In winter, when heating costs rise, many homeowners look for ways to save energy. Windows often come under scrutiny first. But do new windows really help reduce heating bills, or is this just a myth?
🔍 Heat loss – where does the energy go?
Up to 25–30% of a home’s heat can escape through the windows, especially if they’re old or poorly sealed. That makes windows a key factor in insulation.
🪟 Double vs Triple glazing
Triple glazing has better insulation due to a lower U-value. However, installation quality and frame material also play a big role.
💶 How much can you actually save?
New energy-efficient windows can cut heating costs by 10–25%, especially in older homes.
⚠️ When windows alone aren’t enough?
If the house is poorly insulated overall (roof, walls, floor), windows alone won’t create big savings.
✅ Conclusion
Modern, well-installed windows are a real investment in energy efficiency. Still, the best results come from a whole-house approach.