It is a dream of each of us to save on energy bills. You can easily achieve this goal by focusing on the elements that can keep your heat/AC inside your home. It is all about keeping the temperature of your home more consistent and constant.

Energy-efficient doors are made to reduce the energy consumption from your home. However, they do not always make your heating and cooling costs go down. The material that it is made of does impact the efficiency of the door. One should choose a door with low thermal conductivity for maximum efficiency.

In fact, there are so many benefits of having an energy-efficient door in your home. It can help lower heating and cooling bills, soften the cold winter days, save you time when the air-conditioning is on, and much more!

What Makes Doors Energy-Efficient?

While the U-factor measures how well a door insulates against heat loss, the R-value measures how well a door resists air infiltration. U-factor is also known as thermal resistance. These two metrics are used to compare doors based on their efficiency. The higher these figures are, the better they will keep your home cool or warm in extreme weather.

A door with an R-value of 13 is considered energy efficient by most standards, but it also uses more energy than some types of doors with lower R-values. As for U-factor values, these are determined by how well the door seals out air and helps maintain indoor temperature. In general, U-factors for doors should be between 0.2 and 0.4 for the best performance in a house during cold weather and between 0.7 and 1 for maximum performance during hot weather conditions when you need to lose heat from inside the house to outside quickly so that it doesn't build up inside where you might feel uncomfortably hot or humid

When you're shopping for a new door, you should look for one that has an R-value of at least 11. Remember that 'R-value' refers to how well the door will insulate your home from the cold or heat outside. To determine this value, divide the thickness of the material used in inches by its density in pounds per cubic inch (psi). The lower the psi number is, the thinner and more efficient your door will be. For example, if you purchase a 3/8" thick aluminum garage door with a density of 6.0 psi, your door will have an R-value of 11.

Comparing the Energy Efficiency of Different Doors

The thermal efficiency of a door is strongly influenced by the materials used in its construction as well as the level of insulation it contains. Wood, fiberglass, and aluminum are the most common materials used for front doors. With the exception of wood, any of these materials may be used to construct insulated or uninsulated doors, while wood can only be used to manufacture uninsulated doors.


Entry doors made of fiberglass are among the solutions that are most robust. In terms of the amount of energy that they consume, they are also among the most efficient. Due to its low thermal conductivity, fiberglass is already an energy-efficient material when it is not insulated because of this property. Because of this, every outside door that Window World sells is made of fiberglass and has a foam core within.

Steel or Aluminum

External doors are often made of steel or aluminum, both of which are prevalent types of metals utilized. Because both of these things are good thermal insulators, this is an alternative that may be considered for saving energy. Due to the poor heat insulation properties of these materials, touching the door will cause you to be subjected to the warmth that is present outside. They reduce the amount of money spent on electricity but do not last as long as entrances made of fiberglass. The metal may be damaged and scraped with relative ease.


Wooden front doors, despite their beauty and durability, are the least energy-efficient alternative, despite the fact that they have been around for centuries. Wood is not a good insulator since it quickly absorbs heat, hence wood should be avoided wherever possible. In addition to this, it helps with heat transmission since it allows cold or hot air from the outside to enter your home.

Other Elements That Contribute to a Door’s Energy Efficiency

As we discussed, the material is the most important aspect when it comes to choosing energy-efficient doors. However, some other factors that impact the overall energy efficiency of doors include frame, glass, and weatherstripping.


An extra coating of insulation can further increase the energy efficiency of your door. For example, some doors come up with polyurethane foam insulation due to its high thermal resistance and greater R-value. It has become so popular as extra insulation that people frequently use it.


Doors are important because they provide the first line of protection against the weather. A typical door can have windows, a ground or air space, and a frame. They also have several parts that may be found in other types of doors such as sliding doors and hinged doors.

But the the most important component of doors. In order to be effective, all doors must have a frame that helps the users to lean in against the door and push it closed. This helps prevent intruders from entering the structure or harming someone inside.

Thus, it needs no brainer that the frame does play a vital role in enhancing the overall energy efficiency and durability of the doors. That's why people do not like metal door frames because of their poor insulation and susceptibility to termites. Various high-quality and energy-efficient frames are also popular that you can purchase along with the door.

Energy-Efficient Glass

Energy efficiency is crucial for large-glass doors. Installing an insulated fiberglass door without glass inserts decreases energy efficiency. To maintain energy savings, use double or triple-pane with low-E glass.


Weatherstripping seals your door frame on top, bottom, and sides. Home improvement businesses provide weatherstripping to safeguard your door.

Well, we hope that now you have a clear idea of why you need to install energy-efficient doors.