Klein Tools CL445 HVAC Clamp Meter and Magnetic Hanger - True RMS

Our review of the Klein Tools CL445 HVAC Clamp Meter and Klein Tools 69417 Rare-Earth Magnetic Hanger finds this kit aimed at HVAC technicians and electricians who need a rugged, all-in-one field tool. The biggest reason to buy is its combination of an automatic True RMS clamp meter with broad temperature range and a strong magnetic hanger, which simplifies single-handed measurements and long troubleshooting sessions. For pros who need reliable AC current readings, temperature probes and hands-free mounting, this combo removes the constant juggling of leads and tools while on a job site.

Key Features

• True RMS clamp: Measures up to 600A AC for accurate current readings on non-sinusoidal loads common in HVAC and motor drives.
• Wide voltage range: Reads up to 750V AC and 600V DC so it covers most building and industrial electrical circuits safely.
• Temperature capability: K-Type thermocouple port measures from -148F to 1832F, letting technicians verify temperatures from refrigeration coils to high-heat components.
• Versatile test leads: Include functions for micro amp, frequency, capacitance and diode tests so the meter serves multiple diagnostic roles beyond basic voltage and current.
• Non-contact voltage detection: Integrated in the clamp jaw to help identify live conductors quickly without changing tools.
• Dual display: Backlit LCD shows voltage and current simultaneously for faster, clearer comparisons when diagnosing systems.

Who It's For

This kit is best for HVAC technicians, field electricians and maintenance professionals who value a durable, multi-function meter with temperature measurement and hands-free mounting. The inclusion of the rare-earth magnetic hanger makes extended measurements, belt-hook work and single-person testing simpler and safer.

Less experienced hobbyists may find some functions more than needed, and users who require true laboratory-grade precision or specialized insulation testing should look for dedicated instruments; however, for everyday trade work the CL445 covers the typical diagnostic needs well.

Pros & Cons

Pros

• Comprehensive measurement range that covers current, voltage, resistance, continuity and more for on-site troubleshooting.
• Temperature input with a wide span lets technicians check both extreme cold and high-temperature components.
• Integrated non-contact voltage detection and dual display speed up common diagnostic tasks.
• Magnetic hanger provides stable, hands-free placement during longer tests or multi-step procedures.

Cons

• The meter is feature-rich for field use but may be heavier or bulkier than a minimalist clamp meter for pocket carry.
• Users needing ultraprecise lab measurements should pair this with calibration-grade equipment.

Specifications

Product	CL445 HVAC Clamp Meter with 69417 Magnetic Hanger
AC Current	600A
Voltage	750V AC / 600V DC
Temperature Range	-148F to 1832F (-100C to 1000C)
Functions	Resistance, continuity, frequency, capacitance, micro amp, diode tests
Special Features	Automatic True RMS, non-contact voltage detection, dual voltage + current display

Our Verdict

The CL445 HVAC Clamp Meter paired with the 69417 rare-earth magnetic hanger is an excellent value for tradespeople who need a rugged, multi-function tool that reduces the need to swap instruments on-site. Its True RMS measurements, wide temperature range and hands-free hanger make it a practical workhorse for HVAC and electrical diagnostics.

Frequently Asked Questions

Can the meter read temperature directly?
The meter accepts a K-Type thermocouple and measures temperatures from -148F to 1832F.

Does it detect live wires without contact?
Yes; the clamp jaw has an integrated non-contact voltage detection feature for quick identification of live conductors.

Is the magnetic hanger strong enough for hands-free use?
Yes; the included Klein Tools 69417 rare-earth magnetic hanger is designed for stable, hands-free mounting during measurements.