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Why Install Energy-Efficient Doors?

by KE JIAYI 06 Mar 2023 0 Comments

Installing energy-efficient doors enables you to save money each month on your energy costs. By offering a stronger barrier against the outdoors and keeping your heat or air conditioning inside where it belongs, you’ll see decreased electricity costs as well as more constant and comfortable indoor temperatures all year round. According to experts, you can see savings of between 11 and 24%.

There are several ways to improve your home's energy efficiency, from setting up solar panels to selecting LED light bulbs. With energy-efficient doors, you may improve the curb appeal of your house while also adding comfort and eco-friendliness.

What Contributes to Doors' Energy Efficiency?

Many doors aren’t particularly energy-efficient, and not all doors are made equally. The materials, core, and glass options for the door all affect how energy-efficient it is. Together, these components lessen heat transfer and air leakage through doors. It's important to note that Window World's doors are constructed using these premium components and cutting-edge technologies.

But it's not just an assumption. U-factor and R-value ratings are used to assess the energy efficiency of building materials and finished goods like doors.

The U-factor calculates how quickly heat passes through a door. An object is more energy-efficient the lower the U-factor. The rate at which heat moves through an object is gauged by the U-factor. Your windows will let in less heat if your U-value is lower. Your door should have a U-factor of at least 0.27.

R-value determines how well a product is insulated. The better it is at insulating, the greater the R-value. The allowable R-value range is substantially broader across the nations; it only has to be between 13 and 21.

These factors combine to assess if a product satisfies the requirements for Energy Star Certification, a mark of excellence for energy efficiency.

Evaluating the energy efficiency of various doors

An important factor in a door's energy efficiency is the material it is built of and the insulation it contains. The most typical materials for entry doors are fiberglass, aluminum, and wood. All of these materials, except wood, can have insulated or uninsulated doors.

Let's examine each of these materials' energy efficiency as well as their general durability.


The strongest exterior doors available are made of fiberglass. Additionally, they are among the most energy-efficient. Fiberglass is an energy-efficient material on its own since it conducts heat poorly, but when insulation is added, it becomes even more competitive.

Aluminum or steel

Exterior doors are frequently made of metal, particularly aluminum, and steel. Both materials are effective thermal insulators, making them a choice that uses less energy. Unfortunately, these materials conduct heat, so if you touch the door, you will be able to feel the heat or cold of the outside environment. Although they are energy-efficient, fiberglass doors are more durable. Metal is extremely prone to dents and damage.


Although wood entry doors are elegant and traditional, they are the least energy-efficient option. Compared to other materials, wood is a poor insulator and easily absorbs heat. Additionally, it aids in heat transfer, allowing outside temperatures to enter your house.

Factors that make the doors Energy-Efficient

As we previously stated, the primary material is merely one aspect of a door's energy efficiency. The R-value, U-factor, and overall energy efficiency of the door are all influenced by the insulation, the frame, the glass, and the weatherstripping.

Let's examine the contributions made by each of these materials.


Even if your external doors are made of a material that is already energy-efficient, like fiberglass, they need to have some sort of insulation. Polyurethane foam insulation is something we advise using. It is among the best door insulation available thanks to its great thermal resistance and comparatively high R-value.


Almost as crucial as the door itself is the frame of your door. Some materials are more durable and energy-efficient than others, as you would have predicted. Metal door frames are brittle, easily damaged, and prone to rust. Additionally inadequate at insulating, wooden frames have their own issues with rot, termites, and other bugs.

The Energy-Efficient glass

It's crucial to make sure a door is energy-efficient if it has a lot of glass. Without paying attention to the glass inserts, an insulated fiberglass door installation can significantly diminish energy efficiency. To guarantee that you don't lose any energy savings, look for double or triple-paned glass with low-E coatings.


Your door frame has weatherstripping running along the top, bottom, and sides to make sure it is properly weatherproofed. There are several options available for weatherstripping, and you can even buy strips from home improvement stores to give your door further protection. The effectiveness of these is dependent on the construction, setup, and even the type of flooring that your door opens over.


Energy-efficient doors are essential for removing cold and hot zones from your home because they act as a barrier to keep out the summer heat and the winter chill. You won't need to stay away from those certain areas of your home that feel at least 10 degrees hotter in the summer and 10 degrees cooler in the winter if you have energy-efficient doors and windows.

More environmentally friendly are windows and doors that use less energy. Numerous people are taking action to lower their homes' carbon footprints as awareness of the implications of climate change and global warming grows.

Installing energy-efficient doors is one of the most effective ways to lower your home's carbon impact. Some people are unaware of how much energy is lost through doors and windows in their houses. Due to their high thermal reflection qualities, energy-efficient doors and windows help to control temperatures in your home, requiring less energy from fossil fuels to maintain the ideal temperature.

Additionally, several municipalities and states are providing tax breaks for replacing outdated doors and windows with more energy-efficient ones. The tax credits may total up to $1500 and up to one-third of the cost of the property.

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