DX Evaporator Coils

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Also known as: DX Coils, DX Expansion Cooling Coils, DX Cooling Coils, Coil Evaporators, Refrigeration Evaporators and Refrigerant Evaporators our DX evaporator coils are built with either 3/8“, 1/2” or 5/8” O.D. tubes and multiple wall thickness options. Shaped Evaporator Coils available for all types of refrigerant cooling applications. Various circuiting capabilities as well as face split and intertwined designs available.

USA Coil & Air has an extensive library of OEM designs and can help with the replacement of all major OEM manufactured coils, including but not limited to: Carrier, Trane, McQuay, York, Heatcraft, Aerofin, American-Standard, Bohn, Colmac, Marlo and more.

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The equipment USA Coil & Air builds is specially made to order to meet your exact engineering requirements but we also understand time critical projects require quick turn around. Our expedited production program allows us to offer coil shipments in as little as 10, 5, 3 and 1 working days guaranteed.

Shipping Option

Cost

20 Business Days

Standard Shipment

10 Business Days

25% Premium

5 Business Days

50% Premium

3, 2, & 1 Business Days

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See our Shipping Schedule for all other HVAC equipment offered.

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Please note: Commercial equipment only – no residential products

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DX Evaporator Coils Materials and Specifications

FINS

Secondary surface (fins) are of the plate-fin design using aluminum or copper, with die-formed collars. The fin design for 5/8” & 1/2” O.D. tubes is to be flat, waffle, or sinewave in a staggered tube pattern to meet performance requirements. The fin design for 3/8” O.D. tubes is to be flat, louvered, or sinewave in a staggered tube pattern to meet performance requirements. Collars will hold fin spacing at specified density and cover the entire tube surface. Aluminum properties are to be Alloy 1100 per ASTM B209, with O (soft) temper; copper is to be Alloy 11000 per ASTM B152-06 with soft (anneal) temper. Fins are to be free of oils and oxidations.

TUBES

Tubes and return bends shall be constructed from seamless UNS C12200 copper conforming to ASTM B75 and ASTM B743. Properties shall be O50 light annealed, with a maximum grain size of 0.040mm. Tubes are to be mechanically expanded into plate fins for maximum heat transfer.

HEADERS

Standard headers are to be constructed of seamless UNS C12200, Type L copper material sized to match specified connection size. Headers are to have finished integral spin-closed ends designed to withstand test pressure.

CONNECTIONS

Evaporator coils shall be designed with brass liquid distributors (as required) and copper sweat suction connections. Distributors shall be capped using soft-solder for ease of cap removal; suction connections shall be capped.

CASING

Coil casing material shall be of G90 galvanized steel, 16 gauge minimum. Heavier gauge and optional material casings are available as required. Intermediate tube supports are to be provided on all coils 50” and longer fin length. Coil casings on top and bottom of coils are to have double-flange construction, allowing for vertical stacking of coils.

PRESSURE TESTING

Coils shall be tested at 550 PSIG using dry nitrogen, submerged under water. Dual-operator verification shall determine that all coils are leak-free. Coils shall be certified to withstand 750 PSIG working pressures and guaranteed up to 200° F working temperature.

CERTIFICATION

Our coils are UL recognized as Refrigerant Containing Component. Coils to be used with refrigerant R-410A will have undergone cycle testing and will be safety listed with a 750 PSIG rating.

DX EVAPORATOR COILS

Standard/Base in Bold Below

Tube O.D.	Tube Thick	Optional Tube	Fin Thick.	Optional Fin
3/8″	.014	.016 .022	.006	.0075
1/2″	.016	.025	.006	.0075 .010
5/8″	020	.025 .035 .049	.006	.0075 .010