When winter hits Auckland, the dynamic inside a standard office changes immediately. The air conditioning switches to heating mode, and staff begin bringing in personal accessories to stay warm during the workday.
While keeping your team comfortable is important, winter introduces a sharp spike in commercial fire risks. Combining increased electrical demand with common heating mistakes creates a perfect storm for workplace fire hazards. Here are the top seasonal risks to watch out for and how to mitigate them.
1. The Peril of Personal Under-Desk Heaters
The small, portable fan heaters or oil columns that staff bring from home are the single biggest cause of winter office fires.
High Electrical Draw: These units pull a massive amount of power. When plugged into a standard multi-way power board alongside a computer, monitor, and desk lamp, they can easily cause the power strip to overheat internally.
Proximity Hazards: Tucked away under desks, these heaters are frequently placed too close to combustible materials like wastepaper bins, cardboard file boxes, or synthetic curtains, creating an immediate ignition risk.
2. Electric Blankets and Heat Packs
In modern office environments, it is increasingly common to see staff using electric throw blankets or heating wheat bags to stay cozy at their desks.
Electric blankets feature delicate internal heating filaments that can easily fracture if the blanket is folded tightly, stepped on, or pinched by a rolling office chair. Wheat bags present a different danger; if left in the staffroom microwave for too long, the internal grains can char, smolder, and ignite long after they have been pulled out and placed on a desk.
3. Blocked Wall Heaters and Air Vents
Fixed wall heaters and HVAC intake vents often get blocked during the warmer months when office furniture is rearranged.
When the heat is finally switched on in June or July, any filing cabinet, stack of inventory, or storage box pushed against a heating vent will trap extreme thermal energy. Without proper airflow, the temperature rises rapidly, leading to scorched wall panels or a localized fire.
Your Winter Safety Checklist
Protecting your workplace during the colder months relies on a combination of employee awareness and routine equipment testing:
Enforce a Power Board Ban for Heaters: Mandate that any approved portable heater must be plugged directly into a fixed wall socket—never an extension lead or power board.
Implement the 1-Metre Rule: Keep all paper, coats, and clutter at least one metre away from any heating source.
Maintain Clear Fire Paths: Ensure the extra winter coats and umbrellas accumulating in corridors aren’t blocking access to your fire extinguishers, hose reels, or escape routes.