The Relationship Between Climate and Refrigeration Load

Mortuary coolers must remove both sensible heat (air temperature) and latent heat (humidity). Hot, humid climates introduce heavier thermal loads that require larger compressors, longer cycles, and additional condenser surface area to maintain safe storage temperatures.

In cooler, drier regions, the refrigeration system may require low-ambient controls or cycle optimization to prevent overcooling or oil migration during colder months.

How Regional Climate Impacts Equipment Selection

• Warm, Humid Climates (South, Southeast, Coastal): Choose remote condensing systems, high-capacity compressors, and efficient airflow to handle moisture and elevated THI.
• Cold Climates (Northern, Mountainous Regions): Include low-ambient kits and crankcase heaters to stabilize compressor operation during freezing conditions.
• Dry, Arid Climates (Desert Regions): Favor systems with humidity stabilization to avoid gasket drying and seal cracking.
• Mixed or Variable Climates: Plan for seasonal load balancing — systems should handle both heat and cold extremes efficiently.

Seasonal Load Fluctuations and System Stress

During summer, higher ambient temperatures increase refrigerant pressure and energy use. In winter, cold ambients can cause oil viscosity issues, leading to poor lubrication and premature wear. Annual maintenance before seasonal transitions ensures steady performance and extends system life.

Pro Tip: Schedule preventive maintenance in late spring and early fall to prepare the system for temperature swings and humidity shifts.

Climate-Responsive Sizing Principles

1. Identify Average and Peak Temperatures: Use regional climate data to estimate worst-case load conditions.
2. Account for Humidity: High humidity increases latent heat; size coils and condensers accordingly.
3. Factor in Ambient Room Conditions: Facilities without conditioned air need higher capacity systems or improved ventilation.
4. Plan for Seasonal Service Adjustments: Re-calibrate thermostats and inspect expansion valves seasonally.

Benefits of Climate-Aware Sizing

• Prevents temperature drift and condensation issues
• Improves compressor longevity and coil performance
• Optimizes energy efficiency for year-round operation
• Reduces unplanned maintenance and repair costs
• Maintains OSHA and health department compliance

Partnering with the Right Manufacturer

American Mortuary Coolers designs and builds refrigeration systems matched to your region’s climate and THI data. Whether you operate in a humid Gulf Coast facility or a dry Midwest lab, our engineering team ensures each unit meets capacity and compliance requirements.