10 Best Ac Tools Volt Meters For Hvac of 2025

Tested and Reviewed: Top 10 Ac Tools Volt Meters For Hvac deals with expert ratings from 8.1 to a perfect 10

July 2025 Edition

Editor's Choice

9.7

Save 14%

AstroAI

AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, Blue

14% OffFree Shipping

Editor's bottom line:

“This ac tools volt meters for hvac is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Versatile Digital Clamp Meter: Accurately measures AC Current (DO NOT MEASURE DC CURRENT)! AC/DC Voltage, Capacitance, Resistance, Diode Continuity and Live Wire Tests. This clamp meter is a really useful tool for solving industrial and household electrical issues
Large Jaw Opening: The jaw opening measures AC current in a conductor without touching or interrupting the circuit. Its slim and compact size makes it easy to operate in narrow spaces
Thoughtful Design: Support Data Hold, Max/Min, Auto Shut-off, low battery indicator and continuity buzzer. Includes Convenient features like Audial and Visual Alarm, LCD Backlit Screen and Flashlight make it easy to use. Two 1.5V AAA batteries are included in the package
Non-contact Voltage Testing: This Clamp Meter features non-contact voltage testing with sound and light alarm. When the Meter senses a weak AC signal, the green indicator light will come on and the buzzer will emit a slow, audible beep. when the Meter senses a strong AC signal, the red indicator light will come on and the buzzer will emit a quick beep
Additional Tips: The clamp meter has passed the environmental pollution degree 2 and overvoltage category III 600V safety standards.

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Picked by 166 people today

9.5

Klein Tools

Klein Tools CL120 Digital Clamp Meter, Auto-Ranging 400 Amp AC, AC/DC Voltage, Resistance, Continuity, Non-Contact Voltage Tester Detection

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Main Highlights

VERSITILE CLAMP METER: Measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads
NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
ACCURATE MEASUREMENTS: Auto-ranging technology selects the appropriate measurement range for accurate results
CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
ADDITIONAL FEATURES: Max, Data Hold capability for enhanced functionality and auto-power off after 10 minutes to conserve battery life
COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, instructions, and 3 x AAA batteries

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9.5

Klein Tools

Klein Tools CL220 Digital Clamp Meter, Auto-Ranging 400 Amp AC, AC/DC Voltage, TRMS, Resistance, Continuity, NCVT Detection, and Temp

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Main Highlights

VERSATILE CLAMP METER: Measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads; temperature via thermocouple
NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
ADDITIONAL FEATURES: Max, Data Hold capability for enhanced functionality and auto-power off after 10 minutes to conserve battery life
COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries

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9.2

UNI-T

UNI-T UT210e Digital Clamp Meter AC DC Amp Meter Clamp Multimeter True RMS 2000 Counts Voltmeter Continuity Tester Capacitor HVAC Tool Multi Tester

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Main Highlights

UT210E mini clamp meter. An auto ranging clamp meter of great value by Uni-Trend. Versatile electric meters tester that diagnoses automotive, HVAC-R, repairing, troubleshooting industrial and household electrical issues. All in one
Authentic UNI-T amp clamp multimeter. Works as AC current meter and DC amp clamp meter and measures: 2.000 A (resolution: 1 mA), 20.00 A (resolution: 10 mA), 100.00 A (resolution: 100 mA)
A compact voltage tester measuring AC DC volt. DC voltage measurement range: 200.0 mV (resolution: 0.1 mV), 2.000 V (resolution: 1mV), 20.00 V (resolution: 10mV), 200.0 V (resolution: 100 mV), 600 V (resolution: 1 V)
A reliable digital voltmeter with AC voltage measurement range: 2.000 V (resolution: 1mV), 20.00 V (resolution: 10 mV), 200.0 V (resolution: 100 mV), 600 V (resolution: 1 V)
2,000 Counts & True RMS - Accurate AC/DC Voltage and Current Measurement. Unique feature - V.F.C. Variable Frequency Voltage/Current Measurement - Reduce Signal Disturbance for Precise Results. Long press "SELECT/V.F.C" button to enter VFC mode. One of the best hvac tools and equipment
Also works as: continuity tester with buzzer alarm, capacitance meter, ohmmeter. TRMS is used to determine the power dissipated in a resistor. Measures the "heating" potential of an applied voltage
Designed with safety in mind. Safety Rated CAT II 600 V, CAT III 300 V - Built-in Overload Protection for Safe Use. Nonslip rubber grip and easy to carry. Built to last
Compact & Portable Design - Pocket-sized with Easy Grip, Perfect for Electricians and HVAC Professionals
Easy access to UNI-T 7/24 1 to 1 user support. If you encounter any problems during use, please contact us first (via e-mail) and our customer service team will deal with your problem as soon as it is received
UNI-T value pack includes: 1 x UT210E clamp meter, 1 pair of test leads, 2 AAA batteries, 1 x paper manual (En), 1 x eManual (En), 1 x zip bag/black, 1 packaging box

