What You Can Check for Immediate Danger
While a cold house is never pleasant, a thermostat not calling for heat doesn't usually present an immediate safety risk in the same way a gas leak or carbon monoxide incident would. However, prolonged periods without heat, especially for vulnerable residents, can become a health concern. The primary thing to check is that the boiler itself isn't showing any fault codes or signs of distress (like unusual noises or smells) that would indicate an appliance issue beyond the controls. Look at the boiler display for error messages. If you suspect a gas leak or smell fumes, this is always an immediate emergency, regardless of the heating.
- Check boiler display for fault codes
- Listen for unusual boiler noises
- Smell for gas – if present, evacuate and call National Grid
- Consider vulnerable occupants' well-being
- Verify power to all heating components

