Portable heaters and generators: keep warm, stay safe!

During colder months and during periods of poor weather, many people turn to portable heaters for extra warmth. When used safely, they can be a great source of comfort, but they can also pose serious risks if not used safely.

Keep Warm, Stay Safe: make sure you use these appliances correctly by following these essential safety tips.

Safe use of electric space heaters

For safe use of an electric space heater, follow these essential guidelines to reduce the risk of fire, burns, or electrical hazards:

Top Safety Guidelines

Plug Directly into a Wall Outlet
- Do not use extension cords or power strips.
- Heaters draw a lot of power and can cause cords to overheat, leading to fires.
- Always check the cord, plug and unit for any damage or frayed wires before use.
- Also, be mindful of trailing cables. You don't want anyone to pull the cable and knock the heater over or even worse, trip and fall onto it.

Keep a 3-Foot Safety Zone

Maintain at least 3 feet (1 metre) of clearance around the heater.
Keep it away from:
- Curtains
- Bedding
- Furniture
- Paper and other flammables

Never Leave It Unattended

Turn it off when you leave the room or go to sleep.
If you need overnight heating, use a heater specifically rated for overnight use with proper safety features.

Use Heaters with Built-in Safety Features

Look for models that include:
- Tip-over shutoff
- Overheat protection
- CE mark

Avoid Use in Wet or Damp Areas

Do not use standard electric heaters in bathrooms or laundry rooms unless they are specifically rated for moist environments (i.e. marked as bathroom-safe).

Place on a Flat, Hard, Non-flammable Surface

Do not place on beds, furniture, carpets, or rugs - check instructions to see where the heater can be used safely.
Never use on an unstable or soft surface where it could tip over or overheat.

Inspect Regularly

Check the cord and plug for wear, fraying, or damage.
Clean dust and lint from vents and grilles regularly to prevent it overheating. Unplug and ensure heater cool before cleaning.

Don't Use as a Dryer

Never place clothes, towels, or other items on or near the heater to dry them.

Use a Timer or Thermostat

This prevents overheating and saves energy.
Many models come with a programmable thermostat or auto shut off.

Use Only in Enclosed, Supervised Spaces

Not for outdoor or unsupervised use (like garages or sheds) unless the heater is rated for that environment.

The fire risk of emollients

Emollients are used to treat various skin conditions and are extremely flammable. Therefore, when they're absorbed into clothing and fabrics, they make the clothing and fabric much more likely to catch fire.
This is another reason why heaters must be placed away from people, fabrics and furniture.

Safe use of gas space heaters

Gas space heaters can be safe and effective if used properly and suitable for indoor use. However, improper use can lead to serious hazards such as carbon monoxide poisoning, fires, or explosions. Here's a practical guide for choosing and using gas space heaters safely:

Check certification

Make sure the heater carries the CE mark before purchasing.

Before you use your heater:

Read the manual

Always follow the manufacturer's instructions for installation, operation, and maintenance.

Inspect the heater

Inspect for any signs of damage.

Ensure Proper Ventilation:

Use vented heaters when possible.
Unvented (vent-free) heaters should only be used in well-ventilated areas.

While Operating the Heater

Keep it stable.
Place the heater on a flat, level surface, away from foot traffic, children and pets.

Maintain Clearance:

Keep at least 3 feet (1 metre) between the heater and anything flammable (furniture, curtains, bedding).

Never Leave It Unattended:

Turn it off when leaving the room.
Turn it off before sleeping.

Use a Carbon Monoxide (CO) Alarm:

Essential if using any gas appliance indoors. Test it monthly.

Ventilation Is Key:

Always keep a window open to allow fresh air in and reduce CO buildup.
Only use in well-ventilated spaces.
Never use outdoor heaters (like propane or kerosene) indoors unless they're specifically approved for indoor use.

Things You Should Never Do

Don't use it in small, enclosed spaces (e.g., bathrooms, small bedrooms) unless the unit is specifically designed for that.
Don't use propane heaters indoors.
Don't block air intake or exhaust.
Don't use it to dry clothes or heat food.
Don't place near water or use in bathrooms or damp areas.
Don't tip or tilt the unit during operation.
Never leave on when leaving the room or sleeping.

