10 Best Moisture Meters 2025 in the United States

The Wagner Meters Rapid RH L6 Smart Sensors are designed primarily for measuring concrete moisture using the ASTM F2170 standard. This product consists of 50 refill sensors meant to be used with the Rapid RH L6 Starter Kit (sold separately), making it a good choice for contractors or professionals who frequently test concrete moisture over large areas. The sensors measure relative humidity deep within concrete slabs, which is important for accurate moisture assessment before flooring installation. These sensors offer improved responsiveness, especially in high humidity conditions, and support both Fahrenheit and Celsius readings for flexibility. They feature integrated data storage, which helps keep track of test results without extra effort.

One of the key benefits is the straightforward and cost-effective testing process, simplifying what is usually a complicated procedure. The package includes useful accessories like extensions, protective caps, stainless steel covers, and a calibration certificate, pointing to thoughtful build quality and attention to durability. The sensors do not require batteries, reducing maintenance concerns.

Since these are refill sensors, you must already have the Rapid RH L6 Reader device, which is sold separately, so this product alone won’t work out of the box. Its measurement range and accuracy are excellent for concrete moisture testing but not suited for general-purpose moisture measurement in wood or other materials. These sensors focus on relative humidity inside concrete rather than surface moisture, making them ideal for a specific niche. For professionals requiring reliable and standardized concrete moisture testing with minimal hassle and accurate deep readings, this sensor pack is a practical and durable choice, while other meters might be better suited for casual or multi-material moisture measuring.

The FLIR MR160 Thermal Imaging Moisture Meter offers a blend of unique features and solid performance that could be beneficial for professionals in construction, inspection, and similar fields. One of its standout features is the Infrared Guided Measurement (IGM) technology, allowing users to visually identify moisture issues through thermal imaging. This is particularly useful for quickly locating problem areas without making contact. The device supports both pin and pinless measurement methods, providing versatility for different types of materials and situations.

With a measurement accuracy of +/- 0.5%, it ensures reliable readings, and the 320 x 240 pixel 2.3-inch color display enhances readability and ease of use. The small, portable design makes it convenient to carry and use in various settings. Additionally, the FLIR MR160 is built to be durable and includes an internal rechargeable battery with USB charging, adding to its user-friendliness. The included FLIR Tools software allows for documenting and generating reports, which can be a significant advantage for professional use.

Potential drawbacks include its relatively higher price point and possibly more complex operation for beginners. It may require some time to fully utilize all features efficiently. Its weight and size, although portable, could still be a consideration for those looking for extremely compact tools. In conclusion, the FLIR MR160 is a robust and feature-rich moisture meter, particularly suited for professionals who require detailed and accurate moisture analysis combined with thermal imaging capabilities.

The Protimeter BLD9800-C MMS3 is a versatile moisture meter designed to measure moisture in a wide range of building materials including wood, drywall, concrete, plaster, and masonry. It offers two useful measurement modes: pin mode for precise moisture readings by inserting probes into materials, and a non-invasive search mode allowing you to detect moisture hidden behind surfaces like tiles and vinyl floors without damage. This makes it practical for both damage assessment and monitoring drying progress.

The device also includes a hygrometry function to measure humidity, helping to identify ventilation issues that could affect indoor air quality. The meter comes with helpful accessories such as a heavy-duty probe, calibration check device, and software, all packed in a sturdy hard case, which speaks to its durability and suitability for professional use. The meter runs on two AA batteries, which are included, making it ready to use out of the box.

Weighing 6.6 pounds with its case, it’s portable but might feel a bit heavy for extended handheld use. This moisture meter is ideal for contractors, home inspectors, and serious DIYers who need a comprehensive, robust tool for diagnosing moisture problems in various building materials. Beginners might find some features complex, but the included instructions and software support can help ease the learning curve.