Find your Local Installer

  • Home
  • Blogs
  • Double Glazing Energy Saving Calculator

Double Glazing Energy Saving Calculator

Feb 21 2024

A Double-Glazing Energy Saving Calculator serves as a valuable tool in this endeavour, offering insights into the potential benefits and cost-effectiveness of upgrading your windows.

This stepwise process will guide you through utilizing the calculator effectively, ensuring that you make informed decisions tailored to your home’s specific needs and your desire for energy efficiency.


Energy Saving Calculator
Source: Chameleon Windows Restoration

How to Use a Double-Glazing Energy Saving Calculator

Step 1: Gather Information

Before using the calculator, gather essential information about your existing windows and your home. This includes:

  • The number of windows you have.
  • The dimensions of each window.
  • The material of the current windows (e.g., wood, uPVC, aluminium).
  • The type of glazing in your windows (single, double, or triple glazing).

Step 2: Find a Reliable Calculator

Search for a reputable double-glazing energy saving calculator online. Look for calculators provided by energy agencies, government websites, or trusted energy efficiency organizations. Ensure that the calculator is up-to-date and considers various factors in its calculations.

Step 3: Input Window Details

Enter the gathered information into the calculator. Provide the number of windows, their dimensions, the material of the frames, and the current type of glazing. Some calculators may also ask for additional details, such as the orientation of your home, the average energy cost in your area, and the insulation level of your walls.

Step 4: Specify Heating System

Indicate the type of heating system used in your home. This information helps the calculator estimate the potential energy savings based on the improved insulation provided by double glazing.

Step 5: Enter Energy Costs

Provide the current cost of energy in your area. This is crucial for the calculator to estimate the potential savings in energy bills after double-glazing installation.

Step 6: Receive Results

Once you’ve input all the necessary details, the calculator will generate results. These results typically include:

  • Estimated energy savings after installing double glazing.
  • Reduction in carbon emissions.
  • Potential cost savings on energy bills.

Step 7: Explore Recommendations

Some calculators may offer recommendations for the type of double glazing that would be most beneficial for your home. This could include suggestions for glass type, frame material, or additional features like low-emissivity coatings.

Step 8: Consider Payback Period

Review the payback period provided by the calculator. This indicates the time it would take for the energy savings to cover the cost of installing double glazing. A shorter payback period is generally considered more favorable.

Step 9: Compare Scenarios

If the calculator allows, consider comparing different scenarios. For example, you might want to compare the energy savings and payback periods for double glazing with different glass types or frame materials.

Step 10: Consult with Professionals

While calculators provide useful estimates, it’s advisable to consult with professionals in the double glazing industry. They can provide personalised advice, detailed quotes, and ensure that your specific needs and circumstances are taken into account.


In the pursuit of a more energy-efficient and cost-effective home, the Double-Glazing Energy Saving Calculator emerges as a key ally. By following the stepwise process outlined above, you can harness the power of this tool to estimate energy savings, gauge potential reductions in carbon emissions, and assess the financial viability of double glazing.

Featured in