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ARTICLES

HVAC Q&A Episode 9: Tools for Working With A2Ls

April 24, 2025

Tool manufacturers explain the broad categories of tools that might need an update to comply with new A2L refrigerant systems: leak detectors, manifolds, vacuum pumps, recovery machines, and gauges that can sense R-454B.

Refrigeration Manifold Gauges: Digital vs. Mechanical

There are advantages and disadvantages to each type of gauge

Joe Marchese

March 21, 2023

Technicians have the choice of using either a digital or mechanical manifold gauge. Each one has its benefits and disadvantages, which is why it may pay to own one of each kind.

How to Explain Odor from Gas Furnace

April 1, 2022

Any furnace with induced draft combustion may occasionally exhibit unburned gas odor near the furnace in the off cycle.

Fieldpiece Instruments Inc.: Refrigerant Manifold

March 1, 2019

The two models of this product are designed to check, evacuate, and charge systems. The manifolds are optimized for live readings and receive direct long-range — up to 350 feet — wireless measurements from the Fieldpiece Job Link Probes and SRS3 Wireless Scale with no transmitter required.

Yellow Jacket's P51-860 Titan Digital Manifold. The ACHR News

Yellow Jacket Celebrates 70 Years in HVACR

AHR attendees wowed by the company's progress

Angela D. Harris

February 18, 2019

It was a celebration for Yellow Jacket as the company kicked off its 70th anniversary. In a square booth with a large, lit banner, attendees were invited to explore what the company had produced from 1949 to 2019.

Fieldpiece Puts Techs in the Driver’s Seat With Customizable HVACR Tools

New products compatible with Job Link app

Amy Al-Katib

February 18, 2019

The Fieldpiece booth commanded a lot of attention on the show floor at this year’s AHR Expo in Atlanta. Those who didn’t have time to wait in line to find out why may be wondering, “What was all the rage about?”

MrPEX Systems: Composite Manifold

May 21, 2018

The MrPEX Composite Radiant Manifold is made from a durable high performance glass filled plastic designed to withstand high temperature and pressure. The manifold exceeds the oxygen diffusion standard DIN 4726 and is corrosion resistant.

Yellow Jacket’s Booth Buzzed with Excitement and Innovation

Amy Al-Katib

February 26, 2018

Just like bees return to the hive every day for sunset, Yellow Jacket has habitually returned to the AHR Expo every January for the past 45 years.

Uniweld Products Inc.: Digital Manifold

February 12, 2018

Equipped with sensors that output accurate pressure and temperature readings, this digital manifold has a 3/8-inch center port, easy grip handles, double o-ring piston valves, and easy-access front hose holders.

Navien Inc.: Manifold Kits

September 4, 2017

Available in configurations of two, three, and four units side-by-side — and two and four units back-to-back — Navien’s Ready-Link Manifold Kits are designed to save contractors time on multi-unit NPE Tankless Water Heater installations.