The Captive Aire A3-D-750-G18 make-up air unit is essential for bringing in fresh air and maintaining balanced ventilation in your facility. Parts Town stocks real OEM Captive Aire A3-D-750-G18 parts to help keep your system operating efficiently. You’ll find commonly replaced parts like evaporator coils, probes, and nuts, designed to support proper airflow and dependable operation. Because we only carry genuine OEM components, our selection of Captive Aire A3-D-750-G18 replacement parts has been tested and approved by the equipment manufacturer for safe and accurate fit. With a large inventory of in-stock parts available, it’s easy to find what you need fast. Parts Town offers same-day shipping on in-stock items until 9 PM ET Monday-Friday.