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9.0

Save 16%

Klein Tools

Klein Tools CL120VP Electrical Voltage Test Kit with Clamp Meter, Three Testers, Test Leads, Pouch and Batteries

16% Off

Main Highlights

VERSATILE CLAMP METER: CL120 measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads
ACCURATE MEASUREMENTS: Auto-ranging technology selects the appropriate measurement range for accurate results
CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
GFCI RECEPTACLE TESTER: Cat. No. RT210 detects common wiring issues in standard and GFCI receptacles, including open ground, reverse polarity, and more
NON-CONTACT VOLTAGE DETECTOR: Cat. No. NCVT3P features dual-range capabilities to detect a wide range of AC voltages for various applications
BRIGHT FLASHLIGHT: Illuminate the work area with a built-in flashlight, independent of voltage detection
VOLTAGE TESTER: Cat. No. ET40 tests both AC and DC voltages at multiple levels for comprehensive electrical testing

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8.8

UEi Test Instruments

UEi DL369 Digital Clamp Meter HVAC Auto-Ranging 4000 Counts Volt Meter AC Amp Meter Measures AC Current AC/DC Voltage & Microamps Capacitance Resistance Diodes NCV Continuity Tester Live Wire Test

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Main Highlights

DUAL DISPLAY: The DL369 comes with a Dual 4000 Count Display to show all numbers clearly and easily while testing. There also is a Min/Max and auto ranging functions, Auto power off to conserve battery life, and test lead holders for easy transportation.
CAPACITANCE & FREQUENCY: The DL369 measures both capacitance 4000µF & frequency providing industrial capabilities as an affordable price. This Clamp meter also measures Duty Cycle, Diode Testing, Continuity, and Resistance to 40M.
AC/DC Microamps: The DL369 measures AC current up to 400A and AC/DC Current up to 2000µA providing you a wide testing range and reducing the need for additional tools on the jobsite.
NCV: The DL369 has audible Non-Contact Voltage to be able to identify live lines and protect you on the jobsite. This volt meter provides increased safety with 600V CAT III & 1000V CATII safety ratings.
3-YEAR WARRANTY: The DL369 has a 3-year limited warranty. All warranties must be redeemed in the US.

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8.6

Save 9%

Klein Tools

Klein Tools CL445 HVAC Clamp Meter, Auto-Ranging TRMS, NCVT, Measures Voltage, Current, Temperature, Micro Amps, InRush and More

9% OffFree Shipping

Main Highlights

VERSITILE HVAC CLAMP METER: Measures AC current, inrush and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, DC microamps, diode test and capacitance via test-leads; temperature via thermocouple
NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
DUAL VOLTAGE + CURRENT DISPLAY: Backlit LCD shows voltage and current simultaneously for easy readings in any lighting condition
ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
ADDITIONAL FEATURES: Max/Min, Inrush, Data Hold capability for enhanced functionality and auto-power off to conserve battery life
COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, alligator clips, K-Type thermocouple, instructions, and 3 x AAA batteries

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8.3

Klein Tools

Klein Tools CL320KIT HVAC Kit for HVAC Testing; Digital Clamp Meter, Non-Contact Voltage Tester, and Infrared/Probe Thermometer

