How to Choose the Right Radiator for an Open Plan Living Space

Open plan living spaces have become one of the most popular interior design trends of recent years. Knocking down walls to create a spacious kitchen-dining-living area makes the home feel brighter, more social, and more connected. 

Yet while these spaces look beautiful, they can be surprisingly tricky to heat. Without walls to contain warmth and a large open space.

Heat can drift away from where you need it most, leaving your kitchen cosy and your sofa area a little chilly. Choosing the right radiator set-up can make all the difference between a space that feels comfortable and one that never quite gets warm enough. 

Here’s everything you need to know to heat your open plan home efficiently, stylishly, and effectively.

Heating an open-plan room presents a few unique challenges. With fewer internal walls, heat has more space to escape and circulate unevenly, meaning warm air can collect in one area while others stay cool. Large expanses of glass, high ceilings, and connecting hallways can make it even harder to maintain a consistent temperature. That’s why radiators for open spaces need to deliver higher output, faster heat distribution, and flexible control - ensuring every corner of the room feels comfortably warm, no matter how big or open the layout. 

Before thinking about style or colour, it’s crucial to calculate how much heat is required to warm your open-plan area effectively. The larger the space and the higher the ceiling, the greater the heat output required. 

A good first step is to use our BTU Calculator to find the total Heat Output (BTUs) your room needs. This calculation considers: 

• Room Type
• Glazing Type 
• How Exposed the Room is to the elements 
• Room Dimensions

In most open-plan layouts, a single radiator won’t be enough. Instead, multiple radiators positioned strategically will heat the room more evenly. The BTU Calculation will show you the combined heat output of all radiators required for your room - divide the required output by the number of radiators needed. You can also divide the space into functional zones (kitchen, dining, lounge) and fit each with a suitable radiator, using thermostatic valves to control them individually.

You can learn more about output here: Calculating your BTU

Open-plan living gives you design freedom - and radiators can play a big part in defining each area’s character. 

Aluminium radiators are an excellent choice for open-plan spaces thanks to their rapid heat-up time and outstanding heat conduction. Unlike steel radiators, aluminium reacts much faster to temperature changes, meaning it warms large areas more quickly and efficiently - ideal for open rooms where heat loss is more noticeable. They’re also lightweight, making them suitable for installation on larger walls or in vertical formats, and their high efficiency works particularly well with modern, low-temperature heating systems, such as heat pumps. This makes aluminium radiators a smart, future-proof solution for heating expansive, open living areas.

We recommend:

• Termal: The Termal radiator exemplifies modern sophistication and energy efficiency, offering a seamless blend of form and function for contemporary living spaces. Crafted from high-quality aluminium, this radiator features a sleek semi-circular tube design. 
• Gravina: The Gravina radiator exemplifies the perfect fusion of functionality and contemporary design, making it an ideal choice for modern homes. Its sleek rectangular tube design, complemented by flared end sections, adds a touch of sophistication to any space. 
• Torre: Sleek and stylish, the Torré range offers versatility coupled with exceptional performance. Its smooth, flat design and modest profile mean it works equally well in a large living room or a narrow hallway.

Shop our full Aluminium Range HERE

When wall space is limited, a vertical radiator provides excellent heat output without occupying valuable horizontal space. They make great focal points and can visually balance different zones, for example, placing one between the kitchen and dining area to subtly divide the space. 

We recommend:

• Canto: The Canto takes its inspiration from the traditional ‘schoolhouse’ Cast Iron radiators. Their sectional format and combination of modern styling and materials create a design that projects a traditional aesthetic.  
• Ellipsis: If you are looking to add a distinctive modern statement to your bathroom, kitchen, hallway or cloakroom, the Ellipsis Vertical Tube Radiator can help you achieve your desired look. They are excellent conductors and maintain a generous level of heat.
• Oglio: The Oglio Radiator artfully combines traditional aesthetics with modern efficiency, offering an exquisite solution for heating needs. Crafted with a contemporary tube design influenced by classic cast sections, this radiator seamlessly complements any interior style. 

