If power goes out just crack a window. The CO2 will normalize. You do not need to open a window fully for this to happen
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Indeed, I have been speaking to this for many years. Measuring efficiency of H/ERVs is actually much more complicated than most know. That said, there is a fundamental difference between PHI and HVI/AHRI. PHI measures efficiency with the... (More)
Frank- Vive la difference!
Depending on location this issue of testing methods and modeling of ventilators for PH certification can be a pretty big deal for clients when it comes to supply chain and the desire to avoid sole sourcing.... (More)