Can a steel frame house still be energy efficient?

Steel framing must meet NZBC energy standards (and can easily meet higher standards too). Also, because it is straight and true, the framing helps prevents cracks due to shrinking or warping, thus preventing air leaks that result in loss of energy. A key component in this is the thermal break which has other significant advantages as mentioned earlier. This thermal break interrupts the thermal bridge between the metal and other materials.