Case studies

Winemakers Pernod Ricard are set to cut their natural gas bill by $21,000 a year thanks to a new hot-water boiler at the company's Auckland wine-bottling plant.

The $55,000 Northvale boiler is used to heat water for cleaning the equipment at the plant. It is almost 12% more efficient than the steam boiler it replaced, and it is expected to reduce the amount of natural gas the company uses by 479,000 kWh a year.