Radiator Buying Guide: How to Choose the Right Heating for Your Space

26th Nov 2024

Brushed brass vertical radiator in bathroom

Choosing the right radiator for your home can be a game-changer when it comes to keeping it toasty. Whether you're upgrading an old model or furnishing a brand-new space, radiators have come a long way from the traditional white panels we're all familiar with. Now, there's a wide range of options to suit every aesthetic.

With so many radiators to choose from, it can be tricky to find the best one for you. We've spoken with Brian Toward – Chief Executive Officer (CEO) at Wholesale Domestic – to guide you through the process. Brian will share his expert advice on everything from picking the right size to choosing the ideal radiator valve for your needs.

Types of radiator

When it comes to radiators, there's no shortage of options. Finding a suitable model depends on your home's heating requirements and personal style. Whether you're working with a compact space or a larger bathroom, finding the perfect radiator is often the finishing touch that brings your decor together.

In this section, we'll explore the different types of radiators available, helping you decide which is the best fit for your home.

Column radiators

Black vertical column radiator in avant garde bathroom

Column radiators are a versatile option that supplies powerful heating with a classic design we all know well. They have multiple vertical columns that circulate hot water from your central heating system, offering an impressive heat output that’s ideal for warming larger rooms with high ceilings. Their timeless design complements both traditional and modern interiors, making them a popular choice all over the world.

One key benefit of column radiators is their flexibility. Depending on the amount of wall and floor space available, they can be mounted or left floor-standing. This offers an excellent choice for various room layouts, from spacious living areas to more compact ensuite bathrooms.

Column radiators are available in a wide range of sizes and finishes, from sleek, contemporary colours to a more vintage aesthetic. This means you can easily personalise your heating to complement the rest of your decor.

Convector radiators

Classic white convector radiator

Convector radiators are another common style found in many homes. They work by circulating hot water through a series of panels that contain 'fins' (also known as convectors), which help spread heat more effectively. The fins increase the radiator's surface area, allowing them to warm up your room quickly without taking up too much wall space.

Their low-profile design means convector radiators can fit neatly into any room. They’re typically wall-mounted, available in a wide range of sizes, and are known for their easy installation – providing a great fit for any area in the home.

Convector radiators are available in single, double, or even triple-panel options, meaning you can choose the specific level of heating you need for each room.

Designer radiators

A white designer style radiator in the dining room

Designer radiators usually feature a sleek, contemporary design. They can instantly elevate the look of any room while still offering efficient heat distribution.

These radiators come in a variety of luxury finishes that aren't often seen on standard radiators – including matt and metallic options in colours like gold, brass, or black – adding a bold design element to your space. Some models even include additional features, like handy built-in towel rails, making them perfect for bathrooms with limited storage.

While their standout feature may be their appearance, designer radiators also deliver when it comes to keeping your home warm.

Floor-standing radiators

A black traditional floor standing radiator

Floor-standing radiators are a great choice when you're working with rooms that have limited wall space or if you're trying to create a standout design feature. As the name suggests, these radiators are fitted directly onto the floor.

They’re often available in traditional materials such as cast iron, which can either be painted to suit your home's decor or left unfinished for a vintage look.

In addition to their classic design, floor-standing radiators offer excellent heat output and are versatile enough to work in living rooms, hallways, and bathrooms. With their sturdy build and unique design, these radiators add warmth and character to any home, though this does typically come at a higher price point than some other models.

Horizontal radiators

A modern brushed brass horizontal radiator

Horizontal radiators are a classic choice and remain one of the most popular radiator styles. They're designed to fit neatly along walls and under window frames, offering an efficient way to heat rooms without taking up much vertical space. Some models provide greater flexibility and are compatible with vertical and horizontal wall mounting to suit your room's layout and wall fixtures.

Available in various sizes and finishes, including monochromatic colours like white, anthracite grey, and black, horizontal radiators can be easily integrated into traditional and contemporary designs.

Panel radiators

Black vertical panel radiator in bathroom setting

Panel radiators are a popular option, known for their modern design that works well in minimalist home settings. They circulate hot water through flat panels, releasing heat into the room. Their design makes them excellent for heat distribution, offering a reliable choice for maintaining a comfortable temperature in living spaces, bedrooms, and more.

One of the key benefits of panel radiators is their simplicity. They're designed with a slim profile, making them ideal for smaller rooms where you want to avoid bulky radiators getting in the way.

Available in single and double-panel configurations, panel radiators can be tailored to suit your home's size and heating needs.

Type 11 radiators

White type 11 radiator

Type 11 radiators, also known as single-panel, single-convector radiators, are designed to provide efficient heating in smaller rooms while being much cheaper to run than their double or triple-panelled counterparts. They work by circulating hot water through a single panel and a single set of convector fins, which improve airflow around the radiator and increase the heat output.

The slim design of these radiators makes them a fantastic option for tight spaces where you want a low-profile heating solution. While they may not provide the same heat output as a double-panel model, Type 11 radiators are perfect for maintaining warmth in rooms that don't require as much heating power.

