Ensure the radiator is turned off before starting the insulation process.

Measure the space behind the device to determine the amount of insulation foil needed.

If the radiator is tall, mark the position of its brackets for better reference.

Cut the foil according to the measurements taken.

When applying the foil, smooth out all air bubbles to ensure firm adherence.

For aluminum foil insulations without adhesive, use wallpaper paste or tape for fixation.

Once the adhesive dries, turn on the heating to enjoy a better-insulated home.

This simple trick can significantly reduce energy costs and eliminate the need for additional heating devices, making it a practical solution for budget-conscious homeowners.