Definition
District heating is a system that distributes thermal energy from one or more central sources to many buildings through a network of insulated pipes carrying hot water. Rather than each building running its own boiler, heat is generated or recovered at scale and piped to homes, offices, and industry as space heating and hot water. This centralization is what lets low-grade waste heat, too diffuse for any single building to use, be aggregated into a viable energy product.
Why it pairs with recovered heat
District networks are the most common destination for recycled low-grade waste heat because they can absorb large, continuous thermal flows. Heat from a data center or mining facility is fed into the network through a heat exchanger, usually after a heat pump lifts the temperature to the 60-75 degrees Celsius that the grid requires. Stockholm is the standout example, with around 30 data-center sites plugged into its district heating system.
The mining connection
Because an ASIC converts nearly all its input power to heat, a Bitcoin mining operation sited near a district network can sell or offset heat that it would otherwise vent. This reframes mining as combined hashing and heating: the same electricity earns block rewards and displaces fossil-fired boiler fuel for the community. Coupling a Hashcenter to a district loop is one of the clearest paths to turning thermal waste into recurring revenue, though it depends on network proximity and the upfront cost of exchangers, pumps, and piping.
The upstream capture process is detailed in Waste Heat Recovery, and the interface hardware appears under Heat Exchanger.
Estimate displaced heating in the heat-savings calculator.
In Simple Terms
District heating is a system that distributes thermal energy from one or more central sources to many buildings through a network of insulated pipes carrying…