Canterbury's regional council plans to stop funding cleaner home heating for home owners in Christchurch next year.
The council is shutting down its Clean Heat project in the city because of a decrease in demand for the service and as part of its prioritising of water management instead.
Regional council commissioner David Bedford says the service has been extremely successful, helping to reduce the number of high-pollution nights each year from about 50 a decade ago to just 13 now.
He says there is less need for regional council involvement now the Government also offers financial assistance for clean heating.
Mr Bedford says the September earthquake has also reduced demand because people with damaged chimneys can apply for assistance from the Earthquake Commission.