Kidde carbon monoxide alarms

15 reports to CPSC, the latest made Jun 12, 2024. A report isn’t a recall.

Watch it to hear when CPSC publishes new reports about it. CPSC’s own search

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.

15reports to CPSC
Jun 12, 2024the latest report was made
Dec 14, 2011the earliest
12with the company’s comments

Brand: Kidde
Maker: UTC Fire & SecurityMakers, importers or sellers, as the reports name them
Product: Carbon monoxide alarmsCPSC’s product type: Carbon Monoxide Detectors (code 712), in Home Maintenance and Structures: Home Security

Other ways the reports write the brand (1)

“Kiddie”

By month

1 report from July 2023 to June 2024; the most in June 2024, 1. 14 earlier reports, since December 2011, are in the table.

The numbers, as a table

Reports to CPSC by the month each was made, newest first
Month	Reports
June 2024	1
November 2021	1
May 2020	1
March 2019	1
October 2018	1
July 2016	2
April 2015	1
June 2014	1
March 2014	1
September 2013	1
November 2012	1
January 2012	2
December 2011	1

How badly anyone was hurt

Emergency room 1 CPSC: Injury, Emergency Department Treatment Received
No one hurt 14 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.

No one hurt
Made Jun 12, 2024, sent to the company Jun 17, 2024, published by CPSC Jul 2, 2024

The product, in the report: CO alarm made by Kidde

Kidde P4010ACS frequently has false alarms even after resetting and cleaning the sensor

Model
P4010ACS
Where
Owings, Maryland: Home/Apartment/Condominium
Who was involved
Unknown
The reporter’s relation to them
Unspecified
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(6/26/2024) UTC Fire & Security : At Kidde we take residential fire safety very seriously, which is why all of our products comply with the rigorous standards set by Underwriters Laboratories for performance and reliability.
Nuisance alarms are a rare but possible occurrence, and have numerous potential causes. We note that alarms must be cleaned on a regular basis to keep them free of dust and debris, in accordance with the instructions in the user manual. Improper maintenance or placement are often the cause of such false alarms. We kindly ask that the consumer contact our customer service department if they have not done so already so that we may work with them to ensure that they are satisfied with our products, including replacing any alarms that are not meeting expectations free of charge, perhaps with a different model that may be a better fit for the customer’s use. 1 (800) 880-6788 or https:///https://www.kidde.com/home-safety/en/us/support/

CPSC report 20240612-FFAF1-2147338652. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Nov 8, 2021, sent to the company Nov 12, 2021, published by CPSC Nov 29, 2021

The product, in the report: Gas and Propane Detector, 110 volt with 9 volt battery back up. Plugs in directly to an outlet.

I purchased a home recently and when the gas company (propane) came out for a safety inspection we discovered a rotten egg smell in the basement, no leaks found. By the first week, the gas company had been called out four times and a furnace repairman twice. I installed two brand new Kidde KN-COENG-3 units, one in the boiler room of the basement at 18 inchs off the floor and another at the top of the basement stairs to the family room. It was discovered that we indeed had a Propane leak at the Gas Control valve all along. Neither unit never alarmed, Could have killed us!

Model
Model KN-COEG-3 part 900-0113-05
Bought from
Home Depot
Bought
Oct 18, 2021
Where
Stafford, Virginia: Home/Apartment/Condominium
Who was involved
Unknown
The reporter’s relation to them
My Spouse
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

CPSC report 20211108-361B8-2147358886. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made May 21, 2020, sent to the company Jun 26, 2020, published by CPSC Jul 13, 2020

The product, in the report: Combination CO Smoke Alarms

The consumer indicates that none of her six alarms went off even though there was a carbon monoxide leak in her home due to her vehicle running in the garage for two and a half hours. The consumer contacted her Fire Department and they aired her home. Before they arrived, the consumer had opened doors and windows for fifteen minutes so their forty-six ppm CO reading was lower than it is believed to have been at its highest that day.
The consumer contacted the Manufacturer and explained the situation; the representative she spoke to indicated that they would send her replacement alarms if she shops them the ones in her home.
The consumer plans on keeping her alarms for the next thirty days in case an investigation ensues.
NOTE: The consumer has limited information on her alarms because it was already installed when she purchased her home in May 2018.

