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Guide

Firewood & Chimney Care

Dry wood and a clean flue make the biggest difference to how well a fire heats, how clean the glass stays and how safe it is.

Burn dry wood

Regional councils, including the Bay of Plenty Regional Council, say firewood should be under 25% moisture. Wet wood smoulders: it gives less heat, blackens the glass and builds up creosote in the flue.

  • Buy or cut wood in spring or summer for the next winter.
  • Stack it off the ground, under cover, with air around it.
  • A cheap moisture meter takes the guesswork out.
  • Never burn treated timber, painted wood or rubbish.

Sweep the chimney every year

Fire and Emergency New Zealand recommends having your chimney cleaned at least once a year, before the first fire of the season. A sweep removes soot and creosote that can catch fire, and it’s a chance to spot cracked bricks, a warped baffle or worn door seals before they cause trouble.

Book a chimney sweep online or see our chimney sweep service.

Habits for a better fire

  • Light it hot and fast with kindling, then add bigger wood once it’s going.
  • Don’t shut the air right down straight after loading — let the new wood catch first.
  • If smoke comes into the room or the glass goes black quickly, get it checked: see fire repairs.

Sources

Official guidance we checked when writing this page (November 2026). Rules and fees change, so check the source or ask us before you rely on a figure.

Good to Know

Common questions

How often should I get my chimney swept?

At least once a year, before the first fire of winter, as Fire and Emergency NZ recommends.

How dry should firewood be?

Under 25% moisture content, which is what regional councils recommend.

Questions?

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