Heater packs, available as an optional addition to some ATC units, extend the functionality of chiller systems by enabling temperature control beyond the standard upper limit of 35°C, up to 65°C (with options for higher temperatures available after consultation with an ATC salesperson). These packs are particularly useful in scenarios where the cooling capacity of a chiller is insufficient to maintain the desired temperature range on its own. When the fluid temperature falls below the setpoint, the heater pack’s heating element activates, raising the fluid to the required temperature. The heating element functions by converting electrical energy into heat as it passes through a resistive material, typically a high-resistance metal alloy like stainless steel, thereby transferring heat to the surrounding fluid.

Incorporating a heater pack into a chiller system offers several advantages. It allows the chiller to maintain specific temperatures above its normal range, enhancing its efficacy. The chiller can heat and cool fluids more efficiently, maintaining fluid temperature with a smaller differential and reducing the compressor’s workload. This dual capacity of heating and cooling makes the chiller a versatile solution for various applications. Additionally, integrating heating and cooling into a single unit can result in costs savings by eliminating the need for separate systems. Precise temperature control also improves product quality and consistency, as processes and products are less likely to be affected by temperature variations.

However, the addition of a heater pack comes with certain considerations. The energy consumption of the chiller may increase, leading to higher operational costs. Regular maintenance, including cleaning and inspection of the heater pack, is necessary to prevent potential issues. The heating capacity is limited to 65°C, which might not suffice for high-temperature applications, though higher temperature options are available. Moreover, integrating a heater pack into a chiller system can increase the initial investment cost. Despite these potential drawbacks, a heater pack can be a valuable enhancement for applications requiring precise temperature control within a wider range.