Model
KNCOSM-BA
Where
Jupiter, Florida: Home/Apartment/Condominium
Who was involved
Female
The reporter’s relation to them
Self
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(10/22/2020) UTC Fire & Security : It is Kidde’s mission to protect people and property from fire and its related hazards. That is why Kidde’s products meet or exceed the voluntary safety standards set by UL, an indepdendent test lab.
In this instance, [REDACTED] contacted Kidde immediately after the incident. We advised [REDACTED] that CO levels would have to reach certain levels at or near the alarm in order for the alarm to sound. Kidde was concerned about the report, and in this unusual situation, asked [REDACTED] to return the alarms for further testing. As noted in the report to the CPSC, [REDACTED] retained the alarms. We have again reached out seeking their return for testing and analysis.
We apologize for any inconvenience this may have caused.

CPSC report 20200521-7C6DC-1982122. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Mar 2, 2019, sent to the company Mar 26, 2019, published by CPSC Apr 9, 2019

The product, in the report: A Carbon Monoxide Alarm, designed to last 10 years, arrived at my home when it was 17 years old.

I ordered a Carbon Monoxide Alarm from an Amazon.com seller, only to open it, and discover that it was manufactured 17 years ago. The alarm arrived in the original packaging, telling me that it was never used, but it sat for many years in a warehouse. Fortunately, Amazon will refund the money I paid, but there are too many of these alarms for sale on sites like Amazon, and eBay that are nearing, or beyond their useful life expectancy. Amazon, and eBay removed listings for the smoke alarms that were failures, when detecting smoke. I feel, Amazon, and eBay need to remove the CO alarms that are unlikely to protect us in the event of a furnace, stove, or fireplace chimney damper malfunction. Please, they need to carry new, or almost new home safety products.

Model
9CO5-LP2
Bought from
Amazon.com
Bought
Jan 16, 2019
Where
Syracuse, New York: Home/Apartment/Condominium
Who was involved
Unknown
The reporter’s relation to them
Self
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(4/24/2019) UTC Fire & Security : Thank you for submitting an incident report on SaferProducts.gov.
Kidde’s mission is to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent testing agency. Unfortunately, there are many third-party resellers on websites, such as Amazon, that re-sell product from various sources other than Kidde. As a result, older, dated product may be sold on these sites by entities other than Kidde. It is fortunate that this customer reviewed the date of manufacturing and appropriately determined that this was an older product. To insure that product being received is current, consumers should carefully select the vendor from whom they are purchasing product. We apologize for any inconvenience this may cause and sincerely thank you for your report.

CPSC report 20190302-DC726-2147382411. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Oct 11, 2018, sent to the company Nov 8, 2018, published by CPSC Nov 26, 2018

The product, in the report: Kidde Smoke CO Alarm Model #kn-cosm-iba

My Kidde Combo CO Alarm is defective and makes a chipping sound regardless of how many new batteries I use.

Model
Model kn-cosm-iba
Bought from
Installed by Builder
Where
Katy, Texas: Home/Apartment/Condominium
Who was involved
Unknown
The reporter’s relation to them
Self
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(12/10/2018) UTC Fire & Security : It is Kidde’s mission to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent, not-for-profit testing agency.
In the rare occurrence of an incident such as the one reported, we request that the customer supply us with the product involved. We will then conduct a thorough examination of the product in order to identify any potential issue with the alarm and required corrective actions, if any.
In this instance, it is important to note that the alarm “chirps” for a variety of reasons; only one of which relates to low battery. Accordingly, our customer service team will be reaching out to [REDACTED] to obtain the alarm for further testing and evaluation.
We apologize for any inconvenience this may cause and sincerely thank you for your cooperation. Your assistance will help us to continue developing high quality safety products.

CPSC report 20181011-A04AF-2147385061. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Jul 14, 2016, sent to the company Aug 25, 2016, published by CPSC Sep 9, 2016

The product, in the report: Smoke detector/carbon monoxide detector

Kidde Smoke Detector/Carbon Monoxide detector at fire station beeping every 60 seconds. Which normally means low battery. A new battery was installed device said push test button, the detector then sounded the fire alarm activation but did not cycle and test the CO Portion of the device. Also the green power light is showing that the device has A/C power when in fact it is sitting on my desk. As a Fire Marshal I have had similar issues with this style detector and would like to speak to someone.

