What are the common signs of a gas leak?

The common signs of a gas leak include the smell of gas, hissing or whistling sounds near gas appliances, a yellow or orange flame instead of blue, and physical symptoms such as headaches, dizziness, and nausea. If you smell gas coming from your boiler, you should immediately turn off the gas supply and contact a professional for repairs. Do not attempt to fix the issue yourself. Call the Cadent hotline immediately.