price point.

It’s not glamorous, and you wouldn’t expect it to be. The dial controls are basic, the build won’t feel premium, and the white plastic casing is functional rather than attractive. But for a spare room, hallway, or home office you only heat occasionally, it’s hard to argue with the value. The EMtronics delivers honest performance at a price that’s difficult to beat.

Features

  • 2,000W with 3 heat settings (750W / 1,250W / 2,000W)
  • 24-hour programmable timer
  • Variable thermostat dial
  • Tip-over and overheat protection
  • Freestanding with carry handle
Pros:

  • Exceptional value at under £25
  • 24-hour timer included at this price
  • Strong review count — 468 ratings
Cons:

  • Basic dial controls, no digital display
  • Build quality reflects the price
  • No remote control or app connectivity

3. Devola 2000W Convector Heater with Digital Thermostat and Remote

Devola 2000W Convector Heater with Digital Thermostat and Remote

If you want a convector heater with proper controls rather than basic dial settings, the Devola DVCH2BL is where to look. The digital thermostat lets you set the temperature precisely between 5°C and 35°C, the LED display gives you clear feedback, and the remote control means you can adjust settings from the sofa. There’s also a 24-hour programmable timer and an ECO mode that maintains your target temperature without burning full power continuously.

The turbo fan mode is worth highlighting: when you need to warm a room quickly, it pushes heat out faster than pure convection can manage. It’s a feature you’ll use when you first come in from outside on a cold evening. Once the room is up to temperature, drop it back to the standard convection mode for quiet, efficient background heat.

The grey finish looks better than the white plastic of most budget convectors, and the build quality is noticeably sturdier. At under £50, it bridges the gap between basic and smart heaters very well.

Features

  • 2,000W with 4 modes: Low (1,250W), High (2,000W), Turbo Fan, ECO
  • Digital LED display and soft-touch controls
  • Remote control included
  • 24-hour programmable timer
  • Adjustable thermostat: 5°C–35°C
  • Tip-over protection, overheat protection, child lock
Pros:

  • Remote control and digital thermostat at under £50
  • Turbo fan mode for fast room warm-up
  • ECO mode reduces running costs
  • Child lock and triple safety protection
Cons:

  • Relatively new product — fewer long-term reviews
  • Turbo mode is audible — not a silent heater

4. Duronic HV220 2000W Micathermic Panel Heater

Duronic HV220 2000W Micathermic Panel Heater

The Duronic HV220 is technically a micathermic panel heater rather than a traditional convector, but it belongs in this list because it heats a room in exactly the same way — convecting warm air upwards — while doing it faster and more efficiently. Micathermic elements heat up in around one minute, which is significantly quicker than oil-filled radiators and noticeably quicker than a standard convector element.

The panel is lightweight and slim enough to stand against a wall or lean in a corner, and at 2,000W it can handle bedrooms and mid-sized living rooms without breaking a sweat. The 4.5-star rating from 561 reviews puts this among the most consistently well-regarded heaters in the category. Buyers particularly note how quickly it warms a room and how much lighter it is than an oil-filled radiator.

The tradeoff is price: at £69.99 it’s more expensive than basic convectors. But if speed of heating matters to you — particularly for a room you only heat for short periods — the Duronic’s rapid warm-up time justifies the premium over a standard convector element.

Features

  • 2,000W micathermic (mica panel) heating element
  • Heats up in approximately one minute
  • Combines radiant and convection heat output
  • Lightweight and slimline — easy to reposition
  • Thermostat and overheat protection
  • Freestanding with castors
Pros:

  • Heats up much faster than standard convectors
  • 4.5 stars from 561 reviews — excellent track record
  • Lighter than oil-filled radiators
  • Dual radiant and convection output for better heat distribution
Cons:

  • Higher price than standard convector heaters
  • Taller profile than slim convectors

5. Zanussi ZCVH4004B 2000W Electric Convector Heater

Zanussi ZCVH4004B 2000W Electric Convector Heater

Zanussi is a name people trust in white goods, and that brand confidence carries over to their convector heaters. The ZCVH4004B is a no-fuss 2kW heater with three heat settings (800W, 1,200W, 2,000W), frost protection, overheat cutoff, and a 2-year guarantee — that last point being something you won’t get with most cheaper alternatives.

