Mainstays humidifiers
2 reports to CPSC, the latest made Jan 18, 2026. A report isn’t a recall.
Watch and the shortlist are kept with a free account, on every device. Your watch list. CPSC’s own search is on saferproducts.gov.
At a glance
From SaferProducts.gov, released Oct 25, 2026.
- 2reports to CPSC
- Jan 18, 2026the latest report was made
- Nov 14, 2025the earliest
- 0with the company’s comments
- Brand
- Mainstays
- Maker
- Walmart Stores Inc.Makers, importers or sellers, as the reports name them
- Product
- HumidifiersCPSC’s product type: Humidifiers (code 304), in Home Maintenance and Structures: Heating, Ventilation & Air Conditioning
By month
The numbers, as a table
| Month | Reports |
|---|---|
| January 2026 | 1 |
| November 2025 | 1 |
How badly anyone was hurt
- Hurt, no treatment 1 CPSC: Injury, No First Aid or Medical Attention Received
- No one hurt 1 CPSC: Incident, No Injury
As each report says it, in short words; CPSC’s own words are under each.
The reports, as CPSC published them
Reports people made to the U.S. Consumer Product Safety Commission. CPSC publishes each one after sending it to the company named, and doesn’t guarantee they’re accurate. A report isn’t a recall.
Each report is the words of the person who made it, as CPSC published them. The company’s comments, where CPSC published any, are set apart as the company’s own.
CPSC, SaferProducts.gov public database export. Released Oct 25, 2026. Updated daily.
-
Hurt, no treatment Made Jan 18, 2026, sent to the company Jan 22, 2026, published by CPSC Feb 11, 2026
The product, in the report: Mainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma, Black. This is a Walmart house brand.
Likely electrocution/fire/burn hazard. This is in reference to the item Mainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma, Black purchased from Walmart. Mainstays is their house brand. The humidifier has too weak of a spring on the check valve that allows the tank to refill the humidifier base. This results in the silicone valve seal not fully seating against the sealing surface. About 3-4 drops per second make it past the seal. Over the course of about 2 hours, this allows for the humidifier base to overfill and leak into the internal electronics portion of the base. Water shorted the internal nightlight and was running out of the base and down the power cord. Further, water was found inside the lower housing, a region that should not be exposed to water. Additionally the overfilled humidifier base heated the water to the point of burning ones hands when trying to pour out the water. This event occurred on the first use. This was not a one-off manufacturing defect. This seems systemic. Multiple units from this store exhibited the same leak due to the weak spring. Likely, an entire batch of these contain the inadequate spring. This will lead to burns, electrical hazards, and/or fires.
- Model
- HU00-19054NB
- UPC
- 6950854307106
- Bought from
- Walmart.com
- Bought
- Jan 18, 2026
- Where
- Bluff City, Tennessee: Home/
Apartment/ Condominium - Who was involved
- Age 33, Male
- The reporter’s relation to them
- Self
- As this report names them
- Brand Mainstays, made or sold by Walmart Stores Inc.
- How badly, in CPSC’s words
- Injury, No First Aid or Medical Attention Received
-
No one hurt Made Nov 14, 2025, sent to the company Nov 20, 2025, published by CPSC Dec 5, 2025
The product, in the report: Mainstays humidifier (Model HF3190W-UL) White
On Friday, November 14th 2025, a White Mainstays humidifier (Model HF3190W-UL) caught fire in our home. At approximately 2:05 PM, my husband returned home and immediately smelled smoke in the house. Seconds later, the upstairs fire alarms activated. The smoke was coming from the humidifier located in our upstairs bedroom.
The device was actively burning from inside the unit. The plastic housing had melted open and flames were visible. My husband attempted to extinguish the fire using a fire extinguisher, which helped some but the flames continued. He then carried the burning humidifier with his bare hands into our hallway bathroom and placed it in the bathtub, where he doused it with water until the fire was fully out.
While he was working on the fire, I called 911 at 2:07 PM, and the fire department arrived within minutes to clear the home and ensure the fire was completely out.
The fire caused damage to the carpet, subfloor, hallway flooring, and a wooden bench. There is smoke odor throughout the second floor and faintly through the rest of the home. My husband inhaled smoke while suppressing the fire.
The humidifier bears an ETL certification mark, and it appears that the ignition originated internally. The top is completely melted, internal components are charred, and the wiring is visibly burned.
The unit was purchased approximately two to three years ago. We still have the burned device and can provide photos or the physical unit if needed.
This incident created a significant fire hazard, physical risk, and property damage.
- Model
- HF3190W-UL
- Bought from
- Walmart
- Bought
- Oct 20, 2023
- Where
- Reisterstown, Maryland: Home/
Apartment/ Condominium - Who was involved
- Age 32, Female
- The reporter’s relation to them
- Self
- As this report names them
- Brand Mainstays, made or sold by Walmart Stores Inc.
- How badly, in CPSC’s words
- Incident, No Injury
CPSC’s disclaimer
Disclaimer: CPSC does not guarantee the accuracy, completeness, or adequacy of the contents of the Publicly Available Consumer Product Safety Information Database on SaferProducts.gov, particularly with respect to information submitted by people outside of CPSC.
Word for word, from the disclaimer in CPSC’s export.
Sources
Sources
-
U.S. Consumer Product Safety Commission, SaferProducts.gov public database export.
Released Oct 25, 2026 and checked Oct 25, 2026. Updated daily. Public domain (U.S. Government work). CPSC asks to be credited, and that no endorsement be implied.
Reports of harm are from the U.S. Consumer Product Safety Commission (CPSC), on SaferProducts.gov. CPSC does not endorse Hearth Record.