As a severe cold snap grips the nation, fire safety specialists are sounding the alarm over a common household item used for warmth, warning it can become a serious fire hazard if misused.
The Hidden Danger in Your Microwave
Microwaveable heat packs, often filled with materials like wheat, rice, or flax, are a go-to for millions seeking relief from the chill, period pains, or aching muscles. However, their convenience masks a significant risk. Jonny Smith, a fire risk assessment specialist at Crusader Fire, has highlighted the potential for these pouches to ignite if overheated, leading to dangerous "smouldering fires" inside microwaves.
The core of the problem lies in the variability of microwave oven power. A heating time deemed safe in one kitchen can be dangerously excessive in another, potentially causing the bag's contents to overheat and catch fire. "A few seconds too long, or a bag that has dried out, can lead to a smouldering fire inside a microwave," Jonny Smith explained.
Common Misuses That Escalate Risk
The hazards extend beyond the microwave. Experts caution that people often mistakenly assume the bags are safe to leave unattended or place on or near heat sources. A common and dangerous practice is leaving them on radiators or close to curtains.
Perhaps more insidiously, many believe the risk vanishes once they are in bed. "Placing a warm bag on bedding, sofas, or chairs can trap heat against flammable material, increasing the chance of fire," warned Smith. This trapped heat can slowly build, creating a perfect scenario for a fire to start unnoticed.
Essential Safety Checks and Advice
For those who rely on these heat packs, conducting regular safety inspections is non-negotiable. Always follow the manufacturer's instructions to the letter and never leave a heating pack unattended while in use.
Smith advises users to: "Check the seams, lining, and filling for damage. If the bag is split or the filling is exposed, it increases the risk of ignition. Never refreeze or reuse a bag that shows wear."
In summary, while these products offer welcome warmth during the UK's bitter winters, their safe use depends entirely on vigilance. Overheating, placing them on flammable surfaces, or ignoring signs of wear and tear can transform a simple comfort into a serious domestic fire risk.