Choosing the right materials when upgrading your house is invaluable but it’s important that you have a good understanding of what you are looking for before you part with your hard earned cash. Knowledge is power and in this case, knowledge can save you power. Your home’s energy efficiency depends on the quality of the materials you use.
You can see the transfer of heat through your front doors by measuring the energy rating levels. The government legislation which was passed in October 2010, stated that all replacement composite doors and windows must have a U-value rating of 1.8Wm2K or less.
Energy Efficiency, Knowledge is Power
Put simply, the better the energy efficiency rating of your door is, the less money you will need to spend on maintaining a comfortable temperature in your home. It sounds simple enough, but how do you find out how energy efficient a door is?
Most composite door manufacturers offer a detailed energy rating report which they send you with your door. This is great but also means that you won’t know exactly how energy efficient your door will be, until you’ve already paid. At Yale door, you can see exactly how efficient your door will be as you choose and customise your door. If you add glass, for example, our door configurator tool will adjust the efficiency indicator accordingly, so you can see exactly how efficient your door will be as you customise it. Knowledge is only helpful if you have it at the right time!
The screenshots below demonstrate how you can view the energy rating as you customise your door. The door without glass has a fantastic “B” grade energy rating. You can also see how adding glass to a door has reduced the energy rating to a “C” grade.


Different materials offer drastically different levels of energy efficiency and when you are looking to replace your doors, it is invaluable that you know the U-value and energy rating before making your purchase. There is no point investing in a new door only to find out when it arrives that it is less energy efficient than the door you already have.
Obviously your decisions won’t be based purely on how energy efficient the door is, as style and design are also important to us all.
Things That Will Affect Your Doors’ Energy Efficiency Rating
Generally speaking, the less glass you have in your door, the more energy efficient it will be. Many door manufacturers allow you to customise your door with different features. However, do they show you how these changes will affect the energy rating of the door? More often than not, the answer is no.
The Yale door configurator tool updates the energy efficiency rating of your door as you pick and choose your preferred styles and features. This means that not only can you see exactly how your door will look, but also exactly how efficient it will be.
Hardwood Door Energy Ratings
According to CENsolutions, a typical 60mm-65mm thick hardwood door has a U-value of around 2.5 to 3.0. Although hardwood doors are aesthetically pleasing, they do not meet U-value legislation and offer poor energy efficiency.
Timber Door Energy Efficiency Ratings
Timber doors are said to be manufactured with the least energy consuming methods. This in itself is good for the environment but does not insure long term energy efficiency. Timber doors offer the poorest energy efficiency levels and it has been said that it would be almost impossible to manufacture a timber door which would comply with a minimum U-value of 1.8W/m2k.
UPVC Door Energy Efficiency Ratings
UPVC was a massive step forward for home energy efficiency and offer fantastically low U-values. Typically you will find most UPVC doors meet the U-value legislation of 1.8W/m2k. It’s worth noting, however, that much like other doors, adding glass to your UPVC door will lead to a higher U-value and poorer energy efficiency. Also, remember that although UPVC doors offer low U-values, the plastic materials they are made with can lead to a cheap looking finish. Practical, but not necessarily stylish.
Composite Door Energy Efficiency Ratings
Composite doors are manufactured with the most modern materials available and offer the lowest U-values and outstanding energy efficiency. Unlike UPVC doors, composite doors are available in many different styles and finishes such as glass panelling and wood grain finishes. Composite doors have become increasingly popular as they combine the style and design benefits of wooden doors and the practicality and efficiency of UPVC doors.