An AC-only clamp covers household and commercial wiring, appliances and HVAC equipment, and costs less than an AC/DC model with the same features. Look for true RMS if you work on anything with electronics, and for DC microamps and temperature if you service furnaces. Choose an AC/DC clamp instead for solar, battery or vehicle work.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Full ranking 8
- Klein Tools CL445#1 of 8Full review
An HVAC clamp with inrush, flame-sensor microamps and a CAT IV rating at a mid-range price.
Amazon $94.85$94.85600 ANoCAT IV 600 V / CAT III 750 V - Fluke 902 FC#2 of 8Full review
An HVAC technician’s clamp from Fluke with flame-rod microamps, temperature and a phone app.
Amazon $329.97$329.97600 ANoCAT IV 300 V / CAT III 600 V - Klein Tools CL220#3 of 8Full review
A low-cost true-RMS AC clamp for home and light electrical work, with temperature for basic HVAC checks.
Amazon $69.97$69.97400 ANoCAT III 600 V - Extech MA440#4 of 8Full review
A plain true-RMS AC clamp for electricians and technicians who only need current, voltage and resistance.
Amazon $66.99$66.99400 ANoCAT III 600 V - Fluke 323#5 of 8Full review
A simple, well-built true-RMS AC clamp for electricians who want a Fluke for everyday panel and circuit checks.
Amazon $152.85$152.85400 ANoCAT IV 300 V / CAT III 600 V - Fluke 302+#6 of 8Full review
A basic AC clamp for occasional current checks on plain resistive and motor loads, at an entry price.
Amazon $88$88400 ANoCAT IV 300 V / CAT III 600 V - Klein Tools CL120#7 of 8Full review
An inexpensive AC clamp for homeowners and apprentices who need occasional current and voltage checks.
Amazon $63.89$63.89400 ANoCAT III 600 V - Southwire 21510N#8 of 8Full review
A basic AC clamp for household circuits, with the fewest published specs in this list.
Amazon $65.81$65.81400 ANoCAT III 600 V
