Why does your gas hob whistle?

A gas hob may whistle due to a few reasons, primarily related to the flow of gas. If there are blockages in the burner ports or if the burner cap is misaligned, it can disrupt the gas flow and create a whistling sound as the gas escapes. Additionally, if the gas pressure is too high, it can also cause a whistling noise. Regular maintenance and ensuring proper alignment can help prevent this issue.