The train fleet for this service consists of push-pull trains utilising former Auckland suburban service carriages that have been completely refurbished and modernised by KiwiRail at the Hutt workshops in Lower Hutt, Wellington. Noske-Kaeser Rail & Vehicle was engaged to refurbish and upgrade the HVAC systems.
The work was extensive and challenging, the HVAC units had not been operated for a number of years and the original manufacturer is no longer in business, however a number of improvements were possible, and the project completed successfully with the trains ready to enter service at the beginning of 2021.