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Not sure why the post only mentions Amazon.
Same price in-store at Walmart.
https://www.walmart.com/ip/Kidde-...2/39360952
11/29 Amazon has dropped price to $11.84 (looks like to match Walmart.com price).
Link to carbon monoxide detector with digital display for $18.98 (I have one in my MBR and use the basic one for my other BRs): DEAD - NOW $29.90
Kidde Nighthawk Carbon Monoxide Detector, AC-Plug-In with Battery Backup, Digital Display
https://www.amazon.com/Nighthawk-...00002N86A/
https://www.walmart.com/ip/Kidde-...arm/870340
Link to combined carbon monoxide and gas detector for $29.99 (I have this one next to my gas dryer): DEAD - Now $34.50
Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural, & Explosive Gas Detector, AC-Plug-In with Battery Backup, Digital Display
https://www.amazon.com/Nighthawk-...0002EVNJ6/
Amazon has raised prices, but walmart.com still has for $11.84.
https://www.walmart.com/ip/Kidde-...hbdg=L1700
12/6 After raising price, Amazon has dropped price again to $11.84 to match Walmart.com.
expiredvsspam posted Nov 23, 2021 02:08 AM
Item 1 of 5
Item 1 of 5
expiredvsspam posted Nov 23, 2021 02:08 AM
Kidde Plug-In Carbon Monoxide Detector w/ Battery Backup
$12
$30
60% offAmazon
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Explosive gas will not trigger carbon monoxide detectors, even at high concentrations. Usually people rely on the bad smell (like rotten eggs) that is added to natural gas/propane as a warning system. However, we have seen situations where gradual accumulation prevented detection due to nose blindness. A few years ago a man and woman came home from date night and could smell natural gas in their driveway as they pulled up. Their two teenage boys were at the back of the small house (1500 sq ft) playing video games and hadn't noticed a thing. One of them had nudged a kitchen stove burner knob and it was hissing out gas, filling the house. After that, they got one of the these alarms [amazon.com] and put it in their kitchen. Tested by leaving a burner slightly on, unlit...the alarm went off in under five minutes. I have the same unit in my own kitchen.
One last important point: if you smell gas in your house, do not start opening windows to air it out. Explosive gasses are only explosive at relatively low concentrations with air. Propane is only about 10%; methane around 15%. By the time you smell it, it's possible your concentrations could be higher than that. Opening windows could pull you back into the "danger zone". Don't ventilate; evacuate. Call the fire department. We can determine the concentrations and ventilation needs, as well as speed ventilations with fans that are low-risk for causing explosions.
Remember, as a general rule (in the US at least):
• We won't charge you for our help
• You are not bothering us
• If anything, you are probably making our day more interesting
• It is good practice for us
• We are then on-hand in case anything does explode
Alright, enough rambling from me. Be safe, everyone.
Per EPA.gov
https://www.epa.gov/indoor-air-qu...e-detector
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Explosive gas will not trigger carbon monoxide detectors, even at high concentrations. Usually people rely on the bad smell (like rotten eggs) that is added to natural gas/propane as a warning system. However, we have seen situations where gradual accumulation prevented detection due to nose blindness. A few years ago a man and woman came home from date night and could smell natural gas in their driveway as they pulled up. Their two teenage boys were at the back of the small house (1500 sq ft) playing video games and hadn't noticed a thing. One of them had nudged a kitchen stove burner knob and it was hissing out gas, filling the house. After that, they got one of the these alarms [amazon.com] and put it in their kitchen. Tested by leaving a burner slightly on, unlit...the alarm went off in under five minutes. I have the same unit in my own kitchen.
One last important point: if you smell gas in your house, do not start opening windows to air it out. Explosive gasses are only explosive at relatively low concentrations with air. Propane is only about 10%; methane around 15%. By the time you smell it, it's possible your concentrations could be higher than that. Opening windows could pull you back into the "danger zone". Don't ventilate; evacuate. Call the fire department. We can determine the concentrations and ventilation needs, as well as speed ventilations with fans that are low-risk for causing explosions.
Remember, as a general rule (in the US at least):
• We won't charge you for our help
• You are not bothering us
• If anything, you are probably making our day more interesting
• It is good practice for us
• We are then on-hand in case anything does explode
Alright, enough rambling from me. Be safe, everyone.
Our community has rated this post as helpful. If you agree, why not thank odbal
My motto with alarm systems is simple: better to have it and not need it, than need it and not have it.
