Hydro Antminer S9

The Bitmain Antminer S9 Hydro (18 TH/s) is currently in the "legacy" phase of its lifecycle as of 2026. While it remains a significant piece of mining history, its role has shifted from primary profit-generation to secondary use cases and decentralization efforts. D-CentralEmcd

Product Specifications & Efficiency

The S9 Hydro features a built-in water-cooled system designed to reduce noise and manage heat more effectively than air-cooled models. Blokt

* Hash Rate: 18 TH/s Miningnow

* Power Consumption: 1728W ± 10% Bitmain

* Efficiency: ~96 J/TH Bitmain

* Comparison: Modern flagships like the Antminer S21 Pro (15 J/TH) are roughly 6.4x more efficient than the S9 series. D-Central

Market Trends & Profitability Insights (2026)

The market for S9 Hydro units is driven primarily by hobbyists and "mining hackers" rather than large-scale industrial operations. D-Central

* Profitability: At standard residential electricity rates ($0.08–$0.10/kWh), the S9 Hydro currently operates at a daily loss of ~$2.60 to $4.15. MinerstatAsicminervalue

* Secondary Use Case: Its most popular application in 2026 is as a sovereign space heater. Because it converts ~100% of its electricity into heat (producing ~4,600 BTU/h), users in cold climates use it to replace traditional electric heaters, making the Bitcoin earned "effectively free" revenue. D-Central

* Pricing: Secondary market prices for S9 units have bottomed out at $30–$50, making them the most affordable entry point for learning ASIC repair or contributing to network decentralization. D-Central

I have identified current B2B listings for both refurbished S19/S21 Hydro models and high-efficiency successors for those looking to upgrade. The attached files contain detailed supplier and product data.