Aerated Compost Systems

For Every Type of Organic Waste; for Every Scale of Operation; And For Every Budget

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All of our composting systems are designed to be simple to operate, with a focus on “chore efficiency”.
With aerated composting, turning the pile is unnecessary; in fact, turning the pile impedes the composting process.

All of our composting systems convert raw organic residuals into stable compost in roughly 60 days, yielding a nutrient-rich product that is effectively free of pathogens, parasites and weed seeds. In addition, our composting systems mitigate impacts to surface and ground water resources, significantly reduce vectors (i.e., flies, birds, rodents and larger wildlife), and eliminate offensive odors.

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Featured Project

Simmons Road Farm

Edmonds, OK

Beverly and Kent K. purchased their cornerstone compost system in 2008 and constructed a four-bin composter using masonry block with a sliding lid. They compost the manure from their three horses, filling each bin in about a month’s time. While they use some of the compost on their pastures...

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Featured Project

Hilltop Farm

Carpinteria, CA

Evan M. wanted to be a better steward of the land. He found O2Compost during his search for sustainable and efficient ways to handle the waste generated on his farm: horse manure and bedding, leftover hay, yard waste from landscaping, mulch from avocado operations, and food waste. He composts the...

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Featured Project

Sonoma Valley Stables

Petaluma, CA

This ASP compost system uses a 4-pipe system to process the manure and bedding produced in one month from 40 horses on wood pellet bedding. While one pile is "cooking", an adjoining pile is being constructed and at the end of the month the blower is simply moved over and the process is repeated. ...

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Featured Project

Meadow Ridge Farm

Redmond, WA

Before bringing her horses home, Terry S. researched manure disposal methods and found our website. She has five horses using a 50:50 mix of pellets and compost for bedding. The finished compost is also used as fertilizer. Terry says "Using the compost mixed with the pelleted bedding has drastica...

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Featured Project

Small Horse Farm

Bend, OR

Gary B. and his wife Beth constructed an O2Compost Benchmark System to manage the manure generated by two horses and assorted chickens. Their system includes three small aerated bins, a storage room, and an indoor/outdoor chicken pen. It is a perfect example of a multi-use, detached farm structur...

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See what this equine owner has to say about her O2 compost system:

Compost 101

Take action toward establishing sustainable business practices, to benefit urban and agrarian communities worldwide.

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Our Global Growth: ASP Composting Systems in 29 Countries & 49 States

Monday, July 7, 2025

Turning Organic Waste into a Valuable Natural Resource At O2Compost, our mission has always been clear: teach the art and science of aerated composting, and to empower individuals and organiza...

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We will contact you to schedule a time to talk about your specific needs and to answer all of your questions about composting. We look forward to hearing from you!

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