Evaporators Freezer & Cooler

Upgrade your walk-in with commercial-grade evaporators engineered for cooler and freezer duty. RDI Systems models match popular R-404A/R-410A systems for reliable temperature control with professional installation.

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Evaporators Freezer & Cooler

Built for light commercial applications, these units serve licensed contractors, property managers, and food service operators needing to replace or install refrigeration evaporators for coolers and freezers. Expect durable cabinets, efficient fan systems, and defrost options that protect product quality and minimize downtime.

Choose models rated for R-404A or R-410A to match your condensing unit. Low-temp freezer coils support deep pulls with electric or hot-gas defrost, while medium-temp coils maintain stable cooler ranges with efficient air distribution and even frost control.

Sizing is based on load in BTU/h rather than HVAC efficiency ratings-SEER2 and HSPF2 do not apply to commercial refrigeration. Select capacity by box size, insulation, product load, and design temperature; 1 ton equals 12,000 BTU/h. Verify refrigerant (R-404A or R-410A), coil TD, and defrost method to ensure a proper match and code-compliant installation.

Top Brands for Evaporators Freezer & Cooler

RDI Systems offers dependable evaporators for medium-temp coolers and low-temp freezers, with models tailored to R-404A or R-410A applications and compatible defrost accessories.

Frequently Asked Questions

  • What is the difference between R-404A and R-410A evaporators for cooler/freezer applications?

    They are built for different pressures and components; match the evaporator to the system’s specified refrigerant and target temperature range.

  • How do I size an evaporator for a walk-in cooler or freezer?

    Calculate BTU/h load from box size, insulation, usage, and design temps, then choose capacity and TD to match the condensing unit.

  • Are these evaporators suitable for freezer duty and what temperature range can they support?

    Freezer-duty models typically support -10°F to -20°F box temps with electric or hot-gas defrost.

  • Can I mix an R-404A evaporator with an R-410A condensing unit?

    No. Do not mix refrigerants; pressures, components, and oil types differ and must match.

  • Do these evaporators require professional installation and refrigerant charging?

    Yes. An EPA 608-certified technician must install, evacuate, charge, and commission the system.

  • What maintenance is recommended for commercial cooler/freezer evaporators?

    Clean coils, sanitize drains, verify fan operation, test defrost heaters, and check TXV superheat regularly.

  • How do I select the correct evaporator for a medium-temp cooler versus a low-temp freezer?

    Match capacity, TD, and defrost type to the box temperature: medium-temp for 34-41°F, low-temp for subzero.

  • What accessories or defrost options are compatible with these RDI Systems evaporators?

    Select models support electric or hot-gas defrost, drain pan heaters, TXVs, EC fan motors, and mounting kits.

  • How do I match evaporator capacity to a condensing unit?

    Use the same refrigerant, align BTU/h at design conditions, and confirm TD and airflow specifications.

  • Do these units list SEER2 or HSPF2 ratings?

    No. Refrigeration coils are specified by BTU/h capacity, refrigerant, TD, and defrost method, not SEER2/HSPF2.

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