HVAC Test Instruments

The heated‑diode refrigerant and combustible gas leak detector quickly and accurately identifies A3, A2L, A1 refrigerants and common combustible gases, with high/medium/low sensitivity settings and auto/manual zeroing for precise field use. Its replaceable sensor and long‑life batteries keep it job‑ready, while Job Link® System App connectivity helps technicians locate leaks faster with one lightweight, versatile tool. 

Retail $1,032.00 ea

The AccuProbe UV Leak Detector delivers ultra‑sensitive detection of R‑134a, R‑404A, R‑407C, R‑410A, 1234yf and other refrigerants using long‑life solid‑electrolyte sensor technology. With selectable sensitivity levels, UV dye illumination, audible/visual alarms, and the SmartAlarm™ digital leak‑size indicator, it gives technicians fast, accurate leak confirmation without guesswork. 

Retail $975.00 ea

A compact dual‑mode thermometer designed for fast system checks, the Fluke SPK3 combines a folding in‑duct ROD probe with an 8:1 IR sensor for quick ambient and register readings. Its hands‑free hook, backlit display, and automatic T1–T2 calculation make it an efficient tool for assessing HVAC performance in the field.  

Retail $153.00 ea

The CAT45K2 delivers accurate O₂, CO, CO₂, and draft pressure measurements with a rugged design and a four‑year sensor warranty for lower cost of ownership. Its high‑contrast 5.5” touchscreen provides clear visibility in any environment, while patent‑pending SensorVault™ technology extends sensor life. Field‑replaceable sensors maximize uptime, and Job Link® System App connectivity offers an industry‑leading 1000’ wireless range. Ideal for advanced diagnostics, the CAT45K2 supports live trend reporting and includes dedicated fields for customer data. 

Retail $1,940.00 ea

The CAT45 combustion analyzer delivers accurate O₂, CO, CO₂, and draft pressure measurements with a built‑in manometer, eliminating the need to carry extra tools. Its 5.5” touchscreen, field‑replaceable sensors, and four‑year sensor warranty reduce downtime and ownership costs, while SensorVault™ and HydroCycle™ technologies extend sensor life and automatically manage condensate. With live draft pressure during analysis and Job Link® System App connectivity up to 1000’, it’s built for fast, reliable diagnostics in demanding HVAC/R environments. 

Retail $3,000.00 ea

The SCM4 Carbon Monoxide Detector delivers fast, accurate CO measurements from 0–1000 ppm using a quick‑response electrochemical sensor ideal for walk‑around testing. It features a field‑replaceable CO sensor, one‑button ambient ZERO calibration, audio/visual alarms with mute, and a bright backlit dual display with MAX and real‑time readings. A magnetic hanger supports hands‑free operation, and Auto Power‑Off preserves battery life during field use.  

Retail $455.00 ea

This easy‑to‑use CO meter provides fast, accurate carbon monoxide measurements from 0–1000 ppm, with low‑ and high‑level alarms for added user protection. It features a backlit display showing CO levels and temperature, audible/visual alerts, and auto‑power off to conserve battery life. Portable and field‑ready with a carrying pouch and batteries included, this meter is ideal for diagnostic checks — but is not intended for use as personal protective equipment. 

Retail $204.00 ea

The YELLOW JACKET® CA502/CA502P is a compact 3‑in‑1 combustion analyzer, ambient CO monitor, and manometer designed for fast, accurate heating‑appliance diagnostics. It displays six simultaneous readings, features field‑replaceable pre‑calibrated O₂ sensors, and includes CO over‑limit protection for extended sensor life. A magnetic holster, 7” adjustable-depth probe, inline condensate trap with replaceable filter, and integrated zeroing make it job‑ready for any site. With optional wireless printing and the YJ Combustion App, it delivers safe, efficient, and streamlined combustion analysis in a lightweight, technician‑friendly package.  

Retail $1,525 ea