Hi, folks! I've been lurking on this forum for some time without a membership because my Efficiency Kansas certification ran out years ago and I never pursued other certification. I haven't done a…Continue
"As I've said above, I already have plants. They only take in net CO2 when the sun is shining. At night they exhale CO2 just like we do. They may in fact be contributing to the nighttime high CO2 levels in the house."
"Simple solution is to just add some plants.
Building Science forgets about the wonders of nature. NASA has a list of the best plants for IAQ. Many plants will also aid with many potential IAQ issues like voc''s. I have been recommending…"
"One of the issues with the jump in readings - may also be related to the instrument design and its sensors. If the CO2 reading is via an electrochemical sensor and not a nondispersive infrared sensor (NDIR), then its possible…"
"But he could use a Panasonic in the bedroom... Or the work area that he sits in all day.
Depending on the size of the house... the total continuous fresh air needs may only be 40cfm to 100cfm. It doesn't sound like he's…"
"I keep going back and pushing an ERV, because they give you the ventilation, and you can have filtering on them to keep the pollen and dust outside... while also more or less maintaining the current RH balance. If you tighten up the…"
"I guess the word "quickly" may be misleading. It looks like a precipitous drop on the daily graph, but for example yesterday the CO2 readings went from 1078 ppm when we woke to 911 in under an hour when my wife left the house, but then…"
"What is discordant is that the CO2 in the Living Room is high even when the OP is home alone during the day, yet quickly goes down to normal levels when people leave. If the CO2 level drops fairly quickly, then the house must be well…"
"Look at one of the through the wall HRV/ERV's Lumnos about $1000 used in the bedroom and it still allows for the building envelop to be tightened. It would also make a big difference on those numbers (if they are even…"
"I don't know if I would buy more costly monitors, your readings are in-line with CO2 levels from being in a closed bedroom with people living and no ventilation. Put your money into a ventilation system and making your house tight."
"Considering I'm not currently working as an energy pro and am just looking to address issues in my own house and will most likely never get money back on the deal, those options are too expensive for me, but I hope they will be useful for…"
"I have the TIM10 Desktop CO2, Temp. & Humidity Monitor from co2meter.com. I have compared it with a $400 handheld, calibrated meter and a dedicated data logger (Lascar) and found the readings to be reasonably accurate (it is rated at +/-…"
"I want to second what Dennis has written. The CO2 in most low cost monitors is not sensed by a CO2 specific sensor - its inferred from other measurements using the same sensor that gives the TVOC value (also useless from a practical POV as you found…"
"What's breaking the bank? If you want an accurate traceable instrument - expect to spend more than $500 and then spend about $200 for recalibrating the device periodically.
Human bodies are pretty adaptable - if we are exposed to…"
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