Maintenance Tips

Clean regularly to remove dust and debris.
Have the unit serviced annually by a qualified gas safe registered engineer (check www.gassaferegister.co.uk).
Repairs must only be carried out by a gas safe registered engineer.

Safety Features to Look For

Tip-over shutoff
Overheat protection

Fire Safety Tip:

Install smoke alarms and carbon monoxide alarms in every room where a heater is used.

The fire risk of emollients

Emollients are used to treat various skin conditions and are extremely flammable. Therefore, when they're absorbed into clothing and fabrics, they make the clothing and fabric much more likely to catch fire.
This is another reason why heaters must be placed away from people, fabrics and furniture.

Warning Signs of Carbon Monoxide Poisoning

Headache, dizziness, nausea, confusion, fatigue.
If you suspect CO poisoning: Turn off the heater, leave the area immediately, and seek fresh air and medical help.

Safe use of diesel space heaters

During colder months and poor weather space heaters can be a safe and effective way to keep warm if used properly. Here's a practical, guide to the safe use of diesel space heaters:

Use in the Right Environment

Well-ventilated areas only — diesel heaters consume oxygen and produce fumes (especially Carbon Monoxide - CO).
Ideal for outdoor use, garages, barns, warehouses, and construction sites.
Never use in small or enclosed indoor spaces without ventilation.

Follow Manufacturer Instructions

Always read and follow the manufacturer's instructions.
Use correct fuel only.
Never substitute with petrol or other flammable liquids.

Provide Adequate Ventilation

Open doors, windows, or vents to allow fresh air in and exhaust out.
Use a CO alarm in any partially enclosed space.
For indoor applications, use vented diesel heaters only (connected to a chimney or flue).

Safe Placement

Place on a level, stable surface, away from foot traffic.
Maintain at least 3 feet (1 metre) of clearance on all sides.
Keep away from flammable materials (curtains, paper, fuel cans, etc.).

Fuelling Safety

Turn off and cool down the heater before refuelling.
Use a funnel or pump to avoid spills.
Store diesel fuel in approved containers, away from ignition sources.
Never refuel indoors or near open flames.

Check for Safety Features

Look for heaters with:
- Overheat protection
- Tip-over shutoff
- Flame-out sensor

Thermostat controls

Don't leave the heater unattended while running.
Don't use in bedrooms, basements, or other enclosed areas.
Don't run it near children or pets.
Don't ignore fuel odours or visible smoke/fumes — shut down and ventilate immediately.

Emergency Preparedness

Install a carbon monoxide alarm near the heater.
Have a fire extinguisher rated for fuel fires nearby.
Know the signs of CO poisoning: headache, nausea, dizziness, fatigue, confusion. Leave the area at the first sign of any of these symptoms and go to a well ventilated area seeking medical assistance if required.

Safe use of Generators

Generators are a useful back up for providing electricity during power cuts. Failure to use a generator safely can have catastrophic results. Protect yourself and those around you by following these steps:

1. To prevent backfeeding (excess electricity flowing back into the network potentially putting your neighbours and workers at severe risk) never connect directly to your domestic electrical system by plugging it into a wall outlet.

2. Only use a generator with a CE mark or UKCA or UKNI mark - to show it meets all relevant safety requirements.

3. Read and follow the manufacturer's instructions.

4. Only operate generators outdoors at least 6 metres/20 feet away from windows/doors/vents. Partially open spaces, garages and sheds are unsuitable for use of generators. Ensure there is adequate ventilation around the generator and direct exhaust fumes away from occupied areas.

5. Protect the generator from rain and standing water.

6. Only use appropriate heavy-duty, outdoor-rated extension cords designed for generators and check for damage before use. Never overload the generator by connecting too many appliances.

7. Regularly inspect the generator for damage and ensure it is maintained by repairing/replacing damaged parts promptly.

8. Ensure refuelling is only carried out when the generator has cooled down completely. Fuel must be stored safely in properly labelled approved safety containers outside of living spaces away from ignition sources.

9. Use suitably located Carbon Monoxide (CO) alarms inside your home/outbuilding/area being serviced by the generator.

10. Be aware of the symptoms of CO exposure: headaches, nausea, breathlessness, dizziness, collapse and loss of consciousness. At the first sign of any of these, act immediately by moving to a well-ventilated area and seek medical assistance if required.