Carbon Dioxide indoor sources
How to reduce CO2

What is a normal CO2 indoor level?

Normal CO2 concentrations in occupied indoor spaces with good air exchange is from 400 to 1,000ppm.
The symptoms of drowsiness and poor air start when the CO2 level reaches from 1,000 to 2,000ppm. We, humans, are the main indoor source of carbon dioxide in most buildings.

To better understand what stays behind the numbers:

1. Outdoor CO2 usual levels are 350–450 ppm. The indoor concentrations are always higher due to the lack of ventilation and tighter built areas with two or more people inside.

2. Ppm is abbreviation for parts per million, often used to express the dilute concentrations of substances.

What happens if CO2 levels get high?

When too much carbon dioxide is in the air, the gas enters the bloodstream as a result of hypoventilation. People with asthma and respiratory illnesses cannot breathe well in a room with a high carbon dioxide content, where there's not enough oxygen, that enters the lungs.

How do I lower co2 levels in my home?

To tackle indoor air pollution and reduce CO2 levels:
Increase Ventilation
CO2 levels are generally lower in the open air; Room air exchange and diluting it with the outside air will prevent high concentrations of carbon dioxide. You can purchase and install a good ventilation system or if you do not need a fancy tool - just keep your windows open so that carbon dioxide can leave the room.
Don't smoke inside
If you are a smoker and don't plan to quit any time soon - smoke outside, far from open windows to prevent the the pollutants from seeping back the house. Cigarettes release large amounts of CO2 that can get trapped inside for ages.
Photo by Bart Scholliers on Unsplash
Reduce the use of gas/wood stove
This is a must for the kitchen area - cause when we cook, CO2 concentration levels rise triple. If your stove is gas or wood, non-induction one - don't forget that the open flame consumes oxygen and produces carbon dioxide. then count how many meals you cook at home and how often you use the stove.

Not only the fire (combustion reaction) uses up the indoor oxygen but replaces it with CO2. If are a fan of the Hygge lifestyle and burn 2-3 candles in the evening or sit by the fireplace for hours, you may be getting higher doses of CO2 than you are aware of.
Photo by Khanh Dang on Unsplash
Vacuum (or if you can - get rid of) rugs and carpets
Especially if you have pets. Not only duct mites living in rugs but also pet dander constantly moves around the house collecting extra duct from floor and rugs, delivering it directly to the noses and lungs of the family members.
Go all-natural
No chemical-based cleaning products or odors are welcome.
Purify the air
Last but not the least - take care of the bedroom area
We spend 1/3 of a lifetime sleeping and it's not smart to neglect the effect sleep has on our lives. Studies show how fresh indoor air environment helps people to perform better and be healthier and active throughout the day.

Keeping the bedroom door and windows open, before and after sleep, will help you relax better and feel more energetic n the morning. As you sleep, you exhale carbon dioxide and when the room hasn't been ventilated for days, imagine the concentrations you're breathing in. No wonder people get headaches and sleep badly. Who can do the opposite?

Get a CO2 Monitor and make sure the exhaust system works properly.

The typical service steps you might require to learn what CO2 indoor air you are dealing with - get or rent an Air Quality Monitor to scan the house for a few days. Most of them now have an Alexa integration and will show you the frank data of CO2 and VOC levels.

Then when you learn the data - it depends how far from the norm results might be - don't wait and get your air ducts cleaned and filters changed.
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