Today I will be reviewing Testo 435-2 HVAC Ventilation Analyzer. This meter is designed to be used for measuring room climates, inspecting and maintaining vent and air conditioning installations, and assessing the quality of room air. There are many options to choose from for the base model of Testo 435. This particular analyzer is a customizable handheld meter that can store up to 10,000 measurements and comes with PC software for report creation and analysis. Since this is a customizable meter, the unit does not come standard with a probe as there are a plethora of probes to fit your specific needs. This allows Testo to focus on the main meter itself to give it superior quality.

This quality is seen in not only the look and feel of the instrument, but also in the ease of operation. The Testo 435-2 is ruggedly built with a combination of ABS, TPE, and Metal components and has an IP54 protection class. The feel is also very ergonomic and weighs in at just under 1lb, striking a great balance between being too heavy or too light. The menu system is great as well and has preprogrammed profiles depending on what measurements you are taking. These preprogrammed settings influence what is displayed on screen, the assignment of the function buttons and also changes the structure of the menu making it more intuitive. While the unit is slender and sleek the display does a great job of maximizing its space. The screen is backlit with the light blue Testo normally defaults too. The LCD is very easy to read with the readings being large.

Testo does offer a kit for this version - Testo 435-2 (400563 4356). This kit comes with the 435-2 Unit as well as the 0632 1535 IAQ Probe, 0635 1025 Hot Wire Anemometer Probe, and a carrying case. The IAQ Probe measures CO2 (0 – 10,000 ppm), Humidity (0-100%), Temperature (0-122 F), and Pressure (+600 - +1150 hPa) while the Anemometer probe will give you a measurement for Temperature (-4 – 158 F) and Air Velocity (0-20 m/s).

When it comes to HVAC and Air Quality what parameters are most important to you?