Cold weather is proving good business for some companies.
Heaters and wood burners, gas fireplaces, insulation materials and heat pumps are flying out the door of DIY, specialist and hardware stores.
Businesses providing services through the Government's Warm Up New Zealand campaign are also enjoying brisker trade and with frosts hitting sea level areas of Auckland, consumers are opening their wallets.
Dave Elliott, Mitre 10's marketing general manager, said sales of locally made wood burners and low-cost panel heaters were up nationally.
Tony Te Au, general manager of Tasman Insulation, said people wanted warmer homes and Warm Up New Zealand had helped drive sales.