10 Best Hvac Multimeters 2025 in the United States

The Fluke 323 Clamp Meter is a reliable tool for both commercial and residential electricians, particularly in the HVAC field. It measures AC current up to 400 amps and AC/DC voltage up to 600 volts, which covers most basic needs for HVAC work. The inclusion of true RMS technology ensures that you get accurate readings on both linear and non-linear loads, making it versatile for various electrical scenarios.

The meter is designed for durability, meeting IEC safety standards and rated for CAT IV installations up to 300V and CAT III installations up to 600V, ensuring it can handle tough environments safely. However, it's worth noting that the meter does not measure DC current, which could be a limitation for some specialized tasks. The audible continuity sensor and resistance measurement up to 4 kilo ohms add further utility.

The device is lightweight at 200 grams and comes with a soft carrying case, making it portable and easy to handle. The display is clear and easy to read, although it lacks advanced connectivity features, which might be a drawback for users who rely on data logging and remote monitoring. The product includes a two-year warranty, adding peace of mind. The Fluke 323 offers robust performance, accuracy, and safety for most HVAC applications but may fall short for those needing advanced features like DC current measurement and connectivity options.

The Fluke 902 FC HVAC True-RMS Clamp Meter is designed specifically for HVAC professionals. One of its key strengths is its accuracy, as it utilizes True RMS technology to provide precise voltage and current measurements, even with non-linear signals. Auto-ranging is another useful feature that helps in automatically adjusting the range for measurements, simplifying the process for the user. Additionally, it has a temperature measurement function that is critical for HVAC work, allowing users to capture flue gas temperature and measure thermistors up to 60k ohms.

The durability of this device is also notable, as it is built to withstand the rigors of industrial environments and is of a robust build quality from a reputable brand. The device is also lightweight at 419 grams and conveniently battery-powered, with 2 AA batteries included, ensuring it’s portable and ready to use out of the box. Connectivity is a standout feature as well, with Bluetooth functionality that allows the meter to connect to your smartphone, thereby enhancing safety and efficiency by enabling remote monitoring and data logging. The display is clear and easy to read, which is essential for quick and accurate readings in the field.

On the downside, the product dimensions are somewhat bulky, which might be a concern in tight spaces. Additionally, while Bluetooth connectivity is a great feature, it might be unnecessary for users who prefer simpler tools without such technology. Lastly, it may be on the pricier side compared to basic models, but the advanced features and reliability could justify the cost for professionals who require precision and durability in their tools.