S9 140mm Fan Adapter: Upgrade Your Antminer S9 for $7.99
Stock Antminer S9 fans are loud, small, and punishing to anyone within earshot. The right S9 140mm fan adapter lets you mount quieter, larger fans without buying a full enclosure kit or spending $170 CAD on parts you don’t need.
Table of Contents
- What Is the S9 140mm Fan Adapter
- Why CryptoCloaks
- S9 140mm Fan Adapter: Specs and Compatibility
- How It Compares
- FAQ
What Is the S9 140mm Fan Adapter
The Bitcoin Space Heater 140mm Fan Adapter v2 is a precision 3D printed adapter that bridges the Antminer S9’s native 120mm fan mounts to standard 140mm fans. Each order ships with two adapters, matching the S9’s dual-fan layout at intake and exhaust.
The S9 leaves the factory with 120mm fans spinning at brutal RPMs to compensate for their limited blade area. Larger 140mm fans move the same air volume at significantly lower speeds. This S9 140mm fan adapter makes that swap a direct bolt-on with no drilling, no fabrication, and no permanent modifications to your miner.
This is not a full space heater kit. It is the exact component you need and nothing more. If your goal is quieter operation through larger fans, this adapter handles it at $7.99 per pair.
Why CryptoCloaks
CryptoCloaks has been in the bitcoin hardware space since 2017. Ricky personally picks, prints, and ships every order from his shop in America. This is not a dropship operation, and it is not an eBay reseller flipping generic files with no accountability and no support line.
Before releasing this S9 140mm fan adapter, CryptoCloaks published a full fan testing data sheet comparing multiple fan combinations across airflow rates, noise levels, and RPMs. Buyers know exactly what they are getting before the order ships. No competitor at this price point offers that. eBay resellers selling similar adapters provide zero testing data and zero direct support.
If you need to push airflow through a full duct setup beyond just the fan swap, pair this adapter with the Antminer Dