The Bitmain Antminer T19 is the value-tier member of the S19 generation, offering miners access to the 7nm BM1398 chip platform at a lower price point than the S19 or S19 Pro. Delivering 84 TH/s at 3,150W, the T19 achieves an efficiency of 37.5 J/TH — less efficient than its “S” siblings but still a significant improvement over the S17 generation. Released in June 2020, the T19 provided an accessible entry point for miners upgrading from S9 or S17 hardware.
True to Bitmain’s naming convention, the “T” designation indicates a budget variant using chips that did not meet the higher binning standards of the S19 or S19 Pro. Despite its lower hashrate, the T19 shares the same robust physical chassis, 4-fan cooling system, and integrated APW12 power supply as the rest of the S19 family. This means it benefits from the same proven reliability and extensive parts availability that has made the S19 platform one of the most trusted in Bitcoin mining.
In 2026, the T19 occupies a sweet spot for budget-conscious miners: it is available at very low secondary market prices, consumes slightly less power than the S19/S19 Pro (3,150W vs 3,250W), and still produces meaningful hashrate and heat output. For space heater conversions and budget mining setups, the T19 delivers strong value. D-Central Technologies provides full repair and conversion services for the T19 platform.
Antminer T19 Full Specifications
| Specification | Details |
|---|---|
| Manufacturer | Bitmain |
| Model | Antminer T19 |
| Release Date | June 2020 |
| Algorithm | SHA-256 |
| Hashrate | 84 TH/s (±5%) |
| Power Consumption | 3,150W (±5%) |
| Efficiency | 37.5 J/TH |
| Input Voltage | 200–277V AC |
| Dimensions | 400 × 195 × 290 mm |
| Weight | 14.2 kg |
| Noise Level | ~75 dB |
| Operating Temperature | 5–40°C |
| Humidity | 10–90% |
| Cooling | 4 × high-speed fans |
| Network Connection | Ethernet (RJ45) |
| ASIC Chip | BM1398 (7nm) |
| Chips per Hashboard | 76 |
| Number of Hashboards | 3 |
| Total Chip Count | 228 |
| Power Supply | Integrated APW12 PSU |
Performance Analysis
At 37.5 J/TH, the T19 is roughly 10% less efficient than the base S19 (34.2 J/TH) and 27% less efficient than the S19 Pro (29.5 J/TH). However, it significantly outperforms the T17 (55 J/TH) and the entire S9 family (93-96 J/TH). Compared to the S21 (17.5 J/TH), the T19 uses approximately 2.1 times more energy per terahash.
The T19’s advantage is price: on the secondary market, it typically costs 15-25% less than the S19 and significantly less than the S19 Pro. For miners where capital cost is the primary constraint (rather than electricity cost), the T19 maximizes hashrate per dollar of hardware investment.
Daily and Monthly Power Costs
| Electricity Rate | Daily Power Cost | Monthly Power Cost | Viability |
|---|---|---|---|
| $0.05/kWh | $3.78 | $113 | Profitable — decent margins at low electricity rates |
| $0.08/kWh | $6.05 | $181 | Breakeven to marginally profitable — monitor closely |
| $0.10/kWh | $7.56 | $227 | Tight margins — best as a dual-purpose space heater |
| $0.12/kWh | $9.07 | $272 | Unprofitable — space heater conversion or undervolting needed |
Heat Output
The T19 produces approximately 10,748 BTU/h of heat (3,150W × 3.412 BTU/W). This is slightly less than the S19/S19 Pro (~11,089 BTU/h) but still represents very significant heating capacity — equivalent to a large space heater. For Canadian and northern-climate miners, this heat output makes the T19 an effective Bitcoin space heater during winter months.
