Canaan Avalon Nano 3S: Humble Heater Gets a Hashrate Upgrade

Back in Q2-2024, Canaan Inc. (NASDAQ: CAN) introduced its lineup of consumer-grade mining hardware with the Avalon Nano 3.

The Avalon Nano 3 warmed homes and hearts while hashing away for the Bitcoin network. It was small, quiet, and charming. Fast forward to 2025, and Canaan has returned with an upgraded plug-and-play hash heater: the Avalon Nano 3S.

Find out what sets the Nano 3S apart, how it performs, and why it might be the entry-level Bitcoin mining machine for you.

🛠️ A Power-up in Performance

The Avalon Nano 3S builds on the success of its predecessor while addressing user feedback. The original Nano 3 offered a hashrate of 4 TH/s and a seamless plug-and-play setup. The Nano 3S boosts that hashrate to 6 TH/s, a 50% increase with the same 140W power draw and form factor: a quiet, compact miner for hobbyists who want to stack sats.

🧰 Setup: Still a Breeze

Like the Nano 3, the 3S keeps the user experience front and center. Setup remains virtually identical:

1. Plug in the USB-C power cable.
2. Connect to the device through the Avalon Family App.
3. Configure your pool connection.
4. Choose your desired power mode, and you're off to the races.

🔥Hash Heat

Performance-wise, the Nano 3S is a clear step forward, offering multi-mode settings:

While not designed to heat an entire home, the 3S can warm a small room or home office comfortably, particularly in Medium and High modes. The temperature-controlled fan keeps noise low without compromising hashrate production.

Like its predecessor, the Nano 3S’s form factor doubles as a personal heater. Set it on your desk in the winter months and you’ve got a steady, warm breeze of SHA-256 in the air. Unlike industrial mining machines (which often require noise isolation or dedicated ventilation), the Nano 3S was designed for rooms, not racks.

This dual functionality turns heating your home into a bitcoin mining stream, currently earning ~300 satoshi's per day. While this won't move any needle, it may reduce your heating bill ever so slightly.

🧮 ROI, But Not the Way You Think

If you’re reading this for ROI projections, here’s the truth: this isn’t a profit play. At ~$249 and ~140W, you’re not competing with professional mining companies. But that’s not the point. The Nano 3S is about participation — running your own hardware, verifying your own hashes, and stacking non-KYC sats at a steady pace.

In terms of ROI, the Nano 3S is modest. But in terms of education, decentralization, and self-sovereignty, the value is immense.

🔌 Who Is the Nano 3S For?

• First-time miners who want a frictionless way to join the network.
• Educators or developers looking for real-world interaction with mining.
• Home miners who want to keep mining decentralized.
• Bitcoin enthusiasts teaching their loved ones about SHA-256.

In an era where industrial scale mining is the norm, the Nano 3S is a gentle reminder that home mining is still alive (and cozy).

Conclusion

The Avalon Nano 3S takes the baton from its well-loved predecessor and runs with it. Whether you’re mining out of curiosity, ideology, or just looking for a cozy sidekick to your desk setup, this device delivers. It’s an excellent mix of form and function — a quiet hash heater.

Canaan is flipping the narrative on wasted heat. Home miners everywhere are finding creative, sustainable ways to repurpose heat from their rigs — and they want to see yours.

Share how you re-use your mining heat and tag @canaanio with #CanaanHeatFlipChallenge for a chance to win exclusive Canaan prizes. Enter your submissions here.

Happy Hashing!