Hot Water Bottle Safety: What You Need to Know This Winter

As the temperature drops this winter, hot water bottles remain one of the most common ways Australians stay warm and manage pain at home. But behind their simplicity lies a genuine safety risk, one that disproportionately affects older people and those living with diabetes. This guide outlines how to use hot water bottles and heat packs safely, what the law requires, and which alternatives are worth considering.

According to the ACCC and NSW Government, hot water bottle burns are typically gradual and often go unnoticed until they're serious, commonly resulting in third-degree burns that require skin grafts. The injury doesn't always come from a dramatic spill; prolonged, direct contact with the skin is enough on its own.

Winter has plenty of upsides too, including cosy nights in and, for those who enjoy the outdoors, even gardening in the cooler months. But a little extra care goes a long way when it comes to how we keep warm.

Who is most at risk from hot water bottles?

Older people and people living with diabetes are named specifically by the ACCC as higher-risk groups.

Thinner, more delicate skin means burns can happen faster and go unnoticed for longer, and diabetes-related nerve changes can reduce sensation in the hands and feet, exactly where a hot water bottle is often placed. Winter brings other risks for older Australians too, from reduced mobility to a higher chance of unplanned hospital visits.

See our related article on preventing hospitalisation this winter for a broader look at staying safe and well at home.

Simple Tips on how to safely use a hot water bottle this winter

✓ Check it before every use; throw it out if it's cracked, brittle, faded, or leaking.

✓ Never use boiling water. Fill with hot tap water only, over a sink, and don't overfill or fill too quickly.

✓ Make sure the stopper is properly and securely sealed before use.

✓ Always use a cover, or wrap the bottle in a towel; never place it directly against the skin.

✓ Don't lie or rest weight on it, and remove it from the bed before sleep to avoid rolling onto it.

✓ Store it hanging upside down, stopper removed, completely dry, in a cool, dark place.

How can you check the age of a hot water bottle?

Every hot water bottle sold in Australia carries a small "daisy wheel" symbol moulded into the rubber, showing the month and year it was manufactured. Each segment of the wheel represents a month; dots in the final segment, read clockwise, indicate the week.

As a rule of thumb, hot water bottles should be replaced every year, even if they look fine on the outside, since the rubber can degrade internally without any visible sign.

What does the law require for hot water bottles sold in Australia?

Hot water bottles sold in Australia must meet the mandatory standard set out under the Trade Practices (Consumer Product Safety Standard) Hot Water Bottles Regulations.

This covers structural integrity, seam strength, stopper performance and pressure resistance, and requires clear warning labels, including "Do not use boiling water" and a warning about avoiding prolonged direct skin contact. If a bottle doesn't carry these warnings, it shouldn't be used.

A note on wheat bags and heat packs

Wheat-filled heat packs carry their own risks, mainly overheating and fire, particularly if microwaved too long, reheated before cooling, or left in bedding. There's no mandatory Australian standard for these products, but a voluntary standard (AS/NZS 5116:2016) exists.

Always follow the manufacturer's heating instructions exactly, and never leave a heat pack unattended while heating.

Fires pose a real risk, even during winter. Read our article on reducing fire risk at home, fire safety tips for older people and people living with disability, which covers smoke alarms, safe heater use, and simple home escape planning.

What are some safer alternatives to the hot water bottle?

If you'd rather avoid the risks altogether, there are a few other ways to stay warm:

• Electric blankets and heated throws with a current safety certification and an automatic shut-off timer, so they can't overheat while you sleep. As with hot water bottles, replace them every few years and stop using them if the wiring or fabric looks worn.

• Layered clothing and thermal wear, such as merino or thermal base layers, bed socks, and a warm dressing gown, add warmth with no burn or fire risk at all.

• Good quality bedding, such as a wool or heavyweight duvet, flannelette sheets, or a mattress topper, can make a real difference to overnight warmth without any extra device.

• Draught-proofing, using door snakes, curtains, and sealing gaps around windows, keeps a room warmer for longer and reduces how much extra heat you need in the first place.

Staying warm is only part of the picture; keeping active over winter also helps circulation and overall wellbeing. See our article on 6 gentle ways to stay active this winter for some easy, low-impact ideas suited to colder months.

Stay Safe and Warm This Winter With In-Home Support

From safe heating habits to personalised care at home, our local teams work alongside customers and their families to build a care plan of support services for as little or as often as required.

Talk to Your Local Just Better Care Office

Frequently Asked Questions

How often should I replace my hot water bottle?

As a general rule, replace your hot water bottle every year, even if it looks fine on the outside. The rubber can degrade internally without any visible sign, and older bottles are more likely to leak, split, or burst.

What is the daisy wheel symbol on a hot water bottle?

The daisy wheel is a small symbol moulded into the rubber that shows the month and year the bottle was manufactured. Each segment represents a month, and dots in the final segment, read clockwise, indicate the week. Checking this symbol is the easiest way to know if your bottle is due for replacement.

Can I use boiling water in a hot water bottle?

No. Always use hot tap water rather than boiling water. Boiling water increases the risk of the bottle bursting or leaking, which can cause serious burns.

Who is most at risk of burns from a hot water bottle?

Older people and people living with diabetes are at higher risk. Thinner, more delicate skin means burns can happen faster and go unnoticed for longer, and diabetes-related nerve changes can reduce sensation in the hands and feet, exactly where a hot water bottle is often placed.

Are heat packs safer than hot water bottles?

Heat packs carry a different set of risks, mainly overheating and fire, particularly if microwaved for too long, reheated before cooling, or left in bedding. There is no mandatory Australian standard for heat packs, although a voluntary standard (AS/NZS 5116:2016) exists. Always follow the manufacturer's heating instructions exactly.

What are some safer alternatives to hot water bottles and heat packs?

Electric blankets with an automatic shut-off timer, thermal clothing and bedding, and simple draught-proofing around the home can all provide warmth with little to no burn or fire risk.

How can I get in-home support to help manage winter safety?

Just Better Care works with customers and their families to build a personalised care plan, with support services for as little or as often as required. Speak with your local Just Better Care office to discuss what support could look like for you.