Evaporator / DX Coils
A n Evaporator/DX coil — short for direct expansion coil — is used to cool and/or remove moisture from air streams in commercial and industrial HVAC systems. A liquid-vapor mixture of refrigerant enters the direct expansion coil and absorbs heat as it evaporates, cooling the surrounding air before leaving the coil as a gas. Whether you need a DX coil HVAC replacement or a fully custom-engineered DX cooling coil, Coil Replacement Company has the experience and OEM data to deliver an exact-fit solution.
Built to Industry Standards
Coil Replacement Company evaporator/DX coils are built to exacting industry standards and specifically designed to match the refrigerant in your current system. Additionally, our direct expansion are designed to support refrigerant transitions — as environmental regulations change rapidly, so do the refrigerants required to comply with them. CRC can assist with transitioning from virtually any existing refrigerant to any new refrigerant, allowing customers to stay compliant while continuing to operate within an existing air handling unit.
Coil Replacement Company has mastered the art of building direct replacement coils for manufacturers including, but not limited to, Aerofin, American Standard, Bohn, Carrier, Daikin, Lennox, Magic Aire, Modine (formerly Heatcraft, Luvata), McQuay, Munters, Trane, Westinghouse, and York. In addition, CRC maintains 100+ years of OEM engineering drawings and proprietary performance heat transfer data — used to precisely match the size and performance of your existing DX coil, ensuring connections align with existing piping in your facility.
CRC assigns a dedicated engineer to review, visit, measure, or consult (virtually) on your exact requirements. CRC then generates drawings, performance evaluations, and quotations — while taking full responsibility for your coil solution. We deliver unparalleled service, allowing mechanical contractors and end-customers to focus on their core property management responsibilities.
Frequently Asked Questions About Evaporator/DX Coils
A DX coil (direct expansion coil) is a type of heat exchanger used in HVAC systems where refrigerant expands directly inside the coil tubes to absorb heat from the surrounding air stream. As the refrigerant evaporates, it cools and dehumidifies the air passing over the fin surface before the refrigerant exits as a gas and returns to the compressor.
A DX coil uses refrigerant that expands directly inside the coil to cool the air — making it a self-contained cooling solution common in packaged rooftop units and split systems. A chilled water coil circulates cold water produced by a remote chiller through the coil. DX systems are typically used for smaller-to-mid-sized applications, while chilled water systems are common in large commercial and industrial buildings.
Yes. Environmental regulations change rapidly, and the refrigerants required to comply with them change along with it. CRC specializes in building direct expansion coils that support transitions from virtually any existing refrigerant to any new refrigerant — not just R-22 to R-410A. This allows customers to stay compliant with current regulations while continuing to use their existing air handling unit, avoiding costly full-system replacements.
Complete CRC's Coil Requirement Questionnaire or call 888.335.7456. A dedicated CRC application engineer will review your existing coil data, visit your facility if needed, and generate drawings, performance evaluations, and a quote — ensuring the replacement DX coil HVAC fits perfectly and performs to spec.
Long-Lasting Performance That Increases Coil Lifespan
To ensure long-lasting performance while increasing the lifespan of your evaporator coil, CRC offers many different coating options that provide an additional level of protection against corrosive environments including, but not limited to, automotive paint houses, chlorinated pool facilities, coastal sea areas, industrial manufacturing plants, locations with high sun exposure, medical/pharmaceutical environments, and restaurant kitchens. Contact us for assistance in selecting from our available coatings, including ElectroFin® E-coat, Endura® Coatings (750+ Technologies), Infinigard, phenolic, and UV Topcoat.
Why not give CRC a call now … and let’s work together to find the customized solution that is right for you!