Envirofit M-3300 is a lightweight (3.5 kgs), portable, single-pot, wood-burning rocket-type cookstove. It reduces fuel consumption by up to 60% and harmful emissions by 80%.
Envirofit has regional headquarters in East Africa, West Africa, Asia, and Latin America that offer the local production and distribution of clean cookstoves.
Market Suggested Retail Price
Distributors / Implementing Organizations
Evans Outdoor Store (U.S. domestic distribution company) Interview with representative
Mass produced in China but, for 2018 and according to the Global Alliance for Clean Cookstove, its no longer manufactured.
Intellectural Property Type
User Provision Model
Only available for purchase in U.S. through evansoutdoorstore.com (No longer available on Envirofit website) Interview with representative
Distributions to Date Status
The exact distribution number of the Envirofit M-5000 is unknown, however, and for 2018, Envirofit has sold more than 1 million stoves across 45 countries.
Forced or passive
Flat or round bottom
Pot capacity (L)
Thermal efficiency (%)
36.2% – 38.0%
PM emissions (g/MJ delivered to pot)
0.25 – 0.50 g/MJ
CO emissions (g/MJ delivered to pot)
3.10 – 5.09 g/MJ
Time to boil (min/L)
18 – 32 min per 5 L
Design specifications include the stove body, a single-pot combustion chamber at the bottom and two handles. Envirofit’s designs were developed using advanced computational fluid dynamics and robust emissions and durability testing to optimize the stove geometry and materials. It is portable as it weighs 3.5 kgs and its dimensions are (height x width x depth): 28.8 x 26.1 x 27.5 cm.
Lifecycle is unknown.
Manufacturer Specified Performance Parameters
Manufacturer's performance targets: • 3 times more efficient than an open fire. • 80% reduction in harmful emissions: carbon dioxide reduction by 60% and carbon monoxide by 65% and particulate matter reduction by 45%. • 60% reduction in wood, biomass, and charcoal use.
Vetted Performance Status
Testing results for the G-3300 are summarized and can be downloaded from the Clean Cooking Catalog.
Guidelines provided by Envirofit must be followed when manipulating the stove to avoid burns and spill-overs. Furthermore, keep all flammable items away from the surrounding area of the stove, and do not enclose the area you are cooking within; proper ventilation is always required. Do not touch the body of the stove while in use.
Complementary Technical Systems
Using a pot skirt will increase the efficiency of the cookstove. A G3300 pot skirt is available on Evans Outdoor Store's website.
Academic Research and References
Compliance with regulations
All of the Envirofit cookstove products meet the Global Alliance Tier 2 level standard or higher. Envirofit is also a Certified B Corporation.
Envirofit has won several awards: • 2013 Energy and The Environment Innovators of the Year Award by the Economist • 2013 Spark Award Envirofit Institutional Cookstove Gold Award • 2011 Special Achievement Award: Partnership for Clean Indoor Air Other various awards, available here.