The black finish sets it apart visually from the white-only field, and the slim build with integrated carry handles makes it easy to move. Controls are dial-based, which keeps it simple to use. There’s no timer or app control, but that’s not necessarily a problem — for a lounge or bedroom where you just want to set a temperature and forget about it, simple dial controls are often preferable.

At just over £80 it’s the priciest traditional convector on this list, but for the brand name, the 2-year guarantee, and the quality of build, it makes a reasonable case for itself.

Features

  • 2,000W with 3 heat settings (800W / 1,200W / 2,000W)
  • Frost protection mode
  • Overheat protection
  • 2-year guarantee (1 year standard + 1 year on registration)
  • Black finish with slim profile
  • Integrated carry handles
Pros:

  • Trusted Zanussi brand name
  • 2-year guarantee
  • Black finish — stands out from the crowd
Cons:

  • Most expensive traditional convector on this list
  • No timer, remote or digital display
  • Dial controls only

6. Dimplex HeatLite Smart Convector Heater 2kW

Dimplex HeatLite Smart Convector Heater 2kW

Dimplex is the definitive name in British electric heating, and the HeatLite Smart is their answer to the growing demand for app-controlled convector heaters. The headline feature is Wi-Fi control via a smartphone app, which lets you adjust temperature, set schedules, and manage heating from anywhere. Combined with the 24-hour timer and a thermostat range of 10°C to 35°C, you have genuine flexibility over when and how warm your room gets.

The whisper-quiet operation is worth singling out: at 4.6 stars from its early reviewers, buyers specifically comment on how silent this heater runs. The dimmable LED display is a thoughtful touch for bedroom use — you can dim it to avoid illuminating the room at night. Triple safety features (child lock, tilt shut-off, overheat protection) round out a well-specified package.

At £84.99 it’s the premium pick on this list, and the review count is still low as a relatively new product. But for Dimplex quality with smart home compatibility, it’s the one to choose if you want the best convector heater without compromise.

Features

  • 2,000W with Wi-Fi app control
  • Adjustable thermostat: 10°C–35°C
  • 24-hour programmable timer
  • Dimmable LED display for bedroom use
  • Whisper-quiet operation
  • Child lock, tilt shut-off, overheat protection
  • Covers rooms up to 20m²
Pros:

  • Wi-Fi app control — fully remote management
  • Whisper-quiet — ideal for bedrooms
  • Dimmable LED display won’t disturb sleep
  • Premium Dimplex build quality and brand trust
Cons:

  • Highest price on this list at £84.99
  • Fewer reviews than established models

7. PIFCO 2kW White Convector Heater

PIFCO 2kW White Convector Heater

The PIFCO sits between the budget EMtronics and the mid-range De’Longhi in both price and feature set. Three heat settings (750W, 1,250W, 2,000W), an adjustable thermostat, carry handles, and safety cutoffs make it a complete package, and the 4.7-star rating — the highest of any heater on this list — suggests buyers are genuinely pleased with it. The review count is low compared to the De’Longhi, so that rating may settle slightly as more reviews come in, but the early signals are encouraging.

It heats quickly, runs quietly, and looks smart in white. For a rental property, student flat, or guest bedroom where you want something simple and reliable without spending much, the PIFCO delivers.

Features

  • 2,000W with 3 heat settings (750W / 1,250W / 2,000W)
  • Adjustable thermostat dial
  • Power-on indicator light
  • Overheat and tip-over protection
  • Carry handles for easy portability
  • Clean white finish
Pros:

  • Highest star rating of all picks at 4.7 stars
  • Good mid-range price at under £36
  • Heats quickly, runs quietly
Cons:

  • Low review count — rating may shift over time
  • No timer or digital controls
  • Basic dial controls only

Key Takeaways

  • Convector heaters work by natural convection: cool air drawn in from the base passes over a heated element and rises as warm air from the top, creating a continuous circulation that gradually warms the whole room. There is no fan, so they are completely silent in operation. This makes them well-suited to bedrooms, quiet offices, and rooms where noise is a concern
  • Convector heaters are slower to raise room temperature than fan heaters but more energy-efficient for sustained heating. Because they warm the air passively, they continue to circulate heat for several minutes after the element switches off as residual warmth dissipates from the element housing
  • Lot 20 regulations require all UK electric heaters to include a digital thermostat, a 24/7 programmable timer, and an energy-saving feature. Buying a non-compliant convector heater means running it without the scheduling and temperature control that reduces waste. Most reputable convector heater brands sold in the UK now offer Lot 20-compliant models; check before buying
  • Wattage sizing: 100W per m² for well-insulated rooms. A 2kW convector heater suits rooms up to 20m²; a 2.5kW model handles up to 25m². At 27p/kWh, a 2kW convector costs 54p per hour at full output and 15 to 20p per hour with thermostat cycling in a well-insulated room
  • Wall-mounted convector heaters permanently replace skirting-level heating and are ideal for rooms without central heating. Freestanding models on castors are better if you want to move the heater between rooms