Model
KN-COSM-1B
Where
North Kingstown, Rhode Island: Other Public Property/Office
Who was involved
Unspecified
The reporter’s relation to them
Unspecified
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(9/8/2016) UTC Fire & Security : It is Kidde’s mission to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent, not-for-profit testing agency.
In this instance, we have reviewed the report and we have contacted the individual who submitted the report. We have requested the product be returned so we can test and fully analyze the issue.
We apologize for any inconvenience this may have caused and appreciate your cooperation. Your assistance will help us to continue to develop high quality safety products.

CPSC report 20160714-32544-2147416872. Submitter: Local Government Agency Search for it on SaferProducts.gov
No one hurt
Made Jul 6, 2016, sent to the company Jul 14, 2016, published by CPSC Jul 28, 2016

The product, in the report: Kidde brand carbon monoxide alarm Model Number: KN-COB-DP-H Assembly Number: 900-0107 Date of Mfg.: 2000, September, 11 Issue No.: 1854

Kidde brand carbon monoxide alarm shorted out and melted the wall outlet in my home shorting out the entire electrical circuit.
Model Number: KN-COB-DP-H Assembly Number: 900-0107 Date of Mfg.: 2000, September, 11 Issue No.: 1854

Model
KN-COB-DP-H
Where
Creston, United States: Home/Apartment/Condominium
Who was involved
Unspecified
The reporter’s relation to them
Unspecified
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(7/29/2016) UTC Fire & Security : It is Kidde’s mission to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent, not-for-profit testing agency.
In the rare occurrence of an incident such as the one reported, we request that the customer supply us with the alarm identified in their report and information regarding the incident. We will then conduct a thorough examination of the alarm in order to identify any potential issue with the alarm and required corrective actions, if any.
Our customer service manager will be contacting the reporting customer so we can begin this return and evaluation process.
Kidde would also note that the subject alarm has exceeded its useful life span and would advise this customer, and others reading this report, to verify the date of their other alarms to ensure that they do not need to be replaced. Information regarding the life span of your smoke or CO alarm can be found in the product literature, and can also typically be found on the base of the alarm.
We apologize for any inconvenience this may cause and sincerely thank you for your cooperation. Your assistance will help us to continue developing high quality safety products.

CPSC report 20160706-0807F-2147417215. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Apr 17, 2015, sent to the company Apr 27, 2015, published by CPSC May 11, 2015

The product, in the report: Smoke and CO Detector

Kidde CO Detector would go off for no reason. Had the Fire Company out but they did not detect CO. Said it had to be the detect malfunction. Kept in up and in middle of the night it went off again and the windows were open. Just bought it over Christmas and installed it. It can not be the battery or need to replaced due to being old.

Model
P301K-CO
UPC
2534-7101-00 REV A
Serial number
5073
Bought from
Home Depot, Pennsylvania
Bought
Sep 26, 2014
Where
Ebensburg, Pennsylvania: Home/Apartment/Condominium
Who was involved
Unspecified
The reporter’s relation to them
Unspecified
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(5/6/2015) UTC Fire & Security : It is Kidde’s mission to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent, not-for-profit testing agency.
In the rare occurrence of an incident such as the one reported, we request that the customer supply us (if possible) with the alarm identified in their report and information regarding the incident. We will then conduct a thorough examination of the alarm in order to identify any potential issues and required corrective actions, if any.
To begin this process, our customer service will be reaching out to you at the address provided in this report. In the alternative, you can contact our customer service center at 1-800-880-6788.
We apologize for any inconvenience this may cause and sincerely thank you for your cooperation. Your assistance will help us to continue developing high quality safety products.

CPSC report 20150417-647FE-2147433651. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Jun 15, 2014, sent to the company Jun 23, 2014, published by CPSC Jul 8, 2014

The product, in the report: Carbon Monoxide Alarm/Detector

When I hooked up my new carbon monoxide detector, it didn’t work. I needed the detector in the house to comply with state fire code, but the product didn’t operate.

