The real cost of heating bills - and how your windows can help
With energy prices still a concern for families, we've been having more conversations about how window treatments can actually help reduce heating costs. Here's what we've learned from both the science and our customers' experiences.
We've heard from customers who've noticed reductions in their heating bills after installing energy-efficient window treatments, though the amount varies considerably depending on the property and existing insulation.
Now, we're not energy assessors, and every home is different, but we've heard similar stories enough times to know there's something real happening here.
Where the heat actually goes
Most people think about insulation in terms of loft space and wall cavities, but windows are responsible for a significant amount of heat loss in British homes. The thing is, it's not just about the glass itself—it's about the air movement around windows.
"Think about it: even double glazing creates cold spots near windows. That cold air drops down, warm air gets pulled toward the window to replace it, and you've got a constant circulation pattern that makes your heating work harder."
What actually makes a difference
From our experience, the window treatments that genuinely help with energy efficiency share a few characteristics:
Cellular (Honeycomb) Blinds
These are the real stars when it comes to insulation. The honeycomb structure traps air in little pockets, creating a barrier between the window and the room. We've installed these in period properties where customers couldn't change the original single-glazed windows, and the difference in comfort is noticeable immediately.
Victorian properties with large windows often see dramatic comfort improvements with cellular blinds, particularly in rooms that were previously too cold to use comfortably during winter months.
Quality shutters
Proper internal shutters create an additional layer of insulation, especially when they're well-fitted. The timber itself has insulating properties, and when closed, shutters create an air gap between the window and the room.
Quality shutters can reduce condensation issues by minimising cold spots near windows—a clear indicator that they're helping with the insulation properties of the room.
Thermal blackout blinds
These aren't just about blocking light. The backing material on thermal blackout blinds is specifically designed to provide an insulating layer. We often recommend them for north-facing rooms that struggle to stay warm.
The "fit" factor
Here's something that's often overlooked: how well the window treatment fits makes a huge difference to its insulating properties. Gaps around the edges let air circulate freely, which defeats the purpose.
"This is why made-to-measure really matters for energy efficiency. We take precise measurements and ensure there are minimal gaps. It's one of those details that isn't immediately obvious but makes a real difference to performance."
What our customers actually save
We obviously can't guarantee specific savings—every home, heating system, and family's usage is different. But based on customer feedback, we typically hear about:
The comfort factor
Beyond just the potential bill savings, there's the comfort aspect. A room that feels warm at 19°C means you don't need to crank the heating up to 22°C to feel comfortable.
Conservatories often see the most dramatic transformation with energy-efficient window treatments, going from spaces that are too hot in summer and too cold in winter to comfortable year-round rooms.
The honest reality check
Let's be realistic: window treatments alone aren't going to transform astronomical energy bills into pocket change. If you've got major insulation issues or an ancient boiler, those are probably bigger priorities.
But if you're looking at window treatments anyway—for privacy, light control, or style—choosing options that also help with energy efficiency just makes sense. The extra cost for thermal properties is usually quite modest, especially when you consider the potential long-term benefits.
Summer benefits too
While we've been talking about winter heating, the same principles work in reverse during hot weather. Good window treatments can help keep rooms cooler, potentially reducing air conditioning costs or the need for fans.
Solar reflective blinds are particularly good for this—they bounce heat back out through the window rather than letting it build up in the room.
Curious about energy-efficient options?
If you're interested in how window treatments might help with your energy bills, we're happy to discuss the options during a survey. We can explain what might work best for your specific windows and rooms.
Bulldog Blinds
Our family business has been helping homeowners in the area create beautiful, functional window treatments and outdoor spaces since we started. We love sharing what we've learned along the way.