New rules for home heating wood, coal and multifuel fires come into force from today.
The Bay of Plenty Regional Council's Air Quality Control Bylaw for Rotorua officially started today, however, help was still available for people to make the switch to clean heating.
The new rules, which have been more than a decade in the making, mean residents can no longer use wood burners installed before September 1 2005 in the Rotorua Airshed.
All coal and multifuel burners will also be illegal to use, regardless of when they were installed. Bay of Plenty Regional Council's senior regulatory project officer Marion Henton said the new rules were about helping to improve Rotorua's poor air quality in winter.
Changes had already been noted as more people switch to cleaner forms of heating, she said.