Model
Silhouette Carbon Monoxide Alarm 120V AC Low Profile
UPC
4787107426
Serial number
KN-COPF-i
Bought from
Kidde/UTC Website
Bought
Feb 28, 2014, about then
Where
Saint Paul, Minnesota: Home/Apartment/Condominium
Who was involved
Unspecified
The reporter’s relation to them
Unspecified
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

CPSC report 20140615-BEF11-2147443670. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Mar 2, 2014, sent to the company Mar 11, 2014, published by CPSC Mar 26, 2014

The product, in the report: Kidde Plug-In Carbon Monoxide Alarm with Digital Display and 9-Volt Backup

I have purchased a Kidde CO2 Alarm (KN-COPP-3 man. date 07/31/2013) in Jan. 2014 and installed in an outlet in the basement since then. ON Feb 28, I noticed that CO2 alarm’s display was not showing numbers, as support to do, but just a blinking dot. Locked at the manual, which identify the blinking dot as battery operated mode. Locking closer I noticed black marks on the outlet cover. Unplugged the CO2 Alarm I noticed the electrical outlet melted and CO2 Alarm transformer case melted too.

Model
KN-COPP-3
Bought from
The Home Depot
Bought
Jan 4, 2014
Where
Easton, Pennsylvania: Home/Apartment/Condominium
Who was involved
Unknown
The reporter’s relation to them
Self
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

CPSC report 20140302-ED575-2147446770. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Sep 17, 2013, sent to the company Sep 25, 2013, published by CPSC Oct 25, 2013

The product, in the report: Kidde Gas & Carbon Monoxide Alarm, 5 year warranty, multiple mounting opitons, protection during power outages with emergency battery, large digital display, diplays CO and GAS, recalls highest CO level detected, 2 alarms in 1 - propane, natural gas, carbon monoxide, loud 85 decible alarm.

I bought a Kidde Gas and Carbon Monoxide Alarm about a year ago, after we had had a natural gas leak. The gas pipe outside broke, and the gas came into the house through the dryer vent. There are not a lot of Natural Gas Alarms out there. Kidde is a good brand, so I bought their alarm. Well, the gas pipe broke again recently, and the house filled with gas. Thankfully, I have a good gas-sniffing nose, because the alarm registered 0 and did not even chirp once the entire time the gas was in the house. I’m glad we were not out of town or sleeping. The alarm was properly installed, plugged in, it had a working backup battery, and the test I performed afterwards was successful (the alarm is actually quite loud when it works). I called Kidde and they sent me 2 more of the Gas and Carbon Monoxide Alarms. I asked how I can be sure that these alarms will work in the event of another gas leak. The answer was, “YOU CAN’T. YOU JUST HAVE TO RELY ON THE MONITOR. THEY ARE SUPPOSED TO WORK.” I don’t feel any safer with the alarms. I have no confidence that any of the Kidde gas alarms will function as they should in the event of a gas leak. The scary part is that we won’t know if the alarm works until we have a gas leak. We could die in our sleep or blow up the house with the flick of a light switch. Kidde is selling a safety product that carries no assurance of working when needed.

Model
KN-COEG-3, P/N 900-0113
UPC
784908011305
Bought from
Lowes
Bought
Apr 3, 2012, about then
Where
Richardson, Texas: Home/Apartment/Condominium
Who was involved
Age 63, Female
The reporter’s relation to them
Unspecified
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(10/18/2013) UTC Fire & Security : Thank you for submitting an incident report on SaferProducts.gov. Kidde appreciates and considers any and all product feedback from its consumers.
Kidde considers the safety of its customers to be of the utmost importance. After reviewing our consumer call logs for the past three months we were unable to locate any record of a call mirroring the facts alleged in the Incident Description. In the rare occurrence of an incident involving any Kidde product, we request that the customer contact Kidde directly in order to supply us with the product and information regarding the incident. We will then conduct a thorough examination to determine the cause and the appropriate course of action.
Please contact our customer service manager, Theresa Farrell, at 919-304-8282 to initiate the examination process. To the extent we can obtain more information and conduct a full examination of the CO and Gas Alarm, Kidde will provide additional comments and/or information as necessary.
Kidde is committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent not-for-profit testing agency.
We sincerely thank you for your cooperation. Your assistance will help us to continue developing high quality products.

CPSC report 20130917-99144-2147451825. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Nov 11, 2012, sent to the company Dec 6, 2012, published by CPSC Dec 20, 2012

The product, in the report: Kidde Carbon Monoxide Detector

3 day old Carbon Monoxide detector failed to sound alarm with high CO levels. (Separate secondary alarm sounded. Fire department notified). Fire department found high CO levels, verified suspect CO detector was inoperative. Unit self-tests okay, but does not actuate during actual event. Unit Details: Kidde Single Station Carbon Monoxide alarm (Issue No 4477) Model KN-COB-B-LPM, Assemblt number 9CO5-LP. Date of Manufacture 2012, June, 25.