How Convector Heaters Differ from Fan Heaters and Infrared

The key difference is airflow mechanism. Fan heaters force air over the element with a motor, producing rapid but noisy heat distribution. Convector heaters rely on natural convection: the physics of warm air rising and cool air sinking creates a gentle, continuous circulation without any motor. The room warms more slowly but more evenly, and completely silently.

Infrared heaters warm surfaces and people directly without heating the air as a primary mechanism. Convectors heat the air first, which then warms the room’s occupants and surfaces. In rooms with high ceilings, good draught sealing, or consistent occupancy, convection heating is effective and efficient. In draughty or poorly sealed rooms, some heat is lost to cold air infiltration.

Oil-filled radiators are a type of convector heater where the element heats oil, which acts as a thermal buffer. Dry convectors (like traditional convector heaters or modern panel heaters) have no oil and respond faster to thermostat cycling. The practical difference in running cost is small when both use good thermostats.

Lot 20 and Energy Efficiency Features

Lot 20 (now UK Energy-Related Products regulations) sets minimum standards for electric heaters sold in the UK. Compliant models must include a precision digital thermostat (accurate to 1°C), a 24/7 programmable timer, and an energy-saving mode. The most useful energy-saving feature is open window detection: the heater monitors for a sudden temperature drop indicating a window has been opened, switches off automatically, and resumes when the temperature stabilises.

The energy and cost savings from Lot 20 features are real. A heater running to a precise thermostat on a 24/7 schedule uses significantly less electricity than one set to a fixed output and switched on and off manually. For a heater used daily through a UK winter, the difference in annual running costs can be £30 to £80, which justifies paying extra for a compliant model.

Wattage, Room Sizing, and Thermostat Settings

The 100W per m² rule applies at average UK ceiling height (2.4m) with reasonable insulation. For rooms with large windows, multiple external walls, or poor insulation, increase to 120 to 150W per m².

Convector heaters with good thermostats typically run the element at 50 to 60% duty cycle once the room reaches target temperature. This means a 2kW model’s effective running cost in a maintained 20°C room is around 15 to 20p per hour at 27p/kWh, not the 54p it would cost running continuously. The thermostat accuracy matters: a thermostat that overshoots by 2°C wastes more energy than one that holds precisely.

Wall-Mounted vs Freestanding

Wall-mounted convector heaters are fixed in position and typically hardwired into the ring main or a spur. They’re the right choice for rooms where you want permanent, unobtrusive heating that takes up no floor space. Most are slimline, match modern decor, and include smart thermostats or app control. They improve convection slightly because the heat rises freely without a floor-level base blocking airflow.

Freestanding convectors on castors are plug-in and movable, which is practical if you want to heat different rooms at different times or move the heater to where it’s needed. The castor base reduces the convection efficiency slightly because cool air intake is closer to the floor. Check that the power cable is long enough (1.5 to 2m is standard) to reach a socket without trailing dangerously across the floor.

Things to Keep in Mind Before Buying

Convectors should be positioned below windows where possible. Cold air descends from window glass even with double glazing; a convector directly below a window creates a warm air curtain that counteracts cold downdraught and improves comfort. This mirrors how central heating radiators are typically positioned.

Never place items on or directly against a convector heater. The top outlet must be clear for warm air to rise. Draped clothing or towels over a convector are a fire hazard; the element inside is hot enough to ignite some fabrics given sufficient contact time.

Types of Convector Heater

Standard freestanding convector heaters (1kW to 3kW, castors, plug-in) are the practical all-purpose choice for rooms with central heating gaps or occasional supplementary heating. Quiet, simple, available with basic or digital thermostats. Price range £25 to £100.

Lot 20-compliant panel convector heaters include digital thermostat, 24/7 timer, and open window detection as standard. The right choice for daily use as a primary heat source. Brands including De’Longhi, Dimplex, and Haverland. Price range £60 to £200.

