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Sleeping with generator on.

Old 07-02-2019, 08:08 PM
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Default Sleeping with generator on.

We would like to anchor out but in the NC summer heat we need AC. We have a Kholer 7.3e 2 hard wired CO detectors and two battery powered ones. Iím still not 100% comfortable sleeping with it running. Is there anything I can do to make it safer or just not do it at all?
Old 07-02-2019, 08:18 PM
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Originally Posted by Lorne Greene View Post
We would like to anchor out but in the NC summer heat we need AC. We have a Kholer 7.3e 2 hard wired CO detectors and two battery powered ones. Iím still not 100% comfortable sleeping with it running. Is there anything I can do to make it safer or just not do it at all?
Where is the exhaust directed? Can you put it on a platform on the stern such as a swim platform or on the gunwale with the exhaust directed away from the boat? If you've got CO detectors, I wouldn't worry about it wherever it is.
Old 07-02-2019, 08:20 PM
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Did you ever try running up until you are going to sleep to see if it might stay cool enough till morning?
Old 07-02-2019, 08:22 PM
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CO2 detector with auto shutdown.
Old 07-02-2019, 08:24 PM
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Originally Posted by tad117 View Post
Did you ever try running up until you are going to sleep to see if it might stay cool enough till morning?
With the weather we are having right now in NC it won't stay cool for 30 minutes.
Old 07-02-2019, 08:31 PM
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Originally Posted by Lorne Greene View Post
We would like to anchor out but in the NC summer heat we need AC. We have a Kholer 7.3e 2 hard wired CO detectors and two battery powered ones. Iím still not 100% comfortable sleeping with it running. Is there anything I can do to make it safer or just not do it at all?
there are typically a couple weeks each summer where i run the genset almost 24x7

diesel and having a few CO detectors on-board makes me less worried

also my genset is about 40 feet away from where i sleep in a completely separate compartment with exhaust going out the back of the boat
Old 07-02-2019, 09:01 PM
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Originally Posted by NC_Native View Post
Where is the exhaust directed? Can you put it on a platform on the stern such as a swim platform or on the gunwale with the exhaust directed away from the boat? If you've got CO detectors, I wouldn't worry about it wherever it is.
exhaust exits on the port side barely above the water line with the water from the exchange unit. My only concern is itís gas which I think has more CO then diesel. The generator is in the engine compartment about 25-30 feet from our bed. Maybe I should open the hatch as an extra safety?
Old 07-02-2019, 09:31 PM
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Do you have exhaust fans that shut off then genny if they aren't running? Our genset is diesel but has the shutoff if the exhaust fan isn't running.
Old 07-02-2019, 10:02 PM
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If your AC will keep up with the extra demand, open the hatch a small amount over your berth and another down stream.
The generator is running all the time anyway, so if your AC has to work a little harder you are not going to burn that much more fuel.

You can never be too safe, but I think you have it covered with multiple detectors and a proper generator installation.
Old 07-03-2019, 01:46 AM
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I have done it, Make sure you have at least 1 carbon detector located in the same compartment as you. Also make sure there is another one working on the boat in the main cabin area.. That said,
My geni was a fixed install, exhaust vented out the stern, and the cabin door was shut.
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Old 07-03-2019, 03:08 AM
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Opening hatch is useless. CO is heavier and comes from below. Detectors should be mounted lower and not up high.

Diesel has little to no CO. Like you canít die from it even if you tried to plumb it in to your enclosed space
Old 07-03-2019, 03:14 AM
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Its your boat and your life but there is exactly zero chance I'll ever sleep with a gas genset running. My advice - get a diesel or sleep in the heat. An uncomfortable night's sleep that you wake up from is still better than one you don't wake up from.
Old 07-03-2019, 03:19 AM
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Originally Posted by anthem-00 View Post
Opening hatch is useless. CO is heavier and comes from below. Detectors should be mounted lower and not up high.

Diesel has little to no CO. Like you canít die from it even if you tried to plumb it in to your enclosed space
Thatís not true. Yes, they produce much less CO than gas engines. But diesels can produce enough to be fatal in an enclosed space. Donít want someone reading your response and doing something really stupid.
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Old 07-03-2019, 04:44 AM
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Originally Posted by anthem-00 View Post
Opening hatch is useless. CO is heavier and comes from below. Detectors should be mounted lower and not up high.

Diesel has little to no CO. Like you can’t die from it even if you tried to plumb it in to your enclosed space
So the CO2 detectors I have should be mounted about 5' from floor and NOT on the ceiling where smoke detectors are typically mounted? ? Thanks.
Old 07-03-2019, 05:11 AM
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Originally Posted by Bayou Dularge View Post
So the CO2 detectors I have should be mounted about 5' from floor and NOT on the ceiling where smoke detectors are typically mounted? ? Thanks.
That is correct. Correct in that they shouldn't be mounted on the ceiling. The ones on my house are plugged into regular wall receptacles at shin height.

Last edited by NC_Native; 07-03-2019 at 05:21 AM.
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Old 07-03-2019, 05:15 AM
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Originally Posted by Bayou Dularge View Post
So the CO2 detectors I have should be mounted about 5' from floor and NOT on the ceiling where smoke detectors are typically mounted? ? Thanks.
um no. By that time itís too late. They should be mounted like 1ft off the ground. Certainly below your sleeping height. Itís a heavy gas - it accumulates and rises and is NOT like just mixed in with the air.
Old 07-03-2019, 05:18 AM
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Originally Posted by mattttt25 View Post


Thatís not true. Yes, they produce much less CO than gas engines. But diesels can produce enough to be fatal in an enclosed space. Donít want someone reading your response and doing something really stupid.
it might be possible but almost ridiculous levels to get there. Every study to arrive at this conclusion usually involves a real attempt of going above and beyond what can actually hsppeb. So yes - possible but pretty much unheard of
Old 07-03-2019, 05:24 AM
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I saw a YouTube video once where some guy was doing an experiment with a portable Honda generator by running it inside of an enclosed garage and measuring the carbon monoxide levels. After running it for several hours, the co levels were barely measurable and certainly not at a level that would be harmful or deadly. I understand that a garage is different than the cabin of a boat, but the fact is, those small generators don't really produce enough CO to fret so much about if you taken reasonable precautions.
Old 07-03-2019, 05:30 AM
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With your marine setup and a CO detector/alarm, I wouldn't be concerned at all. We've had a gen and AC running days at a time and never had an issue.
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Old 07-03-2019, 05:47 AM
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Originally Posted by airbrush View Post
With your marine setup and a CO detector/alarm, I wouldn't be concerned at all. We've had a gen and AC running days at a time and never had an issue.
We run ours all the time, it's part of the luxury of having a genset and A/C in the heat of the Florida summers. A proper install and CO detectors, I don't worry a whole lot, the CO detectors are super sensitive and will sound off an ear piercing alarm.
And to the comment regarding diesel wont kill you with CO, I wish that was true, lost a loved one to suicide with a running truck in a garage.

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