Model
KN-COB-B-LPM
UPC
UNKNOWN
Serial number
UNKNOWN
Bought from
Home Depot
Bought
Nov 9, 2012
Where
fort dix, New Jersey: Home/Apartment/Condominium
Who was involved
Age 27, Male
The reporter’s relation to them
Self
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(12/7/2012) UTC Fire & Security : Thank you for submitting an incident report on SaferProducts.gov.
Kidde’s mission is to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent not-for-profit testing agency.
With respect to your Kidde CO alarm, please be advised that in response to a rare incident such as the one you reported, we request that the customer contact Kidde directly in order to supply us with the product and information regarding the incident. We will then conduct a thorough examination of the alarm, including CO tests to understand if it is performing within the UL standard, to determine if there is an issue that requires corrective action.
Please contact our customer service manager, Theresa Farrell, at 919-304-8282 so we can begin this evaluation process.
We apologize for any inconvenience this may cause and sincerely thank you for your cooperation. Your assistance will help us to continue developing high quality products.

CPSC report 20121111-B8A84-2147462060. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Jan 17, 2012, sent to the company Feb 9, 2012, published by CPSC Feb 24, 2012

The product, in the report: Kidde CO Detector with display Model KN-COPP-B-LPM Assemply Number 900-0146-LP UL issue number 4356

Kidde CO Detector Model KN-COPP-B-LPM Manufacture Date November 23, 2011. Brand new detector installed batteries as shown in instructions. About 10 minutes later detector display went blank and a smell of plastic melting was detected. Removed batteries which were extremely hot to the touch. So hot that plastic was melted where batteries go. This product is not safe for the home, plastic could get hot enough to ignite a fire. Detector operates on 4.5 volts dc and without fuse protection batteries can supply enough current to start a fire.

Model
Model KN-COPP-B-LPM, Assembly #900-0146-LP, UL #4356
UPC
NA
Serial number
NA
Bought from
Amazon
Bought
Jan 14, 2012, about then
Where
Dallas, Texas: Home/Apartment/Condominium
Who was involved
Age 59, Male
The reporter’s relation to them
Self
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(2/17/2012) UTC Fire & Security : Thank you for submitting an incident report on SaferProducts.gov.
Kidde’s mission is to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent not-for-profit testing agency.
In the rare occurrence of an incident such as the one reported, we request that the customer contact Kidde directly in order to supply us with the product, the batteries, and information regarding the incident. We will then conduct a thorough examination of both the CO unit and the batteries to determine the cause and the appropriate course of action.
Please contact our customer service manager, Theresa Farrell, at 919-304-8282 so we can begin this evaluation process. After tests are completed, we will report the results back to you.
We apologize for any inconvenience this may cause and sincerely thank you for your cooperation. Your assistance will help us to continue developing high quality products.

CPSC report 20120117-299AE-2147471228. Submitter: Consumer Search for it on SaferProducts.gov
No one hurt
Made Jan 11, 2012, sent to the company Jan 20, 2012, published by CPSC Feb 3, 2012

The product, in the report: Kidde KN-COSM-XTR-B Nighthawk Combination Carbon Monoxide, Fire, and Smoke Intelligent Alarm

On December 31, 2011 I received a Kidde KN-COSM-XTR-B Nighthawk Combination Carbon Monoxide, Fire and Smoke Alarm I had purchased on amazon.com. I installed the batteries as directed and the green light flashed on indicating the unit was operational. But when I pressed the “Test” button, nothing happened, even after repeated tries.
So I mailed the unit back to amazon.com who promptly mailed out another different unit of the same model (they crossed in the mail). The second unit, which I tested today, exhibited the same problem. The test button worked only intermittently, about once every ten times I tried it, which didn’t inspire confidence it was going to work in an emergency. I called Kidde and explained everything to them. They told me to throw the unit in the trash and are sending me a new, more recently made one. My second unit was manufactured Feb. 22, 2010 (date is on the back of unit).
I didn’t throw the second unit away because after two failed units with me alone, I believe there may be an entire lot of this model that could be defective. And I don’t trust that Kidde, having asked me to throw it away, is going to recall these units. I’m concerned that some people may be using these alarms in their homes unaware that they may not work properly if there’s a fire or a carbon monoxide incident. They should be warned immediately. There is clearly something wrong with this model.
I would be happy to send you the defective unit should you need it to further evaluate the problem. Thank you for your attention to this matter.
[REDACTED]