Compatible Firmware
| Firmware | Compatibility | Key Features |
|---|---|---|
| Stock (Bitmain) | Full support | Default firmware, basic configuration |
| Braiins OS+ | Supported | Autotuning, Stratum V2, power capping |
| Vnish | Supported | Custom profiles, overclocking, immersion mode |
| LuxOS | Supported | Curtailment, fleet management |
For installation: Braiins OS+ | Vnish | LuxOS | Firmware Update Guide
Best Use Cases in 2026
Budget Home Mining: The T19 offers the lowest entry cost to the S19-generation platform. For home miners who want reliable 7nm hardware without paying S19 Pro premiums, the T19 delivers excellent value. Its proven reliability and wide firmware support make it a safe choice.
Space Heater Conversion: At ~10,750 BTU/h, the T19 provides powerful heating capacity. Its slightly lower power draw compared to the S19/S19 Pro (3,150W vs 3,250W) makes it marginally easier on electrical circuits. D-Central offers Bitcoin Space Heater conversions.
Undervolting Project: The T19 responds well to undervolting via Braiins OS+ or Vnish. Reducing power to ~2,400W while maintaining 65-75 TH/s can significantly improve efficiency. See our Complete Undervolting Guide.
Learning Platform: The T19 uses the same chassis, PSU, and firmware ecosystem as the S19 and S19 Pro. Skills learned on the T19 transfer directly to higher-value hardware.
Common Issues & Repair
The T19 shares its reliability profile with the S19 family:
- Hashboard ASIC chip failures: BM1398 chips can fail over time. Symptoms include reduced hashrate or missing chains. See our Chain X Only Fix Guide.
- APW12 PSU issues: The integrated power supply can develop capacitor degradation after years of continuous operation. See our APW12 PSU Repair Guide.
- Temperature protection triggers: Blocked airflow, failed fans, or degraded thermal interface material can cause over-temperature shutdowns. See our Temp Too High Fix Guide.
- Fan bearing wear: After years of 24/7 operation, fan bearings degrade. Replace fans at the first sign of grinding noise or vibration.
D-Central offers professional Antminer T19 Repair services from our Canadian workshop. See our ASIC Repair Cost Estimator for pricing.
D-Central Services for the Antminer T19
- Repair: Hashboard, PSU, control board, fan repair — Antminer T19 Repair
- PSU Service: APW12 diagnostics and repair — APW12 PSU Guide
- Space Heater Conversion: Home heating setup — Bitcoin Space Heaters
- Undervolting: Optimize power and efficiency — Undervolting Guide
- Replacement Parts: Hashboards, fans, PSU components — Shop Parts
- Repair Cost Estimate: ASIC Repair Cost Estimator
Frequently Asked Questions
Is the Antminer T19 still profitable in 2026?
The T19 is marginally profitable at electricity rates below $0.07/kWh. At higher rates, undervolting with aftermarket firmware can extend profitability. As a space heater, the T19 is cost-effective during heating season at any electricity rate since you are paying for heat regardless.
How much electricity does the Antminer T19 use per day?
The T19 consumes approximately 3,150W continuously, translating to 75.6 kWh per day or about 2,268 kWh per month. At $0.10/kWh, that is $7.56/day or $227/month. Undervolting can reduce consumption to approximately 2,400W (57.6 kWh/day).
Can the Antminer T19 be used as a space heater?
Yes — the T19 outputs approximately 10,748 BTU/h, making it a powerful heater. D-Central offers space heater conversions for the T19.
What is the difference between the T19 and S19?
The S19 delivers 95 TH/s at 3,250W (34.2 J/TH), while the T19 delivers 84 TH/s at 3,150W (37.5 J/TH). The S19 is ~9% more efficient per terahash. Both use the same BM1398 chip, chassis, and APW12 PSU. The T19 typically costs 15-25% less on the secondary market, making it the better value for capital-constrained miners.
What power outlet does the T19 require?
The T19 requires a 200-277V AC power outlet. Standard 120V household outlets are not sufficient. Most North American installations use a NEMA 6-20 or NEMA 6-30 outlet on a dedicated 20A or 30A circuit. See our Space Heater Electrical Guide for wiring details.