Commercial Evaporator Coils

Evaporator coils are an essential component of commercial HVAC and refrigeration systems, responsible for absorbing heat from the air as refrigerant passes through the coil. As warm air moves across the coil's finned surface, heat is transferred to the refrigerant, allowing cooled and dehumidified air to circulate throughout the building.

Evaporator coils are used in a wide variety of commercial applications, including air handlers, rooftop units, make-up air units, computer room air conditioning (CRAC) systems and custom HVAC equipment. Depending on the application, coils may be designed to meet specific airflow, capacity, pressure drop and dimensional requirements.

Custom Evaporator Coil Design

No two systems are exactly alike. Custom evaporator coils are engineered to match the performance and physical dimensions of the original coil while meeting the operating requirements of the HVAC system. Design considerations may include:

• Cooling capacity
• Airflow (CFM)
• Refrigerant type
• Number of rows
• Fin spacing (FPI)
• Tube diameter and wall thickness
• Coil face dimensions
• Connection sizes and locations
• Casing material and construction

Matching these specifications helps ensure proper system performance and efficient heat transfer. Nationwide Coils also provides blank coil drawings that can help document existing coil dimensions and construction details when planning a replacement.

Materials and Construction

Commercial evaporator coils are commonly manufactured using copper tubes with aluminum fins, although stainless steel, copper and cupro-nickel construction may be used for specialized environments or corrosive applications. Coil construction can also be customized with galvanized or stainless steel casings to meet the needs of the installation.

Nationwide Coils manufactures commercial HVAC coils for a variety of system requirements, including applications where specialized materials or construction may be necessary.

DX Evaporator Coils

One of the most common types of evaporator coils is the direct expansion (DX) evaporator coil . In a DX system, refrigerant expands directly inside the coil, absorbing heat from the air as it changes state from a liquid to a vapor. DX evaporator coils are widely used in commercial air conditioning systems because of their efficiency and versatility.

Nationwide Coils offers custom DX Evaporator Coils with multiple tube materials, tube sizes, fin configurations, casing materials and circuiting options for commercial HVAC applications.

For applications involving commercial air handlers, learn more about commercial air handler DX evaporator coils .

OEM Replacement Evaporator Coils

When an existing evaporator coil fails due to corrosion, leaks or age, replacing the entire HVAC unit is often unnecessary. A custom OEM replacement evaporator coil can be manufactured to match the original dimensions and performance characteristics while fitting directly into the existing equipment.

Accurate replacement coils are typically produced using original equipment information, coil drawings or field measurements to ensure proper fit and operation. Nationwide Coils manufactures OEM replacement coils for major commercial HVAC equipment manufacturers and can also produce replacements for other makes and models based on the required specifications.

Need a Replacement Evaporator Coil?

Provide Nationwide Coils with your existing coil specifications, equipment information or measurements to get started on a custom commercial evaporator coil replacement.