Clean-burning stove

However, the emissions some supposedly clean-burning cookstoves produce are still much greater than safe limits, and in several studies in lower income countries they did not appear to be effective at reducing illnesses such as pneumonia induced by breathing polluted air, which may have many sources.

[12] Once the stove is warmed to within operating temperatures, it produces no visible smoke,[13] emitting mostly water and carbon dioxide.

[12] A conventional domestic heating stove in 1984 emitted particulates amounting to approximately 20g per kg of fuel (0.3oz/lb).

[10] Research by the United States Environmental Protection Agency (EPA) was reported in 1986 to show that conditions such as asthma, bronchitis and emphysema may be aggravated by the use of conventional heating stoves.

[11] The EPA was reported as announcing plans in 1987 to encourage manufacturers to design heating stoves with reduced emissions.