With energy costs climbing and winter settling in, the gap between what you pay to heat your home and how warm it actually feels often comes down to your windows. A heater running against a draughty window is working twice as hard for half the result. Here's how blackout curtains, blinds, shutters, and sheers each perform when it comes to stopping heat loss, and what actually moves the needle on your bill.
How to Keep Your Home Warm This Winter
Key Takeaways
- Blackout curtains cut the most heat loss of any window furnishing, making the biggest dent in a winter heating bill
- Roller blinds sit close to the glass and seal well at the edges, giving solid draught protection for less than full drapery
- Plantation shutters form a rigid barrier that can outperform soft furnishings against larger or older single-glazed windows
- Layering any of these with sheer curtains adds a second sealed air pocket, and that's where the real energy savings show up
How Sway Curtains Help You Stay Warm
A well-fitted window furnishing can make all the difference. Did you know that thermal-lined curtains or blockout blinds can act like a cozy sweater for your windows? They help stop the cold air from sneaking in and keep the heat from escaping. It’s like adding an extra layer of insulation to your home—but one that’s stylish and tailored just for you.
You can even layer sheer curtains with blockout ones for the ultimate combination: soft light during the day and snug, energy-efficient warmth at night.
When it comes to winter warmth, choosing the right window furnishings makes all the difference. Here’s how the Sway Curtain range of products can transform your home:
Blackout Curtains
Blackout curtains are the strongest energy performer of the group. Their thick weave and dedicated lining do more than block light, they trap a layer of still air between the fabric and the glass, which is where most of a room's heat loss happens. Fitted close to the wall and sitting past the windowsill, they cut draughts noticeably compared with a standard curtain.
They also happen to be excellent for privacy and total darkness, which is a bonus rather than the main reason to choose them here. For a room that loses heat fast, blackout is the highest-impact single change you can make.
Roller Blinds
Roller blinds sit flush against the window frame, which matters more for draught control than people expect. A well-fitted blind with sealed edges stops cold air slipping around the sides of the window, something a loosely hung curtain can't always do on its own. Thermal-backed fabrics push their performance further again.
They won't match blackout curtains for total heat retention, but for a smaller budget or a room where full drapery doesn't suit the space, they're a genuine energy upgrade on a bare window.
Plantation Shutters
Shutters work differently to soft furnishings. Because they're a rigid, fixed structure, they form a solid barrier against the glass rather than a fabric one, and that can outperform curtains on larger or older single-glazed windows where draughts are the main problem.
The trade-off is upfront cost. Shutters are a bigger investment than curtains or blinds, but they're also a permanent fixture rather than something you'll replace in a few years.
Sheer Curtains
On their own, sheer curtains are the weakest option here. Their fine, lightweight weave lets light through, and that same quality means they let heat through too, so a sheer alone won't do much for a cold room.
Where sheers earn their place is in combination with something heavier. Paired behind a blackout curtain or blind, they add barely any bulk but contribute to the layered effect below.
Layered Solutions
This is where the real gains show up. Layering a sheer or a blind behind a blackout curtain creates a second sealed air pocket against the glass, and two insulating layers consistently outperform any single product working alone. If your living room or bedroom has a large or old window, this is the option worth prioritising over upgrading just one furnishing.
It's a smaller change than most people expect, adding a blind behind curtains you already own, rather than replacing everything, and it's often the difference between a room that stays cold no matter what and one that finally holds its heat.
Save Energy, Save Money
With energy costs rising, keeping your home warm can feel like a constant balancing act. Upgrading the window furnishings in your coldest rooms gives your heater a break and can meaningfully reduce what you pay to run it over a Sydney winter. It's a straightforward trade: a one-off cost against a bill that keeps recurring every season.
Make Your Space Winter-Ready
Whether you're after full blackout curtains for your coldest room, blinds for a smaller budget, or a layered combination that does both jobs at once, our team can help you find the right fit for your windows. If you're after the styling side, our guide to adding warmth and softness covers fabric and colour choices for a cosier room.
Ready to explore your options? Get in touch today, or learn more about Sway Curtains and how we help Sydney homes stay warm every winter.
Written by Diana Taylor, CEO & Owner of Sway Curtains Sydney
FAQs
Do blackout curtains really cut heating bills?
Yes. Their thick weave and lining trap a layer of still air against the glass, which slows heat loss significantly compared to a standard curtain or bare window.
Are blinds or curtains more energy efficient?
Blackout curtains generally outperform blinds alone for heat retention, but a well-fitted blind with sealed edges still gives a real improvement over no window furnishing at all.
How much heat do single curtains stop compared to layered options?
Layering roughly doubles the effect, since you get two sealed air pockets instead of one. A single curtain helps, but a layered combination is where the biggest bill reduction shows up.
Do plantation shutters help with draughts?
Yes, particularly on larger or older single-glazed windows. Their rigid structure forms a solid barrier against the glass, which can outperform soft furnishings in the right window type.
Are sheer curtains worth it in winter if they don't block much heat?
On their own, not for warmth. Paired behind a blackout curtain or blind though, they add to the layered effect without extra bulk or cost.