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Home » Topics » Topics » Refrigeration

Refrigeration
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Marchese Compressor Photo

Selecting the Right Stub Connection for Replacement Compressors

Matching stub connections makes installs easier, while the wrong choice can add delays
Joe Marchese
November 4, 2025

Choosing the wrong stub connection can delay a compressor install — learn the differences and why matching them saves time, money, and frustration.


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Heatcraft Refrigeration Technician 1170x658

Comparing CO₂ Refrigeration Architectures

The pros and cons of cascade, booster, and secondary loop systems
Don Fort
Don Fort
November 4, 2025

CO₂ refrigeration is growing fast, but there are pros and cons for cascade, booster, and secondary loop systems. Discover which system  works best in different climates and for different applications.


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Mitsubishi Unit 1170x658

EPA Hears Industry Feedback on Proposed Refrigerant Rule Revisions

Joanna Turpin
Joanna R. Turpin
November 3, 2025

EPA’s proposed refrigerant rule revisions would extend compliance deadlines and raise GWP limits. Industry groups are divided between supporting flexibility and warning of confusion and delayed transitions.


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Opteon Chemours Refrigerant Chemours

EPA’s Latest SNAP Rule Expands Refrigerant Options

Rule 27 proposes new lower-GWP refrigerants for HVACR equipment
The ACHR NEWS Editorial Staff
November 1, 2025

The proposed Significant New Alternatives Policy Rule 27 would list several lower-GWP substitute refrigerants as acceptable, subject to use conditions, for residential and light commercial air conditioners and heat pumps, chillers, household refrigerators and freezers, motor vehicle air conditioners, and fire suppression and explosion protection.



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HVAC Talkback: The R-410A Delay Debate

The ACHR NEWS Editorial Staff
October 28, 2025

Here’s what HVAC contractors and techs had to say on social media in our latest HVAC Talkback regarding the extension of the R-410A deadline.


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Refrigerant Shortages Prompt EPA to Revisit HFC Rules: An HVAC Minute Video Update - October 28, 2025

Refrigerant Shortages Prompt EPA to Revisit HFC Rules

An HVAC Minute Video Update: October 28, 2025
Hannah Belloli
Hannah Belloli-Oster
October 28, 2025
The EPA is proposing to delay HFC phaseout deadlines to ease refrigerant shortages and supply chain challenges.
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METUS-Commercial-Refrigerant-Byline-Image.jpg
FROSTlines

Preparing for the VRF Refrigerant Transition

Starting next year, new VRF systems must use lower-GWP A2L refrigerants
David_Archer Headshot.jpg
David Archer
October 22, 2025

Starting next year, R-410A VRF systems will be phased out as new equipment transitions to low-GWP refrigerants. Contractors will play a vital role in helping end users understand their options.


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Joanna's Point of View
FROSTlines

Refrigerant Roulette: Contractors Brace For More Change

As the R-454B shortage subsides, another transition is already being planned
Joanna Turpin
Joanna R. Turpin
October 21, 2025

Another refrigerant transition is inevitable, as innovation drives HVAC forward. But without clearer communication and coordination next time, contractors’ patience — and trust — may finally run out. 


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Meat-case.jpg
FROSTlines

Optimizing CO2 Systems for Year-Round Efficiency

Exploring low-side evaporator and superheat optimization techniques can help save energy
Andre-Emerson.jpg
Andre Patenaude
October 15, 2025

A recent study has uncovered significant opportunities for year-round energy savings on CO2 refrigeration systems through the use of low-side strategies. 


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Marchese-gauge-manifold.jpg
FROSTlines

Common Troubleshooting Mistakes to Avoid

Identify the cause and correct course of action before starting the repair
Joe Marchese
October 14, 2025

Avoid shortcuts and common mistakes when troubleshooting refrigeration systems. Attention to detail not only improves your skills but also increases your value to your company.  


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    Energy Prices, Inflation, and HVAC: What Today’s Homeowners Care About

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    R-455A Refrigeration: A Cold Storage Solution for the Future

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    Consolidating Roof Penetrations: A Growing Trend in Multifamily HVAC Design

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