Our community has rated this post as helpful. If you agree, why not thank odbal
The gas itself is explosive when mixed with air in concentrations around 10-15%. When burned in a controlled way, this is great...it heats our water, our pots and pans, etc. But that "controlled way" depends on the gas burning completely to form carbon dioxide (CO2), which is the same stuff we breathe out and plants breathe in....harmless as long as it's not the only gas in a room. But if something goes wrong with the burning process, one of two dangerous gasses can be released:
Carbon monoxide detectors cannot detect pure explosive gas, and explosive gas detectors cannot detect carbon monoxide. Because gas-fueled appliances can emit either dangerous gas, it is my recommendation that owners have both alarm types.
I hope this makes sense. Please, don't hesitate to let me know if you have more questions. I'm always happy to share knowledge.
Guaranteed Ten Year life from date of first power on too. (1st Alert is only 7 years)
The AC plug is non-polarized & can be rotated 90-degrees.
Does not block second outlet in a typical home duplex fixture. Included 2X AA Alkaline batteries.
Our community has rated this post as helpful. If you agree, why not thank ben850
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In my case when I asked for their help they came to the house (fire engine and a full crew).
Explosive gas will not trigger carbon monoxide detectors, even at high concentrations. Usually people rely on the bad smell (like rotten eggs) that is added to natural gas/propane as a warning system. However, we have seen situations where gradual accumulation prevented detection due to nose blindness. A few years ago a man and woman came home from date night and could smell natural gas in their driveway as they pulled up. Their two teenage boys were at the back of the small house (1500 sq ft) playing video games and hadn't noticed a thing. One of them had nudged a kitchen stove burner knob and it was hissing out gas, filling the house. After that, they got one of the these alarms [amazon.com] and put it in their kitchen. Tested by leaving a burner slightly on, unlit...the alarm went off in under five minutes. I have the same unit in my own kitchen.
One last important point: if you smell gas in your house, do not start opening windows to air it out. Explosive gasses are only explosive at relatively low concentrations with air. Propane is only about 10%; methane around 15%. By the time you smell it, it's possible your concentrations could be higher than that. Opening windows could pull you back into the "danger zone". Don't ventilate; evacuate. Call the fire department. We can determine the concentrations and ventilation needs, as well as speed ventilations with fans that are low-risk for causing explosions.
Remember, as a general rule (in the US at least):
• We won't charge you for our help
• You are not bothering us
• If anything, you are probably making our day more interesting
• It is good practice for us
• We are then on-hand in case anything does explode
Alright, enough rambling from me. Be safe, everyone.
FWIW, since it's sold by Amazon.com, I was able to use an Amex reward point for 30% off.
We have a two story house and have a CO2 detector on each floor. Is that enough or would having 2 per floor be overkill? Downstairs is our living area plus a bedroom, upstairs is three bedrooms.
FWIW, since it's sold by Amazon.com, I was able to use an Amex reward point for 30% off.
We have a two story house and have a CO2 detector on each floor. Is that enough or would having 2 per floor be overkill? Downstairs is our living area plus a bedroom, upstairs is three bedrooms.
All that said, cost can definitely be a factor in the "overkill" regard. I do feel like more than two might be wise in a 2-story house. My concern would be that concentrations could already be extremely high by the time one is triggered, and depending on where you are positioned relative to the CO source and the detector, you might already be breathing it in. As I understand it, the speed and intensity at which weakness, drowsiness, and loss of consciousness come on is startling. The last thing you want is to be on the couch, hear the alarm, and then realize you can't even stand up. Or, worse, have it happen at night and never wake up at all.
Smoke detectors are placed in every room for two reasons: 1. fire can start anywhere, and 2. to maximize alerting throughout the house (especially when detectors are interconnected so they all go off if one goes off). Ostensibly, CO is far less likely to come from anywhere in a house...but it can drift anywhere, and you can never be certain what path it might take.
Prime example: earlier this year, a local business called 911 because on of their employees had a seizure. Crews came, met the employee (and helpers) in the parking lot, assessed and transported. Less than an hour later, they got called back because multiple people were getting sick. This time, they went inside, and the CO detectors they wear started going off. Turns out there was a malfunction with one of the building's boilers, and while they had CO detectors near the boiler itself, this somehow vented gas directly into the HVAC system, so it didn't build up near the boiler...it was sent directly to the workers' area.
It is my understanding that the business now has CO detectors all over the place, and many illnesses (one near-death) could have been avoided if they'd been everywhere in the first place. I don't believe the business was violating any safety regulations, nor that they didn't care, they just didn't know, you know?
In my case when I asked for their help they came to the house (fire engine and a full crew).
LOL, seriously though, it is. If we take an engine out, it needs to be fully staffed (min. 3 people in my district with our engines), and we have to have all our gear so we're ready in case we get called to a fire from wherever we're at. At my station specifically, we'd have probably come with 1-2 crew members in our "Brush Rescue" (off-road pickup), just to avoid putting the engine an 3+ crew members in use. But we're a small department with only two engines and a rescue, so there may be more resources in your area (or that was just the logical crew set to go).
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