Indoor temperature doesn’t just impact your comfort—it directly affects your health. Studies have shown that both high and low indoor temperatures are associated with a range of health issues, especially for children, older adults, and people with chronic illnesses. When homes become too hot in summer or too cold in winter, the body has to work harder to maintain its core temperature. Over time, this can increase the risk of heatstroke, cardiovascular strain, poor sleep, and respiratory problems.
So what’s the ideal range? According to the World Health Organization, indoor temperatures should generally stay between 18°C and 24°C (64-75°F) to minimize health risks. But achieving this without constant use of heating or air conditioning can be difficult—especially in homes with large windows or poor insulation.
That’s where well-chosen window coverings come in.
Do Curtains Help With Insulation?
Yes, they do—if you choose the right ones. While sheer curtains might soften light or add privacy, they do little to block heat or retain warmth. Insulated curtains, on the other hand, are specifically designed to minimize temperature transfer. By adding layers of thermal fabric or light-reflective backing, these curtains help trap air and reduce drafts, keeping your home cooler in the summer and warmer in the winter.
For best results, install them so they cover the window fully and hang close to the wall or window frame. Floor-length designs with secure top mounts can reduce heat loss by up to 25% in colder months.
The Power of Insulated Window Shades
If you’re looking for a sleek, modern option, insulated window shades are a practical alternative. Cellular (or honeycomb) shades are especially effective. Their unique design traps air in pockets, providing a layer of insulation without adding bulk. These shades to keep heat out are also ideal for summer months, especially when chosen in lighter colors that reflect sunlight instead of absorbing it.
To make the most of their performance, combine cellular shades with proper window sealing and open or close them strategically throughout the day—close during peak sun hours and open at cooler times to let in fresh air.
More Than Comfort—It’s About Energy Efficiency
Window treatments aren’t just a design element. In homes without air conditioning, they play a vital role in maintaining a stable indoor climate. Even in well-insulated houses, untreated windows can let in a surprising amount of heat. In fact, up to 76% of sunlight that falls on standard double-pane windows turns into heat indoors.
Using shades to keep heat out not only improves comfort but also reduces your reliance on energy-hungry cooling systems. Over time, this translates to real savings on your energy bills and a smaller environmental footprint.
Finding the Right Fit
When selecting window treatments for insulation, pay attention to:
- Fabric: Denser fabrics insulate better.
- Color: Light colors reflect heat; dark colors absorb it.
- Fit: Custom-sized curtains and shades that fully cover the window area work more efficiently.
- Layering: Pairing curtains with shades enhances performance and allows more flexibility in light control.