While no longer required in the ASHRAE 110 -2016 Testing protocol, factory calibration is still available. To determine if you need a factory calibration, go into menus and select calibrate and find the Cal Factor. If the Cal factor is between 0.75 and 1.25 you don’t need a factory calibration. However if you Cal Factor is outside the range you should have it calibrated. Units are calibrated in Phoenix. If you have questions about calibration please contact us.
