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Compostio C40 Automatic Composter - Family size

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Product Description

Make the bigger, top of the line Compostio (formerly NatureMill) C40 part of your composting and recycling regimen and easily turn your food scraps into fertilizer. Food scraps are the least recycled item in the world, it is approx. 60% of what is in our landfills and can easily be recycled by composting with the Compostio C40.  The Compostio C40 unit can handle 4 gallons of food scrapes per week. This is perfect for a larger family of 3-5 people, or those who really have a lot of vegetable scraps. Makes a great gift. FREE SHIPPING.(PLEASE NOTE:This item requires up to 3-5 days for processing after your order is placed.)

Compostio C40 Features:

  • 4 gallon (15 L) weekly capacity:
  • Control panel with 3 power settings: High, Medium, and Low
  • Material-energy efficient APPRO which keeps the heat in the unit, helping the compost break down faster.
  • Can process 3-4 pounds of food waste per day
  • Color: Black
  • Warranty: 1 Year
  • Made in USA
  •  made-in-usa.png


Features All Compostio Units: 

  • Control panel with 3 power settings: High, Medium, and Low
  • Made from APPRO which is a durable, recyclable, lightweight, and energy efficient material. Helps keep heat in the unit which breaks the food scraps down faster.
  • Automatic mixing, heating, and air flow
  • Fully assembled, ready to use –includes power supply, 1 box of baking soda, and 5.5 pounds of pellets to get you started with.
  • Hot composting process which accepts meat, fish, and diary.
  • Two chamber system: add food any time to the upper chamber and then when full transfer to the lower chamber and start over again. The lower chamber keeps curing.
  • Internal Components food grade metal that will not rust
  • Internal Temperature: 100-140 F, depending on usage and settings
  • External Temperature: use in any location 0-120 F
  • Produces fresh compost every 2 weeks, based on usage. 
  • Use indoors or outdoors
  • Dimensions: 20 x 12 x 20 inches and 22 pounds
  • Made from recycled and recyclable materials and stamped with the "5" triangle recycling symbol
  • Manufactured in the USA
  • Comes with a quick guide, food guide, and instructions to get you started composting right away. 

Hot Composting Process:

Compostio composters use a hot composting process. We have accelerated the heat, air flow, and mixing inside the unit and with the constant heat, mixing, and constant air flow speeds up the composting process helping you produce compost in 2 as little as weeks. Normal composting outside can take up to 6 months to produce compost.

Two Chamber System:

The Compostio composters are a two chamber system which can breakdown your food scraps, turning it into compost within 2 weeks. The upper chamber contains the mixing arm, air pump, air filter, and heating mechanism. You can add food scraps to the upper mixing chamber while the unit automatically mixes every few hours, there is constant air flow helping to decrease odors, and the heating element along with the natural energy of the compost creates an internal temperature between 120-140 degree’s killing off any pathogens and bacteria.

The lower chamber is used when you upper chamber is full and looks like compost, usually within two weeks. You simply transfer your compost from the upper chamber to the lower chamber and continue to let it cure for another week. Compost likes the constant heat and air flow and this helps to continue the composting process.

Housing Material:

Our units are made from APPRO which is a durable, recyclable, lightweight, and energy efficient material

APPRO has a number of benefits:

-The material is lightweight and able to withstand impact without damaging the structure or losing its shape

-It is not affected by composting elements such as heat, cold, food scrapes, grease, oil, and water which prevent the growth of bacteria and pathogens.

-The thermal insulation keeps heat inside the unit to help keep the composting process going at all times as well as helping to speed up the process.

-It is 100 % recyclable. 

-Stainless Steel Components: All of the components are food grade steel which prevent the growth of bacteria and pathogens.

Air Pump and Air Filter Technology

Our air pump and air filter help eliminate odors by allowing the external pull of air through the air pump and air filter and this along with the charcoal helps eliminate trash odors when the air exits. This constant air flow helps speed up the breakdown of the food scraps creating compost faster.

Transferring Flapper System:

Composting is a messy operation and with our flapper system you don’t have to open the unit and manual mix your food scraps, nor move your compost to the bottom chamber. The Compostio does this all for you. Your food scraps will automatically mix every couple of hours and when your food scraps look like compost you simply press the transfer button and the unit will automatically mix one last mixing cycle and then open the flappers transfer your food scrapes to the cure tray below.  In the cure tray your compost will continue to break down and keep nice and warm.

Using your compost:

The Compostio composting systems help speed up the compost process very quickly allowing you to produce fresh compost every 2 weeks. This compost can be used right away but it is very rich in nitrogen and should be used in a small amount to begin with. We recommend not using the fresh compost indoors for 2-3 months and we also recommend using a small amount on the top soil to begin with. This will help the new compost to continue to receive fresh air and continue breaking down. 


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