Technical - Articles - Page 2

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6 Essential Steps for Teaching CO₂ Refrigeration

A practical guide to instructing technicians about this low-GWP refrigerant

October 6, 2024

CO₂ refrigeration systems demand both classroom knowledge and hands-on experience, which is why blending theory with practice creates top-notch technicians.

H2VAC: Using Hydrogen Fuel to Decarbonize Heating and Cooling

Powering electric heating and cooling equipment using hydrogen fuel cells can reduce reliance on fossil fuels – and strain on the electric grid.

Yussef Abou-Ghanem

September 28, 2024

Discover how hydrogen fuel is poised to revolutionize HVAC systems by reducing carbon emissions and easing strain on electric grids, driving the industry toward a decarbonized future.

10 Things to Know Before Your First Mini-Split Call

Lianna Schwalenberg

August 21, 2024

The first time a technician has to tackle a ductless mini-split can be nerve-racking, but by following these 10 tips, the job can be done without all the anxiety.

How a Fan Center Works

Understanding the basics key to troubleshooting older furnaces

Lianna Schwalenberg

July 13, 2024

For technicians who run across older furnaces where air conditioners were later added, it pays to know how a fan center operates.

Nationwide 250 hp Boiler Achieves 5 ppm NOx Performance

July 26, 2023

Equipped with an Oilon LN30 ultra-low NOx burner and Nationwide’s Eagle PLC-based Control System, the 250 hp package boiler achieved average emissions performance of 5 ppm NOx and 0 ppm CO (corrected to 3% O₂) during third-party testing.

Defining and Calculating Voltage Imbalance

Improper voltage is the one of the greatest causes of failed compressors in three-phase units

Paul Flora

June 28, 2023

Saving one compressor will cover the cost of a voltage monitor and then some.

Harlan is New Business Development Manager at WAGO

June 6, 2023

Amy Harlan, who has an extensive background in electronics and device connectivity, is the new business development manager for device connection technology at the global electronics technology firm.

Public Review of Proposed Revisions to ACCA Manual SPS (HVAC Design for Swimming Pools and Spas)

April 26, 2023

The 30-day ANSI public review period closes May 14.

The 3-4-5 Rule for Walk-In Coolers And Freezers

The box must remain square or else the panels will not fit together

Joe Marchese

November 29, 2021

During the installation of a new walk-in cooler or freezer, it is imperative the box remain square and level during the assembly of its panels.

Refrigeration and air conditioning compressors.

How to Measure Net Oil Pressure

Many larger refrigeration and air conditioning systems have oil pumps

John Tomczyk

November 24, 2021

Before servicing any refrigeration or air conditioning systems that contain an oil pump, technicians should make sure they understand the difference between net oil pressure and oil pump discharge pressure.