We discuss the two most promising scenarios presented in Hutton et al, namely an improved stove intervention and use of LPG instead of solid fuel. The improved stove intervention is a chimneyless rocket stove, assumed to reduce SFU health effects by 35 percent. Annualized unit stove cost is US $ . Annualized unit cost of LPG stove and gas cylinder is US $9-18. LPG consumption is kg per household per day. Annualized program cost per household is less than one dollar in most regions. 14 Reduced mortality is valued at the human.