Fog Hashing is now Fog Computing.Read the announcement
Bitcoin infrastructure · C Series

Immersion mining,
at home.

Immersion cooling kits with a minimal design, made for mining at home. The miners run quiet and steady, with heat reuse available.

Talk to sales
A C Series immersion tank on its casters, studio-lit against a black ground

What immersion
changes at home.

Fluid takes the heat and the noise off the miners, and the headroom it buys is worth 20 to 50% more revenue.

Quick setup in 30 minutes

  • +Minimal design for easy setup
  • +Single loop reduces complexity
  • +All necessary accessories included

Whisper-quiet operation

  • +Immersed miners dramatically reduce noise
  • +Dry cooler placed outdoors
  • +Quieter than air conditioning units

Gain 20+% revenue

  • +Enables mining rig overclocking
  • +Boosts revenue by 20 to 50%
  • +Extends the mining rig's lifespan

What makes
C Series stand out.

Two EC fans in close-up, yellow blades behind the guard

Energy-saving EC fans

Fan speed follows ambient temperature, so the cooler draws what the weather asks for and no more.

The dry cooler against a split desert and snowfield backdrop

Cooling through extreme climates

Rated to hold a stable loop through high-temperature summers and snow alike.

The tank piped to a room radiator, flow and return lines in yellow

Heat recovery for space heating

The heat the miners make goes into a room or a pool rather than out of a window.

The dry cooler and tank beside a muted-speaker mark

Quiet and stable

Engineered to run unattended at a noise level a home can live beside.

Close-up of the swivel casters under the tank

Swivel wheels

The tank rolls, so a corner of a garage or a basement is not a permanent decision.

Which one is
right for you.

Three kits, one to six rigs. The only questions are which miner you run and how many of them fit the tank.

C1 tank beside its single-fan dry cooler

C1

Miners
1
Cooling capacity
6kW @ 35°C
Coolant volume
40L
Power
140W

Running
in the field.

C Series runs in homes and small sites across 40 countries. These three were posted by the people who built them, and the one from X opens there rather than playing here.

Heat reuse,
double return.

A miner's heat is only waste while it has nowhere to go. Under fluid it comes out in water, and water reaches a driveway, a greenhouse or a house.

Red hydronic tubing tied to the rebar of a walkway slab before the pour, house and woodpile behind
Snow melt under the driveway

“Why are you still shoveling snow? This Bitcoin mining heated snow melt system is running strong going into its second season.”

SOFTWARM LLC
A Fog Hashing tank and an indoor dry cooler inside a polycarbonate greenhouse, planting beds in front
A greenhouse at 9,000 feet

“Thermostatically controlled heated soil via the water loop from the heat exchanger.”

MOUNTAIN HASHER · C2
A Fog Hashing dry cooler on a pad against a clapboard house wall, copper flow and return lines below it
A Bitcoin boiler for the house

“This is a @foghashing Bitcoin boiler for 6 machines running on Braiins OS rated for 24kW or 81,000 BTU/hr.”

SOFTWARM LLC
Braiins · 2025

“Heat is a product – Not a problem”

That is the cover line of Bitcoin Mining Heat Reuse, 180 pages by Tyler Stevens on the thermodynamics of mining heat and the applications that can take it. Paul Jin Li, our founder and CEO, wrote the foreword.

Read the announcement
Three Braiins paperbacks on a wooden table, Bitcoin Mining Heat Reuse on top, its cover crediting Tyler Stevens as author and Paul Jin Li for the foreword

Get your miners immersed.