"The supply of dry wood is limited, and as we get to the end of winter there is less available and the price starts to rise, frequently leaving only wet wood for sale by the end of winter," he said.
The best option is to "buy to burn next year", according to Heaney, with the best time to buy firewood during the early summer months.
The HBRC 'Good Wood' scheme can help buyers know they're getting wood that will burn dry and hot.
"We run this programme because Hawke's Bay's air quality isn't as good as it needs to be during the winter months when people buy and burn wet wood," Heaney said.
"This scheme recognises and promotes merchants who care about air quality, and care about their customers getting value for money."