Designed by Envirofit, the M-5000 is a lightweight, rocket-type cookstove that boils 1 litre of water in 5 minutes.
Worldwide. Envirofit has regional headquarters in East Africa, West Africa, Asia, and Latin America that offer the local production and distribution of clean cookstoves.
Goal 7: Ensure access to affordable, reliable, sustainable and modern energy for all.
Off-grid low-income families in developing countries.
Patent-protected both in the U.S. and internationally:
United States: 8,899,222
South Africa: 2011/07401
ARIPO: AP 3229
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.
What fuel type the stoves uses
Does the stove have a chimney?
Whether the stove is forced draft or passive
What pot type(s) the stove can accommodate
The capacity of the pot the stove can accommodate
The efficiency in terms of heat delivered to pot compared to overall heat produced through combustion
PM2.5 emissions of the stove per MJ
CO emissions of the stove per MJ
The amount of time it takes to bring a specified amount of water to boil
Design specifications include a tired pot support, cast iron drip pan, wooden handles, emissions reduction ring, lightweight heat-reflecting shield, patented heat-resistant alloy chamber, high fire-power chamber design, foot-supported base.
With a pot diameter capacity of up to 30 cm, the M-5000 stove weighs 4.2 kgs and its dimensions are (LxWxH) (cm): 32 x 32 x 28.
This stove has a 1-year warranty and an expected lifespan of 4 to 7 years.
Improve efficiency three-fold
Seven minutes to boil 1L of water
Reduction of fuel: 66%
Cooking time reduction: 50%
Toxic emission reduction: 82%
A summary of the testing results for the M-5000 can be downloaded from the Clean Cooking Catalog.
Engines & Energy Conversion Lab, Colorado State University.
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.
Envirofit also commercializes the following accessories for the M-5000 model: a round-bottom pot skirt or flat-bottomed pot skirt, the G-3355 double pot attachment and GoGrill premium grill accessory.
Lombardi, F., Riva, F., Colombo, E (2018). Dealing with small sets of laboratory test replicates for Improved Cooking Stoves (ICSs): Insights for a robust statistical analysis of results. Biomass and Bioenergy. Volume 115, August 2018, Pages 27-34.
Stokes, D (2015). Final Technical Report: Thermoelectric-Enhanced Cookstove Add-on (TECA) for Clean Biomass Cookstoves. OSTI.GOV. U.S. Department of Energy Office of Scientific and Technical Information.
Ehrensperger, A., et al (2017). What future for cooking with solid biomass? The benefits of improved stoves and micro-gasifiers. Bern Open Repository and Information System.
Dischino, K (2015). Methods for particulate matter emissions reduction in wood-burning cookstoves. Colorado State University.
The independent testers rated this stove on emissions, indoor emissions and efficiency (but it was not tested on safety).
All Envirofit products undergo the Envirofit Quality Testing Services (EQTS) to ensure high quality. Envirofit is also a Certified B Corporation.
Envirofit’s designs were developed using advanced computational fluid dynamics and robust emissions and durability testing to optimize the stove geometry and materials.
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.
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