Wall-mounted electric convector panels are slim, hardwired, and permanent. They blend into modern interiors and suit rooms where floor space is at a premium. Smart models connect to an app or smart home system. Price range £80 to £300.

Smart convector heaters with Wi-Fi control and voice assistant compatibility allow individual room scheduling and remote control. The best choice for properties using electricity as the primary heat source. Price range £100 to £350.

Convector Heater Buying Guide

Key Takeaways

  • Convector heaters work silently by drawing cool air through a heated element and releasing warm air through vents, making them one of the most unobtrusive room-heating options
  • They heat rooms faster than oil-filled radiators but lack the thermal mass, so the warmth fades more quickly once the element cuts out
  • The right wattage: 1,000W for rooms up to 10m², 1,500W for 10 to 15m², 2,000W for 15 to 25m²; older or poorly insulated rooms may need 25 to 30% more output
  • Running at 27p/kWh, a 2kW convector costs around 54p per hour at full power; a good thermostat cycling on and off can bring actual running costs closer to 15 to 25p per hour in practice
  • Micathermic heaters are a convector-infrared hybrid that heat up faster and run cooler than standard convectors, but cost more and are less portable
  • For permanent room heating, a Lot 20-compliant electric panel heater is usually a better long-term investment than a basic convector heater

What Is a Convector Heater?

A convector heater works through convection: cool air enters through vents at the base, passes over an electric heating element inside the unit, and exits as warm air through vents at the top. The warm air rises toward the ceiling, cools, falls back down, and the cycle repeats, gradually raising the room temperature. No fan is required. The process is entirely passive and completely silent.

This silence is one of the main reasons convector heaters remain popular for bedrooms and home offices. Unlike fan heaters, which force warm air around the room quickly but with audible noise, a convector heater produces warmth without any background hum or airflow sound. The trade-off is that convection is slower than forced air: a convector will take longer to warm a cold room than a fan heater of the same wattage.

Choosing the Right Wattage

A convector heater needs to match the heat loss of the room it is heating. For a modern, well-insulated UK home, 100W per m² is a reasonable starting point. A 15m² bedroom in a recent build needs around 1,500W of heating capacity. The same room in an older property with thin walls and single-glazed windows could need 2,000W or more.

Most convector heaters offer two or three power settings. It is better to buy a model rated slightly higher than you think you need and run it at the lower setting, than to buy one rated exactly at your room’s requirement and run it at full power continuously. The lower setting is quieter in terms of element noise and gentler on the element over its lifetime.

Thermostat and Timer Controls

A thermostat is the most important feature on a convector heater after the heating element itself. Without one, the heater runs at full power continuously and stops when you switch it off. With a thermostat, it cycles on and off to maintain the temperature you set, cutting running costs substantially.

Cheap convector heaters use mechanical dial thermostats, which are imprecise. The set temperature can drift by 2 to 4°C, meaning the heater may overshoot considerably before the element cuts out. Digital thermostats with 0.5°C increments are far more accurate and can reduce energy consumption noticeably in a room in daily use.

Programmable timers let you set the heater to come on before you wake or arrive home and switch off automatically. If you are considering a convector heater for regular daily use, a model with a 24-hour or 7-day programmable timer pays for its price premium quickly through reduced wasted heating.

Convector vs Fan Heater vs Panel Heater

These three categories are frequently confused, and each suits a different use case.

A convector heater is silent but slower to heat a room. It is best for rooms where background warmth is needed over an extended period and noise would be intrusive: bedrooms, home offices, sitting rooms in the evening.

A fan heater forces warm air around the room rapidly using an internal fan, which means a cold room warms noticeably in 5 to 10 minutes. The fan produces audible noise and continues running as long as the element is active. Best for rapid spot heating: a bathroom before a shower, a home office at the start of the day, a guest room that has been unheated for several days.

An electric panel heater, particularly a Lot 20-compliant model, combines electronic thermostat precision, programmable scheduling, and often open-window detection in a wall-mounted format. Panel heaters are quieter and more thermally efficient than basic convectors, but they are intended as permanent fixtures rather than portable heaters. If you want an appliance you can move from room to room, a convector or fan heater is more practical. If you want a permanent heating solution for a specific room, a panel heater is usually the better long-term choice.

Micathermic Heaters

Micathermic heaters are a specific type of electric heater that uses a mica heating element instead of a standard wire element. Mica heats up faster than a conventional element and operates at a lower surface temperature, meaning the heater body stays cooler to the touch than a standard convector. They also combine convection with a small amount of radiant heat output, giving a more immediate perceived warmth than pure convection.

