Patsari Stove
Patsari Stove

The Patsari stove has an optimized design of the combustion chamber and tunnels, custom-designed parts for durability, including a metal chimney support and metal comals (pans to place the pots). The cookstove is made with the aid of a metallic mold that ensures that critical dimensions are maintained. The exterior structure of Patsari stove is made with brick, and the internal body is made of a mixture of mud, sand and cement. All the materials are available locally; the custom-made stove parts are also manufactured by local small industries. The Patsari stoves have a primary comal of 52 cm diameter very useful for cooking tortillas (this comal can be metal o ceramic), and have two secondary comals of 27 cm diameter.

IWA tiers of performance
Show subtiers
Indoor emissions
Information for consumers
Maximum pot capacity
20 L
Approximate lifetime
15 years
People fed per meal
Pot type accommodated
(Flat bottom/Round bottom)
Countries deployed
Common foods cooked
tortillas, beans, chicken soup, tamales, soup, etc
Manufacturer's warranty available?
General information
Manufactured in
Suggested retail price
USD 80-130
On the market
Dimensions (l/w/h)
1100/700/270 mm
300.0 kg
Shipping dimensions
not available
Shipping weight
not available
Local assembly possible?
Materials needed for local assembly
brick, clay, sand
Includes instructions?
Other information
not available
Built in place, Chimney, Griddle/plancha, Rocket, Non-traditional, Household
Dung, Wood
Brick, Cement, Clay, Metal
Performance details
IWA efficiency  
Metric Min value Max value Number of tests
IWA high power thermal efficiency 17.0 % 17.0 % 1
IWA low power specific consumption 0.12 MJ/min/L 0.12 MJ/min/L 1
Efficiency, energy consumption and fuel use
Metric Min value Max value Number of tests
Cold start thermal efficiency 7.0 % 7.0 % 1
Hot start thermal efficiency 17.0 % 17.0 % 1
Specific energy consumption 12890.0 kJ/task 16720.0 kJ/task 2
Metric Min value Max value Number of tests
Cold start firepower 9100.0 W 9100.0 W 1
Hot start firepower 4400.0 W 4400.0 W 1
Simmer firepower 2300.0 W 2300.0 W 1
Metric Min value Max value Number of tests
CO emissions factor (2) 16.333 g/kg fuel 81.667 g/kg fuel 5
CH4 emissions factor (2) 0.933 g/kg fuel 5.467 g/kg fuel 5
CO emissions rate 1.656 g/min 1.656 g/min 1
PM emissions rate 54.0 mg/min 54.0 mg/min 1
Fugitive PM2.5 emissions rate 3.78 mg/min 3.78 mg/min 1
Fugitive CO emissions rate 0.01656 g/min 0.01656 g/min 1
CCT/UCT metrics
Metric Min value Max value Number of tests
Specific consumption (fuel) 640.0 g fuel/kg food 840.0 g fuel/kg food 2
Specific consumption (energy) 12.9 MJ/kg food 16.7 MJ/kg food 2
Specific consumption savings from baseline 50.0 % 61.0 % 2
KPT metrics
Metric Min value Max value Number of tests
KPT wood used 1.2 kg/SA/day 1.4 kg/SA/day 2
KPT energy used 21.3 MJ/SA/day 22.5 MJ/SA/day 2
KPT energy savings from baseline 0.48 % MJ per SA 0.57 % MJ per SA 2