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I monitored our indoor #ventilation for the last 7 days using an #aranet to measure CO2 levels. We only have "natural" ventilation (i.e. windows opened partly) in all rooms except the kitchen and bathroom. As you'd expect, ventilation is better on windy days. But overall the CO2 levels are higher than I'd hoped. Are there any solutions to improve ventilation that don't require major remodeling? #airquality
This is a screenshot from the #aranet4 of the past 7 days:

I've had the same experience here in #Canada. When I started using my Aranet4 to monitor #airquality in my home office, I found that CO2 levels could easily exceed 1000 ppm. My house was built in 1999 and is quite tight based on the energy efficiency testing we've done.

I'm looking into retrofitting an energy recovery ventilator to help improve our indoor air quality since opening the windows in winter isn't a great idea on a -20 ΒΊC day!
I wouldn't be too worried about these levels, but if you want running some exhaust fans or box fans at the window might force fresh air exchange.
@R Subramanian thanks, this is with just us two in the living room though. My main concern is that it is inadequate ventilation when we have visitors coming over, then it quickly goes above 1400ppm. I'll look into some small fans, thanks for the tip!
You are welcome! The other option is to use portable HEPA air purifiers, which might be more effective especially with guests and in cooler weather.

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