Features:

  • Protects you and your family from two deadly threats: carbon monoxide and explosive gas.
  • Sounder Alarm – The KN-COEG-3 offers a loud 85-decibel pulsing alarm that will sound to alert you to a potential problem.
  • Digital Display - Displays the level of carbon monoxide the unit is sensing.
  • Peak Level Memory - Recalls the highest CO concentration detected
  • Test/Reset Button - Tests unit’s electronic circuitry operation and allows you to immediately silence the alarm
  • Two alarms in one detects carbon monoxide and explosive gas
  • Three convenient mounting options
  • Digital display and peak level button displays the peak CO level recorded by the alarm since it was last reset
  • Battery backup 9 volt battery included
  • Kidde’s carbon monoxide alarms meet the requirements of Underwriters Laboratories (UL), an independent facility that tests products for compliance with widely-accepted safety standards
Excellent

This is my favorite carbon monoxide detector. It works great. I have purchase in the past battery operated ones and found that I have to replace the batteries way to often but not with this one because you plug it in and it has a battery backup. I love the display. In fact the chimney for my natural gas furnace was messed up and the house filled with carbon monoxide. The fire department came in and check the levels. They compared there expensive detectornto rhis one and said this one was extremely accurate. I now own 3 of these. They saved my life.

Meet our needs and may have saved our lives

This is our 2nd unit. The first expired with age. We had actually bought the first one at a Menards store when our state passed a law that all residences must have a carbon monoxide detector. But by the time we got around to buying a device, this combo device (CO and Gas) was the only thing available at the store (all other less expensive units had been sold out). Later we had a high efficiency furnace installed. The new furnace unfortunately has a lot of vibration when the fan is in high speed mode. The installer has not been able to correct this problem. The result has been that the gas lines have developed leaks. The leaks were so small we could not smell or even detect the problem using soapy water on the pipe fittings. The gas detection part of this detector went off several times before we finally call out the installer. He checked with his more precise detection device and confirmed the gas leak. We have been extremely happy with the device. I have seen a lot of negative reviews about this device going off unexpectedly, but we have not experienced that. These units (all smoke, CO and gas detectors have a limited lifespan about 5 or maybe 7 years). We used our first unit longer than that until it finally developed an error (due to age). We were so happy with it we went back to Menards to try and buy it again. They no longer have it available, so we were happy to find it on Amazon.

Saved my life. Guess what, you can't "smell gas" when you are asleep.

After reading the negative reviews, I had to post- because this thing probably saved my life. To the people who say "if gas is leaking, you'll smell it", i can reply, "Not if you're asleep and/or across the house, you won't". And if you're asleep during a sudden gas event, you might not wake up. My old natural gas boiler failed at 2 am. on a 15-degrees-below-zero night. This Explosive Gas alarm woke me from across the house, and without me being able to smell gas in my bedroom yet.. and i'm very sensitive to that scent. The responding fire department told me that the boiler was on verge of exploding/catching house on fire. This was five or six years ago, and the alarm is just now needing replacement (it's doing its "end of life" beeps). I have not had the false alarms that people report, but it's installed in my closed-door utility room, where only a (new) closed-system boiler and water heater are within a few feet. No alarms from those, nor from ordinary cooking etc in the nearby kitchen, but it did detect when someone left the gas kitchen stove unlit at least once. So i'm guessing that placement, and environment, might possibly be key as far as false alarms- presumably, it can't be TOO close to kitchen stoves or chemical/gas-like smells (and if you've got chemicals strong enough to set off a gas alarm repeatedly, maybe you could reconsider what you choose to have in your environment). My only note is that many of these are rated for ten years of life, and this one lasted no more than 6, according to when Amazon says I bought it. However, since that averages out to less than $8 a year, and it probably saved my life; I'm not complaining:-). I won't be without a gas detector again. PS, Natural Gas rises, but LP/Propane gas sinks , so you need to be careful to pay close attention to instructions on where you mount it based on what type of appliances/gasses you have.

The sensor that came with my RV was too sensitive ...

The sensor that came with my RV was too sensitive to the house battery condition and would go off during dry camping. I removed it, disconnected it and re-installed it to cover the hole, and I now use this one when dry camping. You will need to have replacement batteries on hand, though, because they're only supposed to be used as backup, and will probably not last more than a couple of days.

Better safe than sorry

I had this brand for many years and it finally died. Therefore, I bought the same brand. I works very well. I have a gas stove and if one leans against the dials on the stove and moves, they can turn on the gas. I did have this happen, which is why I bought this alarm years about 11 years ago. A close neighbor smelled the gas while I was at work and ran in and opened windows. I thank her every time I see her. It did go off on me once, when I sprayed the house with Lysol disinfectant spray. It is extremely loud. I would wake anyone up if there was a gas leak.

Needs a different new battery if it keeps beeping

My only issue with this alarm is that it seem to arrive with an old battery included inside of the packaging. The device started to constantly beep after the third day of use. I could not figure out what the problem was, as it was already plugged into a wall outlet for external power. It seems that if the internal back-up battery is weak, the alarm is start beeping. I switched it with a new battery and everything is working perfectly now.

Essential for Elderly Folks

This is a replacement for an existing unit at my mom's house. She had a small gas leak & it did alarm, so worth it's weight in gold. The only thing to be aware of is it will also pick up any kind of aerosol spray, so if you are installing for an elderly parent, be sure & let them know! Keep in mind your elderly mom/dad might forget to turn things off, so get them one of these.

Makes us feel safer at home

Gives my Wife and I lots of peace of mind for us and our pets. The siren is loud enough that it wakes me up. This is my second of this item as the first one got old and seemed to malfunction after about 8 years which actually it has a warning for. My original one was very sensitive to the water heater, so we moved it into an adjoining bathroom nearby the heater and water heater. Actually upon reading the new manual you are not supposed to put it in the same room as the heater/water heaters anyway. Hope to get 8 years out of this new one.

A lot of misinformation in negative reviews

I didn't have a natural gas detector so I got this one to put in my basement, which is the only place in my home with natural gas. Installation is easy, just plug it in. The plug portion can be removed from the back of the unit and the main part located at a different level than the plug. Natural gas is lighter than air and propane is heavier so they recommend that it be located high in the room if you have natural gas and low if you have propane. A lot of the negative reviewers don't appear to understand when the unit is supposed to sound the alarm. Carbon monoxide is poisonous at high concentrations. Natural gas and propane are not poisonous but can be explosive at high concentrations, the levels are well established. At very high concentrations they can cause suffocation because they displace oxygen. The packaging says that it might take up to 4 hours to sound depending on the concentration of CO, this is consistent with the UL standard. In fact a unit would fail the UL test if it went off within 30 days when there are low levels of CO. This is to minimize nuisance alarms, the alarm wouldn't do any good if people got frustrated and disabled it. The gas detector alarm is specified to sound by the time the concentration reaches 25%, this is below the explosive threshold. Just because there is a heavy gas odor doesn't mean there is an immediate danger. One negative reviewer tried to test it with a cigarette lighter, which typically use butane. This unit is only specified to test for natural gas (methane) and propane. The warranty is 5 years, the unit will stop working after 7 years and should be replaced. This is a safety feature, not planned obsolescence.

Works great!

Turned on the gas stove, waiting for a couple minutes, and the alarm went off just fine. Obviously we will not test CO carbon monoxide, because that’s way too dangerous; but for gas it works fine, so I assume for carbon monoxide it works just as well. I highly recommend this product.

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