Traditional column radiator in sandstone.

Bay window radiator ideas for beautiful interiors

Written by
Nick Duggan

Bay windows are a distinctive feature in many homes, bringing natural light and character to a room. A radiator beneath the window can add warmth and style while making the most of the space. From classic to contemporary, there’s a radiator to suit every bay window.

Understanding bay windows

The bay window has a long history but still appears in property design today, added to rooms to draw in light, provide architectural interest and give panoramic views into the outside world. From small radius nooks and sweeping arcs to angular designs that fit perfectly into modern homes, the versatility of the bay window means that it can become a prominent and beautiful feature in any home.

Curved vs angled bay windows

There are many different types of bay windows, reflecting the architectural styles of the periods in which they were built.

White Tuba 6 Column traditional style radiator in angled bay window on feet

Tuba 6 Column Radiator in welded feet

Victorian and Edwardian bay windows

“When people think of Edwardian and Victorian properties, they usually picture the classic three-sided canted bay or rectangular box bay window with sash windows. We often have customers coming to us looking for a traditional-style radiator for these spaces.” says Nick Duggan, Managing Director, The Radiator Centre.

There are typically three options for heating this type of bay. You can install an angled radiator that follows the shape of the window, place a radiator on the wall facing the room, or install radiators on all three sides and link them together with pipework.

Historically, radiators were positioned directly under the window to combat draughts from poorly insulated single-glazed windows. However, this approach is no longer always essential.

Bay windows with shutters and curved Tuba Steel Column Traditional radiator finished in white on wooden flooring

“Unless you’re in a listed property or conservation area, most homeowners have replaced single glazed windows with double or triple-glazed sash equivalents. That means the traditional radiator rules can be a little more flexible. You don’t have to put a radiator in the bay if the insulation is good, but many people still like the idea of keeping the traditional look with a radiator beneath the window.”

Nick Duggan, Managing Director, The Radiator Centre.

Mercury 4 Column Cast Iron

Georgian bay windows

Georgian bay windows are iconic in cities such as Bath, Bristol, Brighton and Cheltenham. These gently sweeping bays can be formed from a series of windows or a fully glazed curve.

“Unlike a three-sided bay where you can place a piece of furniture, Georgian bays can be trickier spaces to work with in that way. You might see a statement chair or even a telescope placed there, but a radiator is often a great option. It keeps the space warm and cosy while making use of a wall that might otherwise go unused.” says Nick.

Curved Bay window Tuba Steel Column Radiator below shuttered white windows and grey wall

Tuba Column Radiator Curved to fit and angled bay window.

1930s bay windows

For homes built in the 1930s, both box and curved bay windows became extremely popular, and these bays tend to be much bigger compared to those in Victorian terrace homes.

“That extra space opens up more design options. You could install an angled or curved radiator that follows the shape of the bay, and use the space for a statement radiator and furniture to become a feature within the room. Combining these with wooden shutters means you benefit from the insulating properties of these and a highly efficient radiator.” says Nick Duggan, Managing Director, The Radiator Centre.

“Curved radiators in these properties can be more challenging, as the depth of the radiator is often restricted by the angle of the curve.” adds Nick.

Utilising your space with bay window radiators

While bay windows create additional space in a room, their shape can make it tricky to place some types of furniture, which may not fit well and look out of place, especially if they can’t be placed directly against the wall.

Nick, who works closely with customers on exactly these kinds of challenges, shares his thoughts.

“A snug chair could fit brilliantly in the bay window, but if you’ve got a radiator behind it, the chair might benefit more than the room. Picking your furniture carefully for the space is important, but you may also choose a radiator that makes a statement and becomes part of the aesthetic rather than something hidden away.”

“The other thing people worry about is curtains. Full-length curtains look great, but pull them closed and you may not benefit from your radiator at all. We’ve seen clients combine blinds and curtains, closing the blinds at night and using the curtains as dressing to soften the look.”

