Thermostats (for Heating Or Cooling Systems)
Twenty years of CPSC NEISS emergency-room records for this consumer product category, combined with demographic breakdowns, multi-year injury trends, and matching recall notices.
Kitchen Small Appliances & Housewares · CPSC Code 340
Up 95% over 5 years
The verdict
Thermostats (for Heating Or Cooling Systems) carry a danger score of 47/100 (moderate risk), driven by roughly 452 ER-treated injuries a year that are rising by about 95% over the last five years.
- 47/100
- danger score (moderate risk)
- 452
- ER visits per year (avg)
- 22.6%
- end in hospital admission
- 75+
- most-injured age group
Every figure is rendered from the CPSC NEISS record for product code 340 - last data year 2024.
PlainSafety danger score
How this 47/100 score is built
The score is computed from four CPSC-derived factors for thermostats (for heating or cooling systems) - no opinion, no editorializing:
- Injury volume452 ER visits/yr
- Severity (hospitalization rate)22.6%
- Fatality rate0.00%
- 5-year trend+95%
See the full methodology for the exact weighting of each factor.
What the CPSC Data Shows
Thermostats (for Heating Or Cooling Systems) (CPSC product code 340, in the Kitchen Small Appliances & Housewares category) generate an estimated 452 emergency-room visits every year in the United States, adding up to roughly 9,033 ER-treated injuries across the 20-year span from 2005 to 2024. PlainSafety derives a danger score of 47/100 for this category (moderate risk), combining raw injury volume, demographic reach, severity of outcome, and multi-year trend. The five-year trajectory shows that injury counts are rising by about 95% over the last five years, with the busiest year on record being 2020 (898 estimated ER visits) and the quietest 2008 (186 estimated visits).
The single most common ER diagnosis for thermostats (for heating or cooling systems) is laceration to the head, accounting for approximately 1,186 visits across the 20-year NEISS window, followed by internal injury to the head (1,136 cases). The 75+ age group absorbs the largest share of injuries, about 4,178 cases over the NEISS window, and females appear slightly more often than the opposite sex in that cohort. Severity outcomes from the NEISS disposition field show that 22.6% of ER visits involving this product end in hospital admission or transfer.
Beyond the hospital-sampled NEISS projections, this page also aggregates 72 consumer incident reports filed directly on SaferProducts.gov, plus 20 anonymized ER narratives - together forming a layered picture of how thermostats (for heating or cooling systems) fail in real households. Every figure on this page comes from CPSC-published data: NEISS projects national estimates from a probability sample of about 100 U.S. hospital emergency departments, while SaferProducts.gov collects voluntary reports from consumers, manufacturers, and clinicians. The danger score, trend indicators, and demographic breakdowns update automatically when CPSC releases a new yearly NEISS file, which is why this page is dated 2024-12-31. For regulatory context, consult CPSC recall notices and the SaferProducts.gov public database linked below.
Annual Injury Estimates (2005–2024)
Source: CPSC NEISS national estimates CPSC NEISS national estimates Injuries represent ER-treated cases only
Who Gets Injured?
| Age Group | Male | Female | Total |
|---|---|---|---|
| 0-4 | 384 | 185 | |
| 5-14 | 508 | 420 | |
| 15-24 | 507 | 266 | |
| 25-34 | 71 | 459 | |
| 35-44 | 77 | 180 | |
| 45-54 | 286 | 272 | |
| 55-64 | 351 | 86 | |
| 65-74 | 134 | 619 | |
| 75+ | 1,136 | 3,042 |
Most Common Injuries
| Body Part | Diagnosis | Est. Injuries |
|---|---|---|
| Head | Laceration | |
| Head | Internal Injury | |
| Lower Trunk | Fracture | |
| Finger | Laceration | |
| Upper Arm | Fracture | |
| Face | Laceration | |
| Not Stated/unk | Other | |
| All Parts Body | Anoxia | |
| Face | Contusions, Abr. | |
| Lower Trunk | Contusions, Abr. | |
| Shoulder | Other | |
| All Parts Body | Other | |
| Lower Leg | Laceration | |
| Hand | Contusions, Abr. | |
| Lower Arm | Laceration |
Severity Breakdown
ER Visit Narratives
Real anonymized emergency room reports from the CPSC NEISS database.
