PCE-HVAC 3 is a multifunction climate meter, tester or diagnostic measuring device used for indoor climate and environmental monitoring. In addition to measuring relative humidity and ambient room / dry-bulb temperature, the meter calculates dew-point and wet-bulb temperatures in degrees Celsius (°C) and Fahrenheit (°F). Thus, heating, ventilation and air conditioning (HVAC) installations and HVAC system performance assessments are key applications of the PCE-HVAC 3 meter.

- Relative humidity measuring range: 0 ... 100% RH
- Ambient / dew-point temp. range: -30 ... 100°C / -22 ... 212°F
- Wet-bulb temp. range: 0 ... 80°C / 32 ... 176°F