Shop our Vertical Radiators HERE

You can never have too much choice. There are up to 3 million combinations to choose from, allowing you to make the perfect radiator for you.  They work well for open-plan lounge or dining areas where you want the heating to blend into the layout.

We recommend:

• Ancona Made to Order: Create the perfect radiator for your space by combining a range of styles and accessories from the Ancona® range. Made in Italy to your exact requirements, choose from different column styles, cast or welded feet mounting options, and over 200 colours to select from.
• Ancona Bare Metal Lacquer: Stylish and individual, the bare metal lacquer finish of this Ancona® will add personality to any room you place it in. It's ideal for those who want to create a stripped-back, industrial look for their home. All the lacquered Anconas® are hand-finished with distinctive weld and sanding marks.
• Ancona Tinted Lacquer: Stylish and individual, the machined raw finish of this Ancona® will add personality to any room you place it in. It's ideal for those who want to create a stripped-back, industrial look for their home. All lacquered Anconas® are hand-finished and will have distinctive weld and sanding marks. 

Heating doesn't have to be just functional; it can enhance the overall look of your home. Open-plan rooms often feature modern, minimalist, or industrial aesthetics, so your radiator choice can contribute to that style. 

Popular options include: 

Flat Panel Radiators - Sleek flat-fronted radiators for stylish, space-saving home heating.

• Mezzola Aluminium Radiator: The Mezzola radiator combines sophisticated design with advanced functionality to meet the demands of modern interiors. Crafted from high-quality aluminium, this radiator offers superior energy efficiency. 
• VIP Sectional Radiator: Strong angles and clear lines make these unpretentious, modern wall radiators essential for a new build or a contemporary-styled home. Made from aluminium, it will quickly heat up and deliver a consistent heat output, all while remaining economical to run.

Modern Designer Radiators - The perfect combination of stunning aesthetics and efficient warmth.

• Relax Hybrid Fan-Assisted Radiator: The Relax Hybrid innovative heating and cooling combination, with a fan coil-assisted radiator and cooling functions. Heats in winter and with appropriate system specification, acts as a cooling unit in summer. Heat pump-compatible radiator.
• Piano Flat Tube Radiator: From the bedroom to the living room or kitchen, the smooth surface and flat lines of the Piano Horizontal radiator will look perfect in any room. A great space-saving solution, the Piano adds a discrete contemporary feel to your home.
• Sax Rectangle Tube Radiator: The Sax delivers a confident and defining statement. Its strong lines and geometric styling make it distinctively different. If you’re looking for something a bit different, then the Sax is a great choice and provides flexibility to achieve your outputs.

Open spaces don’t always have “obvious” radiator locations, so positioning is key. To heat efficiently: 

• Install radiators on external walls to reduce cold spots
• Avoid hiding radiators behind furniture
• Vertical radiators are perfect for rooms with limited wall space, giving you strong, reliable heat without taking up too much width  

If you have large bi-fold or patio doors, pairing radiators on opposite walls can help create a thermal barrier and prevent heat loss. 

Thermostatic Radiator Valves (TRVs) allow you to set different temperatures in each area, ideal for open plan living where one part of the room might warm up faster than another. 
Smart controls and Wi-Fi thermostats can also help reduce energy usage and ensure your home is always heated when you need it.

Shop our range of Manual and Thermostatic Valves HERE.

✔ Bigger rooms usually need multiple radiators 

✔ Use BTU calculations before choosing a style 

✔ Vertical radiators save space and add impact 

✔ Designer finishes let heating become part of your interior style 

✔ TRVs and smart controls improve comfort and efficiency 

Explore our range of horizontal, vertical, and designer radiators designed specifically for modern open plan living. With options in every style, size, and heat output, you can heat your space beautifully and efficiently.

Should you need any help or advice, please do not hesitate to contact our Customer Service Department by telephone or email: 

Email: info@theradiatorcompany.co.uk

Tel: 01342 302250