87YOF PRESENT STO ED W/ RT SHOUDLER AND HIP PAIN AFER MECHANICAL FALL FROM STANDING TODAY. PT WAS REACHING UP TO THERMOSTAT TO ADJUST THE TEMPERATURE IN HER HOUSE WHEN SHE LEANED OVER TO TURN ON LIGHT AND LOST HER BALANCE. FALLING FORM STANDING ONTO RT SIDE ON HARDWOOD FLOOR. DX: CLOSED FX OF NECK OF RT FEMUR W/ ROUTINE HEALING
32YOF PRESENTS FROM THE PAIN CLINIC FOLLOWING A NEUROLOGIC SPELL. WALKED TO THE THERMOSTAT TO ADJUST IT AND FELL DOWN. MOTHER WAS ABLE TO CATCH PATIENT. NO TRAUMA WITH TODAY'S FALL. DX: SPELLS UNDIFFERENTIATED, SPELLS NEUROLOGIC
75YOF WAS ATTEMPTING TO ADJUST THE THERMOSTAT WHEN SHE TURNED AND HAD A SYNCOPAL FALL STRIKING HER HEAD PATIENT IS ANTICOAGULATED ON *** DX: CLOSED HEAD INJURY; COMPRESSION FRACTURE OF THORACIC VERTEBRA; SYNCOPE AND COLLAPSE
20 YO *** F C/O MIGRAINE S/P PT STATES *** HIT *** FOREHEAD ON A PROTRUDING THERMOSTAT LAST NIGHT. DX: MIGRAINE
37YOM, STOOD UP QUICKLY FROM SEATED POSITION FELT LIGHTHEADED AND FELL STRIKING FACE AGAINST THE THERMOSTAT, DX: SYNCOPE UNSPECIFIED; FACIAL LACERATION
63YOF WAS WALKING TO CHANGE THE TEMPERATURE ON HER THERMOSTAT WHEN SHE TURNED AROUND AND HAD A FALL BACKWARDS HITTING HER HEAD ON WOODEN FLOOR. DX: TRAUMATIC INJURY OF HEAD, CONCUSSION
83YOF GOT UP FROM WHEELCHAIR TO TURN OFF THERMOSTAT AND FELL DX: KNEE AND ARM PAIN
7YOM FELL AND HIT HEAD ON THERMOSTAT DX: CHI, LACERATION SCALP
16YOM FELL AND HIT HEAD ON A THERMOSTAT COVER AT SCHOOL DX: FACE LACERATION
7YOM PRESENTS WITH A SMALL LACERATION TO THE TOP OF HIS HEAD AFTER HE WAS IN THE GYM AND HIT HIS HEAD ON THE THERMOSTAT. DX: LACERATION OF SCALP; MINOR HEAD INJURY.
17YOM BANGED HEAD ON A THERMOSTAT. DX: CONCUSSION, SCALP LACERATION
51YOM LAC TO THUMB WHEN GRABBING A THERMOSTAT ON WALL IN GROUP HOME
Consumer Incident Reports
Reports filed by consumers on SaferProducts.gov.
Hunter Fan Company thermostat model 4420. This thermostat caught fire Saturday afternoon and damaged the thermostat and wall surroundings. This problem could have burned the house down if I had not been right there at the time of ignition.
On the morning of 9/19/15 I turned on Cadet model C2002 thermostat to 64 degrees. 5 minutes later the smoke detector alarm went off, and we found the heater up in flames and starting to bubble the wall paint. Doused with water and fire extinguisher. Removed charred thermostat and removed another same model thermostat to find that it had what looked like the beginning of smoke marks (black soot) on top of the thermostat. Removed it and had all 11 of the Cadet thermostats replaced irregardless of model the next day. Cost $400.00
I sent the following to Honeywell regarding an incident with an electric baseboard thermostat. The email was sent to the attention of [REDACTED] at ecc@honeywell.com **************************** After reading that some of your line level thermostats were being recalled, I contacted the recall hotline regarding a CT62B1015 that overheated on me. The recall hotline told me that this model was not on the recall list, and they referred me to customer service, who acknowledged that there were reported problems with this thermostat and referred me to you. One of the inside contacts (red wire,lower contact) is badly charred, the gray housing is also melted and charred and the wire insulation is melted. Fortunately, we smelled the overheated plastic and turned off the power immediately. I believe the problem is in the design or the manufacturing. The thermostat was installed by a licensed electrician. I have replaced the unit with another type of line level thermostat a Cadet TH110-DP-P, which I believe is also made by Honeywell. My reason for contacting you is to record the problem with my original thermostat. This model may need to be added to the recall list. Please let me know if there is any more information I can provide and if this model will be added to the recall list. Sincerely, [REDACTED]
Alkaline batteries in the blue back-lit touch panel thermostat leaked, causing the thermostat to fail, brief electrical burning smell, AC switched to heat mode- despite outside temperature being in the 80's. Had to shut off power to entire HVAC system to stop, now don't have AC.
