Taking a Closer Look at Replacement Hot Water Coils. (But not too close – they’re hot, folks.)

UNDERSTANDING HOW HOT WATER COILS OPERATE

Hot water coils function as tube-fin heat exchangers where rows of tubes pass through fin formations that are securely bonded via tube expansion. As cool air moves over the coil and interacts with the heated fins, thermal energy transfers from the hot water circulating inside the tubes to the incoming cold air. This process facilitates effective heat exchange.

These coils serve multiple purposes, such as energy recovery, reheating, preheating, supplementary heating, and providing comfort-level warmth. Their versatility makes them indispensable in various HVAC systems.

DESIGNING FOR PERFORMANCE AND DURABILITY

Although hot water coils share common features, their specific construction materials and design specifications vary based on intended use cases. They usually come equipped with one to three rows of tubes, though some models may feature additional rows depending on requirements.

Standard components include copper tubing paired with aluminum fins; however, thicker copper tubes measuring 5/8", 1/2", or 3/8" are also available. The water flowing within these tubes can reach temperatures up to 200°F. For harsher environments or specialized industries like food processing, stainless steel tubing or fins might be employed instead.

Certain hot water coils lack headers, earning alternative names such as booster coils, reheat coils, or heater core coils. These units aim to restore warmth lost during ductwork transport, ensuring consistent room temperatures regardless of location relative to the air handler.

Occasionally, you'll find coils fitted with collection headers on both ends—this configuration often arises when replacing older models from brands like Heatcraft™/McQuay®. Over time, Nationwide Coils has crafted countless custom and original equipment manufacturer (OEM) replacements spanning diverse dimensions, ranging from compact frames to expansive walls. Many of these products act as reliable stand-ins for well-known manufacturers including Carrier®, Trane®, York®, and others.

PRECISION IN SIZING YOUR COIL

Replicating existing hot water coils requires attention to detail regarding fin height, fin width, and row count. For accurate duplication tailored specifically to your needs, providing precise measurements ensures proper fitment and optimal functionality.

When ordering new installations, essential parameters include cubic feet per minute (CFM), typically reaching up to 1250 ft/min for face velocities, entering dry bulb temperatures, gallons per minute (GPM), desired capacities, and target leaving air temperatures. To assist with accurate documentation, our website provides downloadable blank coil templates accessible via the blank coil drawings section.

EASE OF ORDERING REPLACEMENT COILS

Nationwide Coils offers extensive customization possibilities alongside preselected standard sizes catering to both commercial and industrial heating demands. Whether seeking a straightforward quote or requiring expert guidance, don't hesitate to contact us directly via email.

Our team remains committed to simplifying your procurement experience by delivering top-tier solutions designed to meet modern challenges head-on.