Model
KN-COSM-XTR-B
Bought from
Amazon.com
Bought
Dec 27, 2011, about then
Where
Fairfield, Connecticut: Home/Apartment/Condominium
Who was involved
Age 64, Male
The reporter’s relation to them
Self
As this report names them
Brand Kidde, made or sold by UTC Fire & Security
How badly, in CPSC’s words
Incident, No Injury

The company’s comments, in its own words

(1/26/2012) UTC Fire & Security : Thank you for submitting an incident report on SaferProducts.gov.
Kidde’s mission is to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent not-for-profit testing agency.
Based on the information you supplied it cannot be determined whether the problem you experienced was a result of shipping damage or some other issue. However, it is clear that the issue made itself known when you conducted the “push to test” as instructed in the Owner’s Manual. Kidde instructs that a “push to test” be performed prior to installation to insure the unit is working properly.
With respect to your alarms, we request that you contact us directly in order to supply us with the product and information regarding the incident. We will then conduct a thorough examination of the alarm to determine if this problem occurred as a result of shipping and if there is an issue that requires corrective action.
Please contact our customer service manager, Theresa Farrell, at 919-304-8282 so we can begin this evaluation process.
We apologize for any inconvenience this may cause and sincerely thank you for your cooperation. Your assistance will help us to continue developing high quality products

CPSC report 20120111-1B02A-2147471409. Submitter: Consumer Search for it on SaferProducts.gov
Emergency room
Made Dec 14, 2011, sent to the company Mar 5, 2012, published by CPSC Mar 19, 2012

The product, in the report: CO detector

Consumer stated that she had opened her oven heat her home which cause her 11 year old child to get CO poisoning. However, the CO detector didnot alert her that the levels of CO had been elevated in the home.
Consumer stated that the child became ill and she had to be taken to the Children’s hospital in Boston Ma by the ambulance where she was treated and released, this had been the second time.
The child still develops symptoms from the CO poisoning.
Consumer had not contacted the manufacturer because she is not sure of a contact nmber.
Consumer is concerned that this Co is a safety hazard and should be reported.

Model
KN-COB-B
UPC
n/a
Serial number
As#9C05
Bought from
unknown, Massachusetts
Bought
May 31, 2011
Where
Boston, Massachusetts: Home/Apartment/Condominium
Who was involved
Age 11, Female
The reporter’s relation to them
My Child
As this report names them
Brand Kiddie, made or sold by UTC Fire & Security
Reports CPSC links to it
20120301-501C1-1234854
How badly, in CPSC’s words
Injury, Emergency Department Treatment Received

The company’s comments, in its own words

(3/5/2012) UTC Fire & Security : Thank you for submitting an incident report on SaferProducts.gov.
Kidde’s mission is to help protect people and property from fire and its related hazards. We are committed to engineering and manufacturing quality products, which is why all of Kidde’s products meet or exceed the strict third-party standards set by Underwriter’s Laboratories (UL), an independent not-for-profit testing agency.
Please be advised that your kitchen oven if working properly should not be giving off dangerous levels of CO regardless of whether the oven door is open or closed. If you suspect that your oven appliance is emitting CO you need to have it checked by a qualified repairman immediately.
With respect to your Kidde CO alarm, please be advised that in response to a rare incident such as the one you reported, we request that the customer contact Kidde directly in order to supply us with the product and information regarding the incident. We will then conduct a thorough examination of the alarm, including CO tests to understand if it is performing within the UL standard, to determine if there is an issue that requires corrective action.
Please contact our customer service manager, [REDACTED], at 919-304-8282 so we can begin this evaluation process.
We apologize for any inconvenience this may cause and sincerely thank you for your cooperation. Your assistance will help us to continue developing high quality products.

CPSC report 20111214-C57C3-1220101. Submitter: Consumer Search for it on SaferProducts.gov

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

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.

Kidde carbon monoxide alarms

At a glance

By month

How badly anyone was hurt

The reports, as CPSC published them

CPSC’s disclaimer

Sources

How to read a record

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A number never stands alone.

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