The practical advantages: micathermic heaters heat a room faster than oil-filled radiators, run more quietly than fan heaters, and are thinner and lighter than oil-filled models of comparable output. The disadvantage is cost: a good micathermic heater costs significantly more than a basic convector of the same wattage. They are worth considering for living rooms where you want fast heat-up but without fan noise, particularly if space is limited.

Running Costs

Like all electric heaters, convector heaters convert every watt of electricity they use directly into heat. A 2,000W convector costs 54p per hour when the element is active at full power (at 27p/kWh). A 1,000W model costs 27p per hour.

The relevant figure for daily use is not the full-power cost but the average cost when the thermostat is cycling. In a reasonably insulated room, a convector thermostat set to 20°C might keep the element active for 30 to 40% of the time once the room has reached temperature. That reduces effective running costs to around 15 to 20p per hour for a 2kW model.

Running a 2kW convector for 6 hours a day over a 5-month UK winter (October to February) costs approximately £162 at full power, or closer to £60 to £80 if the thermostat is cycling normally. This makes the accuracy of the thermostat a significant practical factor over a full heating season.

Safety Features

Overheat protection is the most important safety feature on a convector heater. It cuts the element automatically if the heater’s internal temperature rises above a safe level, which can happen if the heater is placed too close to furniture, covered accidentally, or used in a room with restricted airflow.

Most convector heaters also include a tip-over switch that cuts power if the unit is knocked over. Check both features are present before buying, particularly if children or pets are in the household. Cheap models from unrecognised brands occasionally omit one or both. Keep a clear 50cm gap on all sides of the heater and never use it to dry clothing.

Things to Keep in Mind Before Buying

Convector heaters are portable by design and intended for occasional, flexible use. If you need a permanent heating solution for a specific room, a wall-mounted electric panel heater is almost always a better investment: more energy-efficient, neater, and with better controls. A convector heater plugged in on the floor is the right choice when flexibility matters more than permanence.

Consider how the heater will be stored when not in use. Oil-filled radiators are bulky. Fan heaters are compact. Convectors fall in the middle. If your home has limited storage, a slimmer panel-style convector is easier to stow than a wider 11-fin type.

Types of Convector Heater

Standard convector heaters are the most common format: a box-shaped unit with a wire or PTC ceramic element and passive air circulation through grilles at the base and top. Available in 1kW and 2kW models from most major appliance brands. Inexpensive and reliable. Price range £25 to £80.

Wall-mounted convectors are the same technology in a fixed-installation housing. Cleaner appearance, frees up floor space, slightly higher heat output per footprint. Require electrical connection. Often used in hallways, bedrooms, and small utility spaces. Price range £50 to £150.

Micathermic heaters use mica panels for faster heat-up and a slimmer profile. The panel design is more aesthetically neutral than a standard convector box. Suitable for living rooms and bedrooms. Price range £60 to £200.

Slim panel convectors are a hybrid between a convector and a panel heater: wall-mountable or free-standing, low-profile, often with a digital thermostat and timer. Positioned as a step up from basic convectors without the full commitment of a hardwired panel heater. Price range £60 to £180.

Case Study: Heating a Home Office in a Victorian Terrace

Background

A homeowner in a Victorian terrace in South Yorkshire used a single portable convector heater to heat a converted box room that served as their home office. The room measured approximately 8m² with a single-glazed sash window and solid brick walls — poor insulation by modern standards. They worked from home five days a week and needed the room to reach a comfortable working temperature each morning by 8:30am.

Project Overview

Their existing oil-filled radiator took around 45 minutes to properly warm the room, which meant turning it on before getting out of bed. They wanted something that responded faster and could be controlled without leaving the desk.

Implementation

They replaced the oil-filled radiator with a 2,000W convector heater with a 24-hour timer, setting it to come on at 7:45am each weekday at 1,500W. On particularly cold mornings they could manually boost to full 2,000W. A draught excluder on the door and secondary glazing film on the sash window helped retain heat.

Results

The room reached working temperature by 8:15am, 15 minutes ahead of target. Because the convector responded in minutes rather than 45 minutes, the timer could be set later — reducing the total heating window by around 35 minutes per day. Estimated daily energy use fell from approximately 1.8kWh to 1.2kWh for the morning heating period, saving around £0.15 per working day at current rates.

