Window Film Blog
Photo of a house with energy efficient rating for a blog post on what makes a product energy efficient

What Makes a Product Energy Efficient?

Energy efficient products are items that use less energy to perform the same function as products already on the market. Products are deemed “energy efficient” based on a variety of factors, and here’s how they are typically assessed.

Energy Efficient Product Assessment

Energy Consumption

The first way manufacturers and regulatory agencies determine if products are energy efficient is to measure how much energy they actually use. Products are evaluated and tested for the amount of energy they consume during their operation.

Then this measurement is often compared to standard products that perform the same function to determine if the tested product uses more, less or the same amount of energy.

Result: If the product uses less energy than what is commonly offered in the market with the same results, then that product is considered energy efficient. It is using less energy to perform the same task, thus saving energy.

Standards and Certifications

Regulatory Bodies like government agencies, independent organizations, or industry groups may set energy efficiency standards. The parties involved depend on the industry – for example windows are judges separately from washing machines.

These agencies put products through a certification process. Only products meeting these standards may be certified as energy efficient.

Examples: In the U.S., the ENERGY STAR label is a common marker for energy-efficient appliances. The ENERGY STAR program is run by the U.S. Environmental Protection Agency (EPA) in collaboration with the U.S. Department of Energy (DOE).

Energy Performance Ratings

Often these agencies use rating systems to compare products. New products may be assessed using specific energy performance ratings.

These rating systems are often based on a scale, and products are classified according to their energy consumption relative to a defined standard.

These ratings provide guidance to consumers in choosing more energy-efficient options during the purchasing process. Often appliances or products have their energy performance ratings prominently displayed on their packaging for ease of comparison.

Lifecycle Analysis

Products may also be evaluated for energy efficiency across their entire lifecycle, from production to disposal.

This approach is more comprehensive, considering not only operational energy use but also the energy required to manufacture, transport, and recycle or dispose of the product.

Technological Innovations

Technological innovations play a big role in reducing energy requirements. Products incorporating advanced technologies that enable reduced energy consumption may be deemed energy efficient.

Examples: LED lighting technology, high-efficiency HVAC systems, or smart appliances.

Local Climate and Needs

Energy efficiency might vary by climate or local needs. A heating system’s efficiency might be evaluated differently in a cold climate versus a warm one. So, some customized rating can be done.

Adaptation: Products should be suitable for the specific energy needs of a region to be considered efficient.

Rebates and Incentives

Governments or utilities might offer rebates or incentives to encourage the purchase of energy-efficient products, further promoting their use.

Consumer Education

Providing consumers with clear information about a product’s energy consumption helps them make informed decisions. Things like education initiatives, partnerships with local utilities, and clear labeling based on a universal standard are all ways to make the consumer aware of energy-efficient products.

In conclusion, determining energy efficiency is a multifaceted process involving the assessment of energy consumption, adherence to standards, ratings, lifecycle analysis, technological innovation, and adaptation to local conditions. A combination of these factors helps manufacturers, regulators, and consumers identify and promote energy-efficient products, leading to a more sustainable future. 🌿💡

Energy Efficient Window Film

The ENERGY STAR program currently does not specifically rate or certify window films. The program primarily focuses on rating and labeling products like appliances, electronics, lighting, HVAC systems, and more.

However, window films can still play a significant role in energy efficiency. Many window films are designed to reduce solar heat gain, provide insulation, and cut down on UV radiation, thereby helping to save energy on cooling and heating. They can also protect furnishings from fading due to UV exposure.

Though they may not be part of the ENERGY STAR program, the U.S. Department of Energy (DOE) and other energy organizations recognize window films as energy-saving measures. Some local utilities also offer rebates for home window film installation as part of their energy-saving initiatives, like Orlando Utilities Commission or Garland Power & Light in Texas.

And window films are measured and certified by the National Fenestration Rating Council (NFRC). Make sure the window film you purchase makes all of the NFRC tests and statistics available for you to review. This is the only way you will know the film’s performance!


Buying energy efficient products for our home has become the norm in 2023. Whether you are upgrading to energy star appliances as you replace older models, or are actively looking to make your home more sustainable, there are myriad products available today.

And, if you’re considering window films for energy efficiency, it’s a great choice! It’s wise to consult with manufacturers or retailers who can provide detailed information about the specific energy-saving properties of their products. Also, check with local utility companies for possible incentives and rebates related to window film installation. 🏠🌞

ComforTech™ Ceramic Series from Concord Window Film’s performance specs can be found here:

Shop ComforTech™Ceramic Series now!


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