Do Blinds Keep Heat Out?

The morning sun breaking through your window gives you optimism for a brand-new day. Windows are intended to let light and air into a structure, but they can also let heat gain or loss occur. If you’re wondering if blinds can keep the heat out, you’ve come to the right place. We’ve researched this matter and researched the best answer to this question.

Consider hanging blinds, especially to keep the sun’s warmth outside during the summer. Blinds can insulate your home against heat and cold, but you can also use them to save energy. How you install and utilize blinds can also affect how well they block summer heat in your home.

Blinds are ornamental and practical window covers generally used to keep out sunlight and maintain privacy in a home. Continue reading to learn more about blinds, how much heat blinds can keep out, and which blinds block the most heat. 

Simply and modern designed living room interior. - Do Blinds Keep Heat Out?

We may include affiliate links and curated AI content to highlight top design styles.

Blinds: Functional Decor For Your Home Interior

Get our FREE 7 design style cheat sheets
Subscribe for home design tips & inspiration
Get your free gift: Downloadable design style cheat sheets
Thank you for subscribing!
Venetian blind window mask, room interior with ceiling lamp beam, blinds window decoration concept for banner or background.

Window blinds are used in modern homes to cover windows and prevent visitors from seeing inside a room. Installing blinds is advised by designers and builders because they stop hot air from leaving the house on chilly days and entering the house on warm days.

Blinds insulate your home by trapping a layer of air between the fabric and the window when they are measured and installed correctly. Closed blinds refract the sun’s rays before entering the space, maintaining a more relaxed interior. 

Your windows are effectively sealed up, as a result, preventing air leaks. The closer the blind lies to the window, the more effective it will reduce the temperature.

Depending on the kind of blinds, some are far more effective in this regard than others. Faux wood and real wood blinds would block heat more effectively. Blinds made of thick materials will insulate more effectively than ones made of lighter fabrics.

Click here to see these white faux wood blinds on Amazon.

Keep Heat Out Of Your Home

To further minimize the heat that enters the room, consider closing your curtains early in the day. Use blinds to help keep some of the heat inside your home if you live in a cold climate.

Most window treatments meant to keep your home cool are composed of insulated textiles, which also keep your home warmer in the winter.

Energy-efficient window treatments like heat-blocking blinds are a great way to beat the summer heat as they provide insulation. Their distinctive function aids in blocking out both light and heat.

Regardless of the sort of blinds you buy, how you install and utilize them can also affect how well they block summer heat from your home.


Lamp and grass on the window

Blinds allow you to decide whether to leave them open or closed for privacy and to optimize natural light. To maximize sunlight when needed, you might also want to consider rotating the open and closed areas throughout the day.

Control Airflow

The blinds won’t block out air, but they will lessen the hot airflow that is likely to circulate in your space. Additionally, shades ensure that nothing in your home becomes overheated.

Opening the windows behind closed blinds is an excellent approach to promote air circulation and lower indoor temperatures. To a certain extent, you can keep heated air from traveling around your room with the correct kind of window accent.

Save Energy

Blinds insulate your house against heat and cold, but you can also use them to save energy. Closing your blinds will help your windows to operate more cost-effectively and efficiently.

When the sun shines through your windows on summer days, the interior of your home heats up, requiring you to consume more energy and turn up the air conditioning. Utilizing blackout blinds, which primarily block UV light, can help.

Several blinds, including roller, and vertical blinds, can be converted into blackout blinds with a special coating or blackout lining. Some window coverings have automatic features, making it straightforward to operate the coverings in confined spaces.

Click here to see this blackout blind on Amazon.

How Much Do Blinds Help Keep Heat Out?

Wooden shutters blinds with sun rays. Window blinds.

The industry began claiming that window coverings could cut electricity costs by 80%, 50%, or 40%. According to the Department of Energy (DOE), highly reflecting blinds can minimize heat gain by about 45% when entirely closed. 

One example of blinds is thermal blinds. They excel in the summer because they can block up to 75% of the heat when completely closed. They deflect solar heat and maintain a more relaxed environment inside your home. 

Click here to see this thermal insulated blind on Amazon.

Which Blinds Block The Most Heat?

White blinds will reflect sunlight the best. Still, there are various alternative, specially treated blinds designed to absorb as much natural sunlight as possible.

Blackout blinds are robustly constructed, leaving less space for a breeze to pass through. Blackout blinds are a terrific alternative for blocking the heat. Venetian blinds might be the ideal choice if you’re searching for ventilation and heat blocking. Venetian blinds can exclude sunlight when closed yet allowing a breeze to enter the room.

Click here to see this cordless Venetian window blind on Amazon.

Which Way Should Your Blinds Face?

Generally speaking, it doesn’t matter which way the slats or louvers are oriented to achieve fully closed blinds.

If you have roller blinds, they can be either open, closed, or partially closed. However, if you have vertical blinds or blinds made of natural wood, you can spin the slats in whatever direction you like.

Click here to see these roller blinds on Amazon.

If you’re dealing with vertical blackout blinds, you will want to have the blackout side of the blind facing outward towards the sun.

Additionally, regardless of the blind you have, those with a light color that faces the sun will reflect the sun and heat more efficiently than blinds in dark colors.

Do Vertical Blinds Stop The Sun?

window vertical fabric blinds

Vertical window coverings efficiently reduce summer heat gain and glare while allowing plenty of light inside. In addition to effectively blocking heat from entering your home, vertical blinds also provide excellent privacy and light control.

For large windows, cloth or vinyl vertical blinds are the ideal options. It is suggested that you adjust the blind slats upward to lessen heat gain to keep your home cool. They are available in various hues and designs and are an efficient way to lessen the heat and glare that pass through the slats.

Click here to see this vertical blind on Amazon.

Should You Open Blinds In Winter?

Home blinds - cordless cellular honeycomb pleated shade modern shades on apartment windows. Automated curtains blind.

It saves electricity to open your blinds at the appropriate time. Open the window blinds in the morning to let in the warmth and shine some light into your home if it’s winter. Sunlight entering via windows during sunny winter days aids in heating the interior.

You might wish to keep your window coverings drawn throughout the summer to prevent heat gain. Open the window covers that don’t receive direct sunlight to let in some natural light.

Although most people prefer to keep their blinds drawn at night, slightly opening them during hot summer months can let heat escape into the cool night air, lowering cooling expenses.

In Closing

Window blinds are items you can add to your home that can keep heat out. Turning your blinds properly is the simplest approach to improve energy efficiency, reduce electricity costs, and help maintain the correct room temperature. You should pay attention to your windows to save money on household expenses and add an attractive feature.

Before you leave, you may want to read these posts:

How To Install Venetian Blinds [5 Easy Steps]

How To Stop Light From Coming Through Blinds

How To Fit And Install Blinds Like A Pro

Get our FREE 7 design style cheat sheets
Subscribe for home design tips & inspiration
Get your free gift: Downloadable design style cheat sheets
Thank you for subscribing!
Share with a friend -

Leave a Reply

Your email address will not be published. Required fields are marked *