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Main Highlights

HVAC PROFESSIONAL KIT: Includes HVAC Digital Clamp Meter, Dual IR/Probe Thermometer, and Dual Range Non-Contact Voltage Tester with Flashlight
VERSATILE CLAMP METER: CL320 measures AC current and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, DC microamps, diode test and capacitance via test-leads; temperature via thermocouple
TEMPERATURE MEASUREMENT: Dual IR Probe and Thermometer (Cat. No. IR07) measures temperature from -40 to 572°F (-40 to 300°C) with infrared thermometer and includes a temperature probe for air vents and ducts
DIFFERENTIAL TEMPERATURE: Calculate differential temperature (T1-T2) using both IR and probe temperatures, with a hands-free hanging hook for the temperature probe
VERSATILE VOLTAGE DETECTION: Dual-range Non-Contact Voltage Tester (Cat. No. NCVT3P) detects voltage from 12 to 1000V AC or 70 to 1000V AC with visual and audible indicators
BRIGHT FLASHLIGHT: Integrated flashlight illuminates the work area and can be used independently of the voltage detection function
NOTE ON USAGE: IR07 Thermometer is not intended for medical or animal use, and it is designed for professional HVAC applications

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Best Value

8.1

Save 33%

Klein Tools

Klein Tools CL800 Digital Clamp Meter, Auto Ranging TRMS, AC/DC Volt/Current, LoZ, Continuity, Frequency, Capacitance, NCVT, Temp, More 1000V

33% OffFree Shipping

Main Highlights

VERSATILE TOUGH CLAMP METER: Measures AC/DC current and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, diode test and capacitance via test-leads; temperature via thermocouple
LOW IMPEDANCE MODE: LoZ mode for identifying and eliminating ghost or stray voltages
BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
CONVENIENT FEATURES: Integrated worklight; test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
ENHANCED DURABILITY: IP40 ingress protection and 6.6 ft. (2 m) drop protection to meet jobsite demands
COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 2 x AAA batteries

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8.1

UEi Test Instruments

UEi DL379B Digital Clamp Meter Auto Ranging, HVAC Current Voltage Tester w/Magnetic Mount, Measures AC Amps AC/DC Volts Temperature Capacitance Frequency Diodes Duty Cycle Continuity Resistance NCV

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Main Highlights

INDUSTRIAL GRADE: The DL379B is a commercial grade clamp meter with enhanced capabilities for every industrial setting. Our clamp meter measures AC Amps, AC/DC Volts, AC Microamps 2000µA, Capacitance 2000µF, Frequency, Duty Cycle, Diode Testing, Temperature, Continuity, and Resistance 40M.
ENHANCED SAFETY: The DL379B provides increased safety with a CAT IV 300V & CAT III 600V safety rating. This clamp meter includes Non-Contact Voltage to identify live lines. There are input jack locks to protect your meter from blowing a fuse.
GREAT DESIGN: Our clamp meter includes and easy to read backlit dual display with a magnetic mount for handsfree operation. The unit also has a work light to illuminate dark areas and test lead storage for easy transport. Other features include Min/Max, auto power off to conserve battery, and a Low Battery Indicator.
COMPLETE KIT: Also included with your clamp meter are test leads, K-Type temperature probe, 2 AAA batteries, and a zippered pouch for easy transportation.
WARRANTY: The DL379B has a 3-year limited warranty. All warranties must be redeemed in the US.

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Our Best Overall Choice

Best Choice

9.7

AstroAI

AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, Blue

14% OffFree Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Versatile Digital Clamp Meter: Accurately measures AC Current (DO NOT MEASURE DC CURRENT)! AC/DC Voltage, Capacitance, Resistance, Diode Continuity and Live Wire Tests. This clamp meter is a really useful tool for solving industrial and household electrical issues
Large Jaw Opening: The jaw opening measures AC current in a conductor without touching or interrupting the circuit. Its slim and compact size makes it easy to operate in narrow spaces
Thoughtful Design: Support Data Hold, Max/Min, Auto Shut-off, low battery indicator and continuity buzzer. Includes Convenient features like Audial and Visual Alarm, LCD Backlit Screen and Flashlight make it easy to use. Two 1.5V AAA batteries are included in the package
Non-contact Voltage Testing: This Clamp Meter features non-contact voltage testing with sound and light alarm. When the Meter senses a weak AC signal, the green indicator light will come on and the buzzer will emit a slow, audible beep. when the Meter senses a strong AC signal, the red indicator light will come on and the buzzer will emit a quick beep
Additional Tips: The clamp meter has passed the environmental pollution degree 2 and overvoltage category III 600V safety standards.

Show Price

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