In 2007 I bought two Honeywell RLV430 Thermostats which were installed by a licensed electrician. In the past weeks I noticed a grey discoloration on my paint on the wall - like smoke from a candle flame. This happened with two thermostats of this kind - one in my living room and one in my bedroom. I called another licensed electrician to look at it as I was concerned about it. The electrician stated that the two thermostats were installed correctly and that nothing was wrong with my electrical lines. They were also in line with what was required for my heaters. He advised to remove them as the "signs of smoke: were not only on my walls, but also inside the thermostats. I had him remove both and will have them replaced. I am worried that there might be something wrong with these thermostats and will email the company as well. OI have photos of my walls and will put one thermostat at the disposal of Honeywell should they wish to evaluate the unit. I am writing as I am not sure if others have reported the same issues.
We purchased a Honeywell RLV3120 Non-Programmable Thermostat and had it installed by an electrician in September of 2014. While it was in use for residential heating during cold weather I noticed that the top of the thermostat would produce a lot of heat. We had 2 new electricians check to make sure that it was installed properly and they found no problems. During the heating season of 2017 we were away on vacation and received a text message with a photo of the thermostat from a friend who was monitoring our home. The photo showed a large black burn mark on the sheetrock above the thermostat, exactly where I had always felt the worrisome hot spot. The thermostat was immediately disconnected and replaced.
I noticed that there were scorch marks above 3 of my 6 Honeywell RLV430 thermostats. I had a licensed electrician come look at the the wiring, thinking that it was the wiring in the wall that was causing the scorch marks. He said there was nothing wrong with the wiring, it was the thermostat unit, possibly a battery within the unit going bad. I now have the breakers to all the units shut off.
Its a fire hazards from the power supply its over heated and burnt the cord extension
Showing 8 of 72 reports.
Product Recalls
Search for active and past recalls related to thermostats (for heating or cooling systems) on the CPSC website.
Frequently Asked Questions
How dangerous are thermostats (for heating or cooling systems)?
Based on 20 years of CPSC data, thermostats (for heating or cooling systems) have a danger score of 47/100 (moderate risk). An estimated 452 ER-treated injuries occur annually in the U.S. related to this product category.
What are the most common injuries from thermostats (for heating or cooling systems)?
The most common injury is laceration to the head, accounting for approximately 1,186 injuries over 20 years.
Are injuries from thermostats (for heating or cooling systems) increasing or decreasing?
Up 95% over 5 years.
Who is most at risk for thermostats (for heating or cooling systems) injuries?
The 75+ age group accounts for the most injuries, with approximately 4,178 cases recorded over 20 years. Females are more frequently injured in this age group.
What happens when someone is injured by thermostats (for heating or cooling systems)?
Of all ER visits involving thermostats (for heating or cooling systems), approximately 22.6% result in hospital admission. The majority of patients (77.4%) are treated and released from the emergency department.
How can I report a safety problem with thermostats (for heating or cooling systems)?
You can file a consumer incident report at SaferProducts.gov, the official CPSC reporting portal. Reports help the CPSC identify emerging hazards and trigger investigations or recalls. You can also call the CPSC hotline at 1-800-638-2772.
Related Products in Kitchen Small Appliances & Housewares
Safety Guides
What this means for you
Treat the 47/100 score as relative risk between products, not your personal odds of injury.
- See where this category ranks against every other tracked product. Full rankings
- Injuries cluster in the 75+ age group, take extra care if that describes your household.
- Check for active recalls on this product before you assume it is safe. CPSC recalls
NEISS estimates ER-treated injuries from a national probability sample of hospitals; they do not capture injuries treated elsewhere or not treated at all.
Data: CPSC National Electronic Injury Surveillance System (NEISS) 2005–2024 and SaferProducts.gov consumer incident reports. Injury estimates are based on a nationally representative probability sample of U.S. hospital emergency departments. This page is for informational purposes only and is not affiliated with the CPSC.
Read our methodology - how this data is sourced, scored, and verified.