Type 21 radiators

Classic white type 21 radiator

'Type 21 radiator' is another name for double-panel, single-convector radiators. These models feature two panels but only one set of convector fins between them, which helps increase heat output without adding too much bulk. They’re a great option for medium-sized rooms that need more warmth than a Type 11 can provide.

The dual-panel design creates a larger surface area, which improves heat transfer. The single set of convector fins also helps circulate warm air efficiently throughout the room, ensuring you enjoy consistent and effective heating.

Type 22 radiators

White type 22 radiator

Type 22 radiators, often called double-panel, double-convector radiators, are built to provide maximum heat output. With two panels and two sets of convector fins, they’re designed to circulate warm air more effectively throughout larger rooms. This increased surface area and airflow make Type 22 radiators an excellent choice for open areas or rooms with tall ceilings that require higher levels of warmth.

Thanks to their double convector design, they generate a significant amount of heat while maintaining a compact appearance.

What to consider when buying a radiator

Choosing the right radiator for your home goes beyond simply picking a design you like. There’s several important factors to think about to find the perfect balance between style, performance, and practicality.

In this section, we'll explain the key things to remember when buying a radiator to ensure it meets your needs and enhances your home.

1. Radiator size

Getting the size of your radiator right is crucial to make sure it heats your room properly. If your radiator is too small, it may struggle to heat the entire area. On the other hand, a radiator that's too large can overwhelm the room, both visually and in terms of heat output.

Most radiators come in a wide range of sizes to suit different room dimensions. At Wholesale Domestic, our radiators range from 300mm to 1800mm in both height and width, offering a variety of options to complement your home.

2. Materials

The material your radiator is made from plays a crucial role in how much heat it puts out, alongside its durability and overall style. Different materials have varying heat conductivity, affecting how quickly a radiator heats up and cools down. The most common radiator materials are mild steel, stainless steel, and cast iron – each offering its own benefits.

Brian explains: "The material of your radiator is about more than looks. Stainless steel radiators, for example, are super durable and resistant to rust, so they're perfect for humid spots like bathrooms and kitchens. Cast iron, on the other hand, holds onto heat for longer – great for keeping places you spend a lot of time, like the living room, cosy even after the heating's been turned off."

3. Number of radiators

In some cases, one radiator might not be enough to heat an entire room – especially if the area is large or has an awkward layout. Instead of relying on one oversized radiator, installing multiple smaller units can provide more balanced heating. Adding an extra radiator might be worth considering for rooms with more than one window or a large floor area.

"For larger rooms or spaces with unusual layouts, having multiple radiators can make a big difference. You can place radiators strategically to ensure every corner of the room stays warm, avoiding the uneven heating that can come with relying on a single unit," says Brian.

"Using two or more radiators also gives you more flexibility in controlling the temperature of different areas of the room. You can turn one radiator down while keeping the other at full heat, matching the level of heat to your needs," he adds.

4. Heat output (BTU)

Every home is different when it comes to the level of heat needed to effectively warm a room. To find the ideal heat output for your space, you'll need to work out the room's BTU (British Thermal Unit) requirement using an online calculator. Each radiator has a BTU rating, which represents how much heat it can produce, helping you make your decision.

Brian explains: "BTU is an essential measurement when choosing a new radiator. The higher the BTU requirement, the larger the radiator or the more convectors needed to heat the room efficiently."

"It's also important to factor in the room size and layout when choosing your radiator. Building elements like ceiling height, window type, and amount of insulation play a role in determining the heat required. For example, larger windows can lead to more heat loss, meaning you might need a radiator with a higher output to compensate.”

How to choose the right radiator valves

Radiator valves play a vital role in controlling the flow of water and heat through your radiator. The right one will improve your radiator's efficiency and enhance its appearance.

Radiator valves come in different finishes and colours, with two main temperature control methods available: thermostatic and manual.

Types of radiator valve

Radiator valves come in a variety of styles, each designed to suit different heating needs and preferences. Here are the most common types:

Thermostatic radiator valves

Thermostatic radiator valves (TRVs) automatically adjust the water flow to the radiator based on the room's temperature, making them more energy-efficient than manual valves. They’re ideal if you want precise control over the temperature in each room without manually adjusting each valve.

Manual control valve

Manual valves are the classic option for controlling your radiator. They allow you to turn the radiator on or off and manually adjust the flow of water to control the temperature of a room. These valves are perfect if you're looking for a cost-effective, no-fuss solution and don't need to change the temperature in individual rooms frequently.

While these valves are less energy-efficient than TRVs, they're a solid choice for high-traffic areas like living rooms or hallways where consistent heat is important.

Lockshield valve

Lockshield valves balance your heating system, and every radiator needs one. They control the amount of water that leaves the radiator, ensuring that your entire system heats up evenly. Once you've set the valve in place, it rarely needs adjusting – perfect for maintaining consistent performance throughout your home with minimal effort on your part.

