USA Supply carries over 20 heating, cooling, and air quality products from industrial and military surplus channels. In this collection: HDT Global F100-60K 5-ton A/C units and 2019 HDT 60,000 BTU package heating/cooling units (R410), Trane OEM compressors (CRHL100 and CSHA150 models, new), Nordic portable environmental control units (R134A), Bradford White 240V water heater thermostats, the Acutemp HemaCool portable blood storage refrigerator/freezer, and portable work lights. Military-grade environmental control units are engineered for continuous field duty — a durable, surplus-priced alternative for shops, temporary structures, and remote sites. Freight quotes available on large units; contact us before ordering oversize HVAC equipment.