Expert Insights From Our Heating Engineers About Convector Heaters

One of our senior heating engineers with over 18 years of experience in domestic and commercial electric heating shares their perspective on convector heaters in the current market.

“The biggest mistake I see people make with convector heaters is choosing one based purely on price and then complaining about running costs. A £22 heater isn’t inherently more expensive to run than a £70 one — they’re both 2,000W. What matters is whether the thermostat works accurately and whether the heater is sized correctly for the room. An undersized heater runs at full power constantly trying to reach temperature and that’s when bills climb.

The other thing worth knowing is that convectors perform better in well-draught-proofed rooms than fan heaters do. Because they rely on natural convection currents, a room that leaks warm air quickly will make a convector work much harder than a fan heater that can actively push warmth to different parts of the space. Sort your door seals and window draughts first, then choose your heater.

For anyone who genuinely wants to reduce running costs rather than just save on the purchase price, a model with a good digital thermostat — one that holds temperature accurately rather than cycling by 2 or 3 degrees — will pay for itself over a winter. The difference between a thermostat that cycles at ±1°C and one that cycles at ±3°C is meaningful over months of daily use.”

Frequently Asked Questions

Are convector heaters expensive to run?

At full power, a 2,000W convector heater costs around 50p per hour at the current UK unit rate of approximately 25p/kWh. In practice, with a thermostat cycling the heater on and off to maintain room temperature, average consumption in a well-insulated room is considerably lower — often 200–500W per hour once the room is up to temperature. Running costs depend heavily on how well your room retains heat, not just the heater’s wattage.

Can I leave a convector heater on overnight?

It’s generally safe to leave a convector heater on overnight provided it has overheat protection and is used correctly — placed on a hard floor away from curtains, furniture and bedding, and not covered. That said, it’s more economical to use a timer to turn it off once the room reaches sleeping temperature, or to reduce it to a lower setting overnight. Never leave any portable heater on overnight in a room with young children without supervision.

What size convector heater do I need for my room?

A rough guide for UK homes: allow 100W per square metre in a well-insulated modern room, or up to 150W per square metre in an older, poorly insulated one. For a 15m² bedroom with average insulation, a 2,000W convector heater will comfortably maintain temperature. For rooms smaller than 10m², a 1,500W or 1,000W model will often be sufficient and cheaper to run.

How is a convector heater different from a fan heater?

The main practical difference is noise. Convector heaters rely on natural convection — warm air rising without a fan — so they operate in near-silence. Fan heaters use a fan to actively blow heated air around the room, which means they warm a space faster but produce constant fan noise. For bedrooms, offices, or anywhere noise matters, a convector heater is the better choice. For instant heat in a room you use briefly, a fan heater wins on speed.

Do convector heaters dry out the air?

Less than fan heaters do. The main cause of dry air from electric heaters is the high-temperature element blasting through air at speed — which is more characteristic of fan heaters than convectors. Convectors heat air more gently and without a fan, so the effect on humidity is less pronounced. If dry air is a concern, a convector is a better choice than a fan heater, though you may still benefit from a small humidifier in very cold, well-sealed rooms.

Are convector heaters safe to use in a bedroom?

Yes, convector heaters are among the safer options for bedroom use. The absence of a fan means no hot air is being directed at bedding or curtains. Look for a model with overheat protection and tip-over cutoff as minimum safety requirements. Keep the heater at least 1 metre from any soft furnishings, never place anything on top of it, and use a timer so it doesn’t run continuously while you sleep.

What is the difference between a convector heater and a panel heater?

Panel heaters are typically designed for wall mounting and are often sold as permanent or semi-permanent installations, with LOT 20-compliant electronic thermostats and more precise temperature control. Convector heaters are generally freestanding and portable. Both heat by convection, but panel heaters tend to hold temperature more accurately and may be more energy-efficient for rooms you heat daily. If you’re looking for a permanent solution, a panel heater is worth considering; for a portable option you can move between rooms, a convector heater is more practical.

Summing Up

The De’Longhi HSX2320 remains our top pick for most people: proven, quiet, slim and reliable, with nearly 700 reviews to back it up. If budget is the priority, the EMtronics 2000W at under £25 delivers honest performance that’s hard to argue with. For a feature-rich mid-range option, the Devola DVCH2BL brings a digital thermostat, remote control and ECO mode at under £50. And if you want the best convector heater without any compromise, the Dimplex HeatLite Smart is the one to go for.

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