---
product_id: 45760131
title: "JL3KR4 HVACR Charge Kit"
brand: "fieldpiece"
price: "£503.62"
currency: GBP
in_stock: true
reviews_count: 10
category: "Fieldpiece"
url: https://www.desertcart.co.uk/products/45760131-jl3kr4-hvacr-charge-kit
store_origin: GB
region: United Kingdom
---

# Direct mobile app sync 350’ wireless range Stabilizes in <5 seconds JL3KR4 HVACR Charge Kit

**Brand:** fieldpiece
**Price:** £503.62
**Availability:** ✅ In Stock

## Summary

> 📡 Charge ahead with precision—your HVAC toolkit just got a major upgrade!

## Quick Answers

- **What is this?** JL3KR4 HVACR Charge Kit by fieldpiece
- **How much does it cost?** £503.62 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/45760131-jl3kr4-hvacr-charge-kit)

## Best For

- fieldpiece enthusiasts

## Why This Product

- Trusted fieldpiece brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Elevate Your HVAC Game:** Accurate at any elevation, ensuring reliable results no matter the job site conditions.
- • **Hands-Free Testing Mastery:** Long flexible probe with sliding magnet lets you test with ease and precision, freeing your hands for multitasking.
- • **Instant Precision Readings:** Achieve +/-1° accuracy in under 5 seconds for flawless diagnostics.
- • **Unmatched Wireless Freedom:** Stay connected up to 350 feet away—no more tethered readings.
- • **Seamless Mobile Integration:** Transmit live data directly to your phone via the Job Link app—work smarter, not harder.

## Overview

The Fieldpiece JL3KR4 HVACR Charge Kit revolutionizes HVAC diagnostics with a powerful 350-foot wireless signal, rapid stabilization under 5 seconds, and +/-1° accuracy. Its long flexible probe with a sliding magnet enables hands-free, precise testing, while seamless integration with the Job Link mobile app delivers real-time data anywhere on the job site. Designed for professionals demanding efficiency, accuracy, and convenience, this kit minimizes refrigerant loss and maximizes productivity.

## Description

The new Job link probes have a powerful wireless signal range of 350’ and transmit through walk-ins. Hvacr professionals can quickly and easily view live readings and reports in the job link app from anywhere on the job site.

Review: From rookie to pro in one tool upgrade - This is a game changer for HVAC work. No more refrigerant losses when taking readings. No more trying to read the gage to get it roughly accurate. No more struggles to get reliable temp reading. Ability to readout values from a distance on an easy to read app. This pays for itself in time saved, refrigerant losses, accuracy and "Tool Pride"! Costs a lot but well worth it. My only negative is the apps available limit their features unless you subscribe to a service and I hate subscription scams. Still the basic free app that comes with is adequate for a hobbyist or part time HVAC guy and your company will buy the subscription if you work for a legit company.
Review: A great tool - It connects directly to the air conditioning system's service port, minimizing the need for connecting hoses and excessive fittings, thereby reducing refrigerant leakage to a minimum. Furthermore, real-time measurement data can be read directly via a mobile app. This is an incredibly professional and efficient tool for HVAC contractors—it's fantastic!

## Features

- Accurate at any elevation, directly transmits to mobile devices using job link app
- Up to 350’ wireless signal
- Stabilizes in under 5 seconds with +/-1° accuracy
- Long flexible probe with sliding magnet for easy and precise hands-free testing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0743SVJ9X |
| Best Sellers Rank | #52,191 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #66 in Multi Testers |
| Brand | Fieldpiece |
| Brand Name | Fieldpiece |
| Color | Yellow |
| Compatible Devices | Mobile devices with 'job link app', Bluetooth-enabled devices |
| Customer Reviews | 4.7 out of 5 stars 520 Reviews |
| Global Trade Identification Number | 00872641003395 |
| Included Components | Job Link™ Charge Kit |
| Item Dimensions | 10 x 4 x 7 inches |
| Item Type Name | HVACR Charge Kit |
| Item dimensions L x W x H | 10 x 4 x 7 inches |
| Manufacturer | Fieldpiece |
| Measurement Type | Pressure, Temperature |
| Model | JL3KR4 |
| Part Number | JL3KR4 |
| Power Source | Battery Powered |
| Style | Handheld |
| Style Name | Handheld |
| UPC | 872641003395 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Fieldpiece
- **Color:** Yellow
- **Item dimensions L x W x H:** 10 x 4 x 7 inches
- **Power Source:** Battery Powered
- **Style:** Handheld

## Images

![JL3KR4 HVACR Charge Kit - Image 1](https://m.media-amazon.com/images/I/71htn4QNKjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ From rookie to pro in one tool upgrade
*by C***T on January 9, 2024*

This is a game changer for HVAC work. No more refrigerant losses when taking readings. No more trying to read the gage to get it roughly accurate. No more struggles to get reliable temp reading. Ability to readout values from a distance on an easy to read app. This pays for itself in time saved, refrigerant losses, accuracy and "Tool Pride"! Costs a lot but well worth it. My only negative is the apps available limit their features unless you subscribe to a service and I hate subscription scams. Still the basic free app that comes with is adequate for a hobbyist or part time HVAC guy and your company will buy the subscription if you work for a legit company.

### ⭐⭐⭐⭐⭐ A great tool
*by E***N on April 4, 2026*

It connects directly to the air conditioning system's service port, minimizing the need for connecting hoses and excessive fittings, thereby reducing refrigerant leakage to a minimum. Furthermore, real-time measurement data can be read directly via a mobile app. This is an incredibly professional and efficient tool for HVAC contractors—it's fantastic!

### ⭐⭐⭐⭐⭐ Must have for HVAC techs
*by D***. on March 14, 2026*

As described and very useful. Another great product from Fieldpiece.

## Frequently Bought Together

- Fieldpiece JL3KR4 HVACR Charge Kit
- Appion CTEE14 - MegaSeal Low-Loss Charging T-Fitting 1/4in FL
- Fieldpiece MG44 - Wireless Vacuum Gauge

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**Shop now:** [https://www.desertcart.co.uk/products/45760131-jl3kr4-hvacr-charge-kit](https://www.desertcart.co.uk/products/45760131-jl3kr4-hvacr-charge-kit)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-07-01*