Ducting Systems and Air Ventilation - CO2 and Air Ventilation

I have recently purchased a good Carbon Dioxide detector. I usually open the window for fresh air to enter my room. The problem seems to be that during the night, the air quality worsens to 1300ppm. I tried to switch on the air conditioner and set it to 'ventilation' however the ventilation in the room does not improve.

Any suggestions?

:(

I would not be alarmed at 1300ppm. That is just slightly elevated. Do you have a fresh air intake on the unit. If not all your unit is doing is just moving the same air around.

I would not be alarmed at 1300ppm. That is just slightly elevated. Do you have a fresh air intake on the unit. If not all your unit is doing is just moving the same air around.

Thank you for your message.

My air con does not have the air intake. If I use the cooling system of my AC I think this kind of action does change the air flow.

Thanks.

Yep with out the fresh air you will not get the co2 down.

So with the cool option the fresh air does flow.

Thanks.

With out a fresh air duct you can not bring fresh air into the home from the unit. Fresh air is what lowers the CO2

Umm, two things. First of all CO is carbon monoxide. C02 is carbon dioxide.

CO will kill you. At a level over 200ppm it can kill you, easily.

Check this link:

Carbon Monoxide Questions and Answers (http://www.cpsc.gov/cpscpub/pubs/466.html)

If it truly is reaching 1300 it should be going into alarm. I would call the fire department next time this happens, they have the equipment to test the air.

Are you in a house or apartment?

The hole thread is about CO2!!!!!!!!!!!!!!!! Not CO!!!!!!!!!!!!!! At 1300ppm of CO silegnav would not be here to talk with us. CO2 read the post!

Oops. I don't know why I was so stuck on CO.

:coffee:

The hole thread is about CO2!!!!!!!!!!!!!!!! Not CO!!!!!!!!!!!!!! At 1300ppm of CO silegnav would not be here to talk with us. CO2 read the post!


Thanks God my country does not use CO but cylinder gas with bromide in it to smell it.

Thanks airman.....air intake is the solution.

Ummm I am reading the thread..but I'm a little confused....
I've never even seen a CO2 detector...whats the purpose of it? CO detectors sure..right beside the smoke alarms. But CO2???

I'd think putting a few plants in the room would lower the CO2 levels wouldn't it? Some do a much better job than others I've heard. You can't really lower the CO2 levels below whatever the conditions are outside I would think, w/o getting into some sort of chemical conversion stuff....???

And selignav...to clarify...CO (carbon monoxide) is a product of combustion...so any bottled gas (propane, LNG, etc) will produce CO when burned. You may not "use" CO..but you definitely produce it.

Ummm I am reading the thread..but I'm a little confused....
I've never even seen a CO2 detector...whats the purpose of it? CO detectors sure..right beside the smoke alarms. But CO2???

I'd think putting a few plants in the room would lower the CO2 levels wouldn't it? Some do a much better job than others I've heard. You can't really lower the CO2 levels below whatever the conditions are outside I would think, w/o getting into some sort of chemical conversion stuff....???

And selignav...to clarify...CO (carbon monoxide) is a product of combustion...so any bottled gas (propane, LNG, etc) will produce CO when burned. You may not "use" CO..but you definitely produce it.


If one has carbon dioxide more than 1000ppm in a room, one starts to feel sleepy, lethargic, smelling nasty odors and stiffness. If a room has 5000ppm of co2, then it can be deadly.

CO2 detectors can be found in offices, at home, in shopping malls. Certain co2 dectectors are connected to the windows system to open automatically to let fresh air enter the building. A good co2 detector which has a lot of different readings is the ZyAura ZG106 series. It has an alarm when co2 levels are becoming high.

:thumbup:

Thats not even close to what I can find from multiple sources..granted I can't truly vouch for the accuracy. All I've found says that in concentrations near 10,000 ppm the symptoms you mentioned can occur quickly, not the 1000ppm you stated.

I have found that chronic exposure to levels 1000-2000 can cause such symptoms..but that would be 24/7. Most OSH limit 8 hr exposure to 5000ppm

Not arguing..just want to insure information posted is accurate....kinda goes with the job...lol. If you have other info sources (not from a seller of detectors) I would love take a look....

ASHRAE is 900 PPM for 8 hour. We don't even worry to much about it tell it gets over 2000. 1000ppm is nothing would not worry about it in a home.

Normal outside levels 350-450 PPM

Acceptable levels less than 600 PPM

Increased complaints of stiffness and odors 600 to 1000 PPM

ASHRAE and OSHA standards 1000 PPM

Increased complaints of general drowsiness 1000 to 2500 PPM

Adverse health effects 2500 to 5000 PPM

Maximum allowable concentration for 8 hour period 5000 PPM


CURRENTLY ACCEPTED

MEDICAL SYMPTOMS OF CARBON MONOXIDE POISONING

Slight headaches, tiredness, dizziness, and nausea after 2-3 hours 200 PPM

Frontal headaches within 1-2 hours, life threatening after 3 hours 400 PPM

Dizziness, nausea and convulsions within 45 minutes. Unconsciousness

Within 2 hours. Death within 2-3 hours. 800 PPM



Headache, dizziness and nausea within 20 minutes. Death within 1 hour. 1,600 PPM

Headache, dizziness and nausea within 5-10 minutes.

Death within 30 minutes. 3,200 PPM

Headache, dizziness and nausea within 1-2 minutes.

Death within 10-15 minutes 6,400 PPM