American Walk-In Cooler Authority 404A refrigerant PT chart

404A Pressure Temperature Chart — The Complete Authority Guide by American Walk-In Cooler Authority

26 Aug, 2025
Posted by: American Mortuary Coolers

Introduction

In the world of funeral refrigeration and walk-in mortuary coolers, precision is everything. Whether you manage a funeral home, hospital morgue, or university cadaver lab, you need accurate control over your refrigeration system. That’s where 404A refrigerant — commonly known as R-404A — comes in.

For decades, R-404A has been the industry standard refrigerant for walk-in coolers and freezers, known for its low-temperature performance and reliability. To operate effectively, professionals rely on the 404A pressure temperature chart (PT chart), which outlines the exact relationship between refrigerant pressure and temperature.

At American Walk-In Cooler Authority, we are not only the trusted supplier of American-made walk-in mortuary coolers, but also the nationwide authority on refrigeration knowledge and performance. In this guide, we’ll explain everything you need to know about 404A PT charts, how they apply to mortuary coolers, and why our brand has become the go-to standard for funeral refrigeration equipment.

🧊 What is 404A Refrigerant (R-404A)?

R-404A is a hydrofluorocarbon (HFC) refrigerant blend developed as a replacement for older refrigerants like R-502. It’s designed specifically for low and medium temperature refrigeration applications, including:

Funeral home walk-in coolers
Morgue refrigeration systems
University cadaver storage labs
Cold storage facilities

Key benefits of R-404A refrigerant:

✅ Proven low temperature performance (down to -40°F).
✅ Stable and reliable for continuous operation in mortuary settings.
✅ Widely available and industry-standard refrigerant for coolers and freezers.

📊 Understanding the 404A Pressure Temperature Chart

The 404A PT chart is essential for technicians, funeral directors, and hospital facilities managers. It provides the correlation between saturation pressure (in PSI) and temperature (°F/°C).

This chart is used to:

Ensure coolers maintain the correct body storage temperatures (34°F – 40°F).
Diagnose performance issues with compressors and evaporators.
Verify safe, efficient operation of refrigeration systems.

Sample Points from a 404A PT Chart:

-20°F → 13.3 PSI
0°F → 35.9 PSI
40°F → 72.9 PSI
100°F → 196.4 PSI

By consulting this chart, technicians can confirm that walk-in mortuary coolers are running at optimal efficiency.

🏗️ Why 404A Matters for Walk-In Mortuary Coolers

At American Walk-In Cooler Authority, our clients include funeral homes, hospitals, coroners, and universities. For all of them, 404A is a critical component of their refrigeration system:

Funeral Homes: Preserve remains with dignity and regulatory compliance.
Hospitals & Morgues: Depend on continuous refrigeration under heavy workloads.
Universities & Forensics: Require consistent temperature stability for research and anatomy studies.

Without accurate knowledge of 404A PT charts, equipment risks inefficient operation, unsafe temperatures, or costly downtime. That’s why we supply not just equipment — but also the expert knowledge funeral professionals need.

⚙️ Common Applications of 404A Refrigerant

Walk-In Mortuary Coolers (2–12 body units)
Upright Funeral Home Coolers (2–6 body systems)
Morgue Refrigeration (for medical examiners & coroners)
Forensic University Labs (cadaver storage and teaching)
Mortuary Freezers & Roll-In Coolers

Every system we ship from American Walk-In Cooler Authority is designed for 404A compatibility and backed by nationwide service support.

⚠️ Regulations & The Future of 404A

While 404A continues to be widely used in 2025, there is increasing pressure to adopt refrigerants with lower environmental impact. However, funeral refrigeration remains one of the strongest markets for 404A, because it’s proven, reliable, and backed by extensive availability.

At American Walk-In Cooler Authority, we stay ahead of regulations and provide clients with guidance on future refrigerant transitions, ensuring that your walk-in cooler investment remains secure.

⭐ Why American Walk-In Cooler Authority is the Standard

We are more than a supplier — we are the nationwide authority in funeral refrigeration.

✅ American-Made Equipment — built to last with stainless steel and precision components.
✅ Nationwide Shipping & Installation — all 50 states & Canada.
✅ A+ BBB Accredited Since 2015 — over a decade of trust.
✅ Backed by American Mortuary Coolers — the leading name in mortuary refrigeration.
✅ Trusted by Funeral Directors, Hospitals & Universities — proven nationwide.

By combining 404A expertise with American-made walk-in cooler manufacturing, we have become the true authority in funeral refrigeration systems.

📞 Call to Action

Need a Walk-In Mortuary Cooler That’s Built for 404A Refrigeration?

Trust American Walk-In Cooler Authority — the nation’s #1 supplier of American-made walk-in mortuary coolers and the go-to authority for 404A PT charts.

📞 Call us at 1-888-792-9315
📧 Email: cool@mymortuarycooler.com
➡️ Explore Walk-In Coolers at MyMortuaryCooler.com