Home Miners SHA-256 NerdQAxe+ open-board reference Calculate Electricity Cost Can the NerdQAxe+ open-board reference heat my home? The NerdQAxe+ open-board reference outputs approximately 188 BTU/hr of heat. For reference, a typical space heater produces 5,000-5,500 BTU/hr. All electrical energy consumed by the miner is converted to heat, making it 100% efficient as a heater. D-Central offers Bitcoin Space Heater builds designed specifically for home heating integration. What power supply does the NerdQAxe+ open-board reference need? The NerdQAxe+ open-board reference draws 55W of power. You need a power supply rated for at least 61W with appropriate voltage (200-240V AC). D-Central stocks compatible power supplies in our shop. Always use a quality PSU from a reputable manufacturer to protect the miner and wiring.