404A pressure temperature chart for walk-in mortuary cooler

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

26 Aug, 2025
Posted by: American Mortuary Coolers

📊 Understanding the 404A Pressure Temperature Chart

A pressure temperature (PT) chart shows the relationship between the saturation pressure of 404A refrigerant and its corresponding temperature.

Funeral homes, morgues, and universities need this information to:

Maintain correct refrigeration temperatures for body storage.
Ensure compliance with health and safety regulations.
Diagnose system performance issues.

For example:

At -20°F, 404A has a pressure of about 13.3 psi.
At +40°F, 404A has a pressure of about 72.9 psi.
At +100°F, the pressure rises to around 196.4 psi.

Understanding this chart ensures walk-in mortuary coolers maintain proper body storage temperatures (typically 34°F – 40°F).

🏗️ Why 404A Matters for Walk-In Mortuary Coolers

At American Walk-In Cooler Authority, we emphasize that choosing the right refrigerant is just as important as choosing the right cooler.

Funeral Homes: Depend on consistent cooling to maintain dignity and compliance.
Hospitals & Morgues: Need reliable performance under high demand.
Universities & Forensic Labs: Require accurate temperature control for research and study.

Using 404A PT charts ensures your walk-in cooler is operating safely, efficiently, and consistently.

🔧 Common Applications of 404A Refrigerant

Walk-In Mortuary Coolers
Upright Funeral Home Coolers
Hospital Morgue Refrigeration
Forensic & University Cold Storage
Cadaver Freezers and Roll-In Systems

At American Walk-In Cooler Authority, all our systems are designed with precision cooling and compatibility with 404A refrigerant.

⚠️ 404A Regulations and Transitioning

While 404A remains common in 2025, there are ongoing discussions about transitioning to newer refrigerants with lower GWP (Global Warming Potential).

But for funeral directors and hospitals, 404A continues to be the most reliable refrigerant in mortuary coolers — and we provide guidance on proper operation and maintenance using PT charts.

⭐ Why Choose American Walk-In Cooler Authority?

✅ American-Made Quality — durable walk-in mortuary coolers built to last.
✅ Nationwide Coverage — serving all 50 states & Canada.
✅ Expert Knowledge — trusted authority in 404A refrigerant applications.
✅ BBB A+ Accreditation Since 2015 — over a decade of trust.
✅ Backed by American Mortuary Coolers — the nation’s leading mortuary equipment supplier.