If only there were cheap differential pressure sensors that could read in-h2o....
https://www.amazon.com/Professional...tial+pressure+sensor+hvac,aps,145&sr=8-4&th=1
https://www.amazon.com/Handheld-Man...erential+pressure+sensor+hvac,aps,145&sr=8-20
https://www.amazon.com/Professional...tial+pressure+sensor+hvac,aps,145&sr=8-4&th=1
https://www.amazon.com/Handheld-Man...erential+pressure+sensor+hvac,aps,145&sr=8-20
Last edited: