Keeping down time to a minimum is crucial for all railroads. For railroads, lower inventory levels demand that you get short lead times from suppliers. It is a key part of keeping your fleet active. This is something EngineAir strives for. All EngineAir remanufactured heat exchange units meet or exceed OEM specifications. We carry a one year warranty and back our products 100%. All blowers are upgraded to 645E type, utilizing the high flow front end bearings. EngineAir has earned an excellet reputation with the Short Line and Class I railroads in this regard.