“As with anything in an older property, standard measurements are rarely standard. Every home is slightly different. This is where a radiator made to fit the space precisely, whether that’s an angled radiator, a bay window radiator, or standard radiators piped together, can frame the bay window rather than making it feel like a problem area. Choosing a complementary or contrasting colour can help turn it into a feature.”

Positioning a radiator within the bay can also be practical. By placing it adjacent to the exterior wall, you can free up space for other furniture arrangements and optimise the layout, helping the room feel larger and more open. You’ll also be adding warmth to an area where heat typically escapes the quickest, helping keep the room cosy when temperatures drop.

Emmeline III 470 Cast Iron radiator Little Greene Affogato in bay window

Emmeline III Cast Iron Radiator in Little Greene Affogato

“The appeal of bay windows hasn’t diminished. They add architectural interest to a space and give homeowners the opportunity to be more experimental with their choice of radiator. A well-chosen radiator can draw the eye in and turn the bay window into a centrepiece in its own right.”

Nick Duggan, The Radiator Centre

Curved radiators for bay windows

Steel column radiators are by far the most popular choice for bay windows. They offer the versatility to feel classic or contemporary depending on your interior styling preferences.

The Tuba curved bay window and angled bay window radiator ranges are available in a wide range of colours. Blend it into the wall colour, choose a contrast, or select a more unusual texture or finish.

Nick adds, “We always encourage customers to come into the showroom with their swatches and paint colours so we can help them choose what will work best. At the moment there’s a trend to move away from greys towards warm, cosy neutrals, and that really opens up the possibilities if that’s something you want to explore.”

“The temptation is to fill the whole bay space with a radiator, but you don’t always need to.” he adds.

Alternatively, a brightly coloured radiator beneath the window can provide an exciting contrast and create a bold focal point within the room. Combine it with soft furnishings in complementary shades to let your personality shine through.

“Picking a colour out of your wallpaper and pulling it through into the radiator can bring a whole scheme together.” says Nick.

“We can help you work out what heat output you need for the room and the size of radiator that will work best in your bay. In a 1930s house you may not run a radiator around the entire bay itself, but instead choose a bay radiator to sit in the middle of the space and complement it with radiators on other walls in the room.”

Nick Duggan, Managing Director, The Radiator Centre.

Radiators for boxed bay windows

The great thing about a box-style bay window is that you’re less limited on options when it comes to radiator design. With a straight exterior wall, almost any low-level design can add warmth and style to the space.

The Tuba angled radiator works here too, but the straight wall of a boxed bay means the possibilities for design are wider.

A few options worth considering:

The Horseshoe Cubed radiator introduces horizontal lines that can visually elongate the length of a box bay. It’s available in 188 RAL colours, so whether you’re looking for something subtle or a striking conversation piece, there’s a shade to suit.

If you’re maximising window size to bring extra light into the room and have very little exterior wall space, the Dubal radiator is just 288mm high. While small in stature, it remains highly effective in terms of heating and can still be a stylish addition to your bay.

Tuba Floor standing Bench Radiator in RAL 9010 with natural oak seat

Bay window seating with integrated heating

Another option is seating within the bay window.

“Seating in bay windows is a popular idea. You often see it in hallways or garden rooms. In reality they aren’t always the most practical spaces to sit unless there’s plenty of wall behind you.” says Nick.

Nick adds “It’s possible to add a small radiator underneath, but it’s worth bearing in mind that it can block heat from traveling upwards, so in many cases it’s more about the look than the heating.”

An alternative is the Tuba Bench radiator, which incorporates seating and heating in one design. A perfect fusion of function and style, it comes in a range of sizes, colours and finishes and works particularly well in hallways or boot rooms.

Bay window radiators: measuring your space

Achieving the perfect fit for a curved or angled radiator is naturally a little more challenging than fitting one to a straight wall.

Our team are happy to help ensure you get the right measurements, and we can even provide a template before ordering so you can see exactly how your bay window radiator will fit within the space.

If you’d like more bay window radiator ideas, or advice on choosing the right radiator for your space, our expert design team would be delighted to help. Please contact us or visit one of our showrooms to explore the options in person.

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