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A comment on Heat pumps of the 1800s are becoming the technology of the future. Parent comment

Re:Heat pumps of the 1800s are becoming the technology of th... by biofunsf on Tuesday January 17, 2023 @12:02AM (#34409331)
digression: Any recommendations for a good CO2 detector?
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Re:Heat pumps of the 1800s are becoming the technology of th... by imp0cat on Tuesday January 17, 2023 @02:15AM (#34409913)
TFA Dostmann AirCO2ntrol Mini is a relatively cheap one that works well.
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Re:Heat pumps of the 1800s are becoming the technology of th... by NavinF on Tuesday January 17, 2023 @03:50AM (#34410434)
AutoPilot APCEM2

The only requirement is "2 channel low drift NDIR gas sensor". Cheap CO2 detectors either have zero IR sensors (instead they guesstimate eCO2 using a VOC sensor) or a single IR sensor that requires weekly calibration outdoors or it will just assume that the lowest sensor reading means 400ppm.

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