10 Best Hvac Multimeters 2025 in the United States

The Fieldpiece SC440 True RMS Clamp Meter is a versatile tool designed specifically for HVAC professionals. It offers impressive accuracy, especially with True RMS sensing technology, ensuring precise VAC and AAC readings even on VFD systems. The auto-ranging feature simplifies usage, allowing the meter to automatically select the appropriate measurement range, which is particularly useful for those who may not be familiar with manual settings.

The device also includes various measurement capabilities such as temperature, capacitance, and microamps DC, making it suitable for a wide range of HVACR applications, including flame diode tests. Its durability stands out, being noted as one of the most robust clamp meters in the industry, capable of withstanding the rigors of daily field use.

The backlit display is a convenient feature for working in dimly lit environments, and the detachable leads with alligator probe tips enhance safety and ease of use during testing. The Fieldpiece SC440 is a strong contender for HVAC professionals looking for a reliable, accurate, and durable multimeter.

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.