Radiator bleed valve

Bleed valves are the key to keeping your radiators running efficiently. Over time, air can become trapped inside radiators, reducing their heating ability and blocking hot water from flowing freely. The bleed valve allows you to release this air and get your radiator heating up evenly again.

For more information about how to fit your radiator valve, see our guide.

Frequently asked questions

What size radiator do I need?

The size of the radiator you need mostly depends on the size of the room you plan to put it in. Larger rooms or areas with poor insulation will need a radiator with a higher BTU output, while more compact, well-insulated spaces can be heated with a smaller radiator.

For example, a small bathroom might only require a radiator with an output of around 1,500 BTUs, whereas a large living room with multiple windows could easily need 5,000 BTUs or more.

Can you paint a radiator?

Yes, you can paint a radiator to touch up its appearance or change the colour to match your decor. When doing this, it's important to use heat-resistant radiator paint that can withstand high temperatures. While it may be tempting to use regular wall emulsion, this can melt when exposed to heat – leaving the radiator sticky to the touch.

Before painting the radiator, clean and sand the surface to ensure the paint adheres properly. It's also best to do this while the radiator is off and cool to the touch.

However, the safe option is to buy the colour you want from the start. Wholesale Domestic offers various colours, from sleek grey and black to brushed brass, so you can find the perfect match without needing to paint.

Why is my radiator not heating up?

A cold radiator can be annoying, but there’s usually a simple reason.

Brian explains: “If your radiator isn't heating up properly, the most likely cause is trapped air inside the system. When air gets into the radiator, it stops the water from circulating as it should, leaving parts of the radiator cold to touch. This can usually be solved by bleeding the radiator, which releases the trapped air and allows the radiator to heat up fully again.”

“If you've already tried bleeding the radiator and it hasn't helped, there may be an issue with the valves or the central heating system itself – which may require a plumber's help,” he adds.

The best radiators for every home

Finding the right radiator for your home depends on a few key factors. Whether you're after something budget-friendly, eye-catching, or efficient for larger rooms, there are plenty of versatile styles to choose from. Below are some of Brian Toward’s recommendations.

The best budget-friendly radiator

Kartell K-RAD Kompact Type 11 Single Convector Horizontal Radiator

"If you're looking to heat your home on a budget, this Kartell horizontal radiator is an excellent choice," says Brian. "The simple white design works well in just about any room, and the compact size makes it easy to fit into smaller spaces without sacrificing heat output."

"Despite its affordable price, this radiator is built to last with a durable metal construction and a glossy finish. It's a fantastic option for anyone who needs reliable warmth in a smaller room but doesn't want to spend a fortune."

Best large radiator

Kartell K-Flat Premium Kompact Type 11 Single Panel Horizontal Radiator

"For larger rooms that need more powerful heating, this Kartell radiator offers generous heating with a broader surface area," says Brian. "With its 600mm height and 1800mm length, it provides plenty of heat for bigger spaces like living rooms or open-plan areas. Plus, the sleek panel design gives it a modern look that works well in contemporary homes."

"What really shines with this radiator is how it combines impressive size with a minimalist design. It's wall-mounted with no visible pipes, so it keeps things clean and uncluttered. If you're looking for something that can handle a bigger room while still looking stylish, this is a top pick.”

Best radiator for modern bathrooms

Cortes White 1600mm x 360mm Single Panel Radiator with Towel Rail

"If you're looking for something sleek and modern for your bathroom, the Cortes White 1600mm x 360mm Single Panel Radiator is a fantastic option," Brian says. "The vertical design not only saves wall space but also adds a contemporary touch to any bathroom. It even comes with a built-in towel rail ideal for keeping hand towels cosy or for warming your towel before you step out of the shower."

“Its simple white colour also blends easily with your existing decor for a minimalistic look that keeps your home warm without getting in the way of your design,” he adds.

Best radiator for small spaces

Hudson White 600mm x 452mm Single Panel Radiator

"Finding the right radiator for a tight area can be a challenge, but the Hudson 600mm x 452mm Single Panel Radiator is a great option for heating smaller rooms," says Brian. "What's great about it is how efficiently it uses space. At just 452mm wide, it fits easily into narrow areas, but its 600mm height still provides plenty of heat.”

He adds: “Its sleek, flat-bar design and compact size make it ideal for rooms like ensuite bathrooms or hallways with limited room for a larger unit. Plus, the white enamel finish gives it a clean, modern look that blends effortlessly into any home.”

Shop radiators for every room at Wholesale Domestic

Now that we've taken a look at the wide variety of radiators available, it's time to choose the perfect fit for your home. At Wholesale Domestic, we have a wide range of radiators to match every style – whether you're after something subtle and modern or a more traditional design.

If you're upgrading your entire heating system or just replacing a single unit, we also stock a great selection of accessories to help complete the look. From radiator brackets and valves to heated towel rails and pipe covers, we've got everything you need to create a warm, stylish space.

Not sure which radiator or accessory is right for you? Our team is always on hand to help you find the perfect model. For advice, get in contact anytime. Or, take a look at our blog for further inspiration.