July 10, 2026 — A consumer has reported an incident involving a Dyson Pure Hot+Cool HP04 purifying heater + fan showing significant charring, discoloration, and melting on its white plastic rim, raising serious concerns about fire risk and potential injury. The manufacturer, Dyson, attributes the damage to user error, citing obstruction of the air outlet, a claim the consumer disputes, insisting the device was used in accordance with guidelines.
Product Details
Product: Dyson HP04 (Dyson Pure Hot+Cool HP04 purifying heater + fan)
Incident Overview
On May 28, 2026, a consumer reported an incident involving their Dyson Pure Hot+Cool HP04 heater. The machine, purchased new from Costco in November 2021, exhibited charring, discoloration, and melting on its white plastic rim while operating on standard heat mode set at 70 degrees Fahrenheit. The consumer stated that the device was not placed near a radiator or fireplace, nor was it covered with any foreign object, asserting it was being used in accordance with manufacturer guidelines. Fortunately, the consumer noticed the charring before touching the machine, and no injuries occurred.
The consumer reported that the manufacturer, Dyson, initially dismissed the issue as “not a product fault” and stated there was “no safety risk associated with the issue.” Despite this, on April 11, 2026, the Dyson Escalation Team offered to replace the machine with a refurbished, similar model. The consumer agreed and provided shipping information, but subsequently, Dyson reportedly failed to honor the offer, ignoring multiple follow-up emails. The consumer’s request for a senior manager to contact them and honor the offer also received no response.
Safety Concerns
The reported charring, discoloration, and melting of the Dyson Pure Hot+Cool HP04’s plastic casing indicate that the device experienced high, concentrated heat beyond its design limits at the affected area. This incident raises several critical safety concerns:
- Immediate Dangers: The primary immediate danger is the potential for fire. Had the issue gone unnoticed, the localized overheating could have escalated, potentially igniting nearby combustible materials such as bedding, curtains, or furniture. This could lead to a room fire with devastating consequences. There is also a risk of burns if someone were to inadvertently touch the melted, superheated plastic.
- Long-term Risks: If melting plastic releases fumes, especially if occurring over an extended period (e.g., while a user is sleeping), continuous inhalation of such fumes could pose respiratory health risks or other adverse health effects.
- Who Might Be Affected: Consumers using the Dyson HP04, particularly if operating it in bedrooms or near flammable objects, could be at risk. The elderly, children, or individuals with mobility issues might face increased danger in the event of a rapidly escalating fire.
- Property Damage Potential: A fire originating from an overheated appliance can quickly spread, causing significant damage or complete loss of property, including the device itself, furniture, and the structure of the home.
What Consumers Should Do
If you own a Dyson Pure Hot+Cool HP04 purifying heater + fan, or any similar portable heating appliance, consider taking the following actions:
- Immediate Action: If you notice any charring, melting, discoloration, unusual odors, or sounds coming from your Dyson Pure Hot+Cool HP04 or any other heating device, immediately turn it off and unplug it from the power outlet. Do not touch any discolored or melted areas.
- Check Your Product: Verify if you own a Dyson Pure Hot+Cool HP04 or similar model by checking the product’s label.
- Prevention Measures:
- Always follow the manufacturer’s guidelines for safe operation.
- Ensure there is ample clear space (typically at least three feet) around the heater’s air inlet and outlet, free from any obstructions like furniture, bedding, drapes, or other combustible materials.
- Never cover the heater while it is in operation.
- Do not leave portable heaters running unattended, especially for extended periods or while sleeping.
- Place heaters on a stable, level surface where they cannot be easily knocked over.
- Reporting Procedures: If you experience a similar incident with your Dyson HP04 or any other product, report it immediately to the U.S. Consumer Product Safety Commission (CPSC) at www.cpsc.gov. Also, report the incident directly to the manufacturer. Document all communications, including dates, times, names of representatives, and any offers or resolutions provided.
Manufacturer’s Response
Dyson, Inc. provided a response on June 24, 2026, stating that they take all consumer and product safety concerns extremely seriously and are committed to customer satisfaction.
Following an investigation, Dyson determined that the reported damage was caused by the heater being operated while pressed against, or in close proximity to, an external object (such as furniture or bedding) obstructing the air outlet. According to Dyson, when the air outlet is obstructed, cooler room-temperature air cannot be drawn through the Coanda effect to mix with the heated air. This results in localized heating at the outlet and, in some cases, surface marking from the obstructing material. Dyson asserts that this scenario is consistent with user error and is not indicative of a product defect or safety hazard, concluding there is no associated risk of fire.
Dyson further noted that the Dyson Pure Hot+Cool HP04 user manual expressly instructs that no object should be placed within three feet of the air outlet during operation. They also highlighted that this guidance aligns with the CPSC’s own published safety recommendations, which advise keeping portable heaters at least three feet away from combustible materials such as drapes, furniture, and bedding.
Dyson concluded by appreciating the opportunity to review the matter and reiterating their commitment to supporting customer safety and satisfaction.
Legal Help Available
If you or a loved one has been injured by a defective product or suffered property damage due to a product malfunction, you may be entitled to compensation. The experienced product liability attorneys at Farzan Law understand the complexities of defective product cases and can help you navigate the legal process. Farzan Law is a California based Personal Injury law firm focusing on protecting the rights of those wrongfully injured.
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Contact us today for a free consultation: 424-325-3112
Our legal team has successfully represented clients in product liability cases involving defective appliances, automotive defects, medical devices, and consumer products. We work on a contingency fee basis, which means you don’t pay unless we win your case.
Note: This information is based on incident reports provided by the U.S. Consumer Product Safety Commission. If you find information that is incorrect, please contact us immediately so we can correct the post to reflect accurate information.
Disclaimer: The information provided in this post is not intended to be legal or medical advice. This article is based on publicly available incident reports. The incidents mentioned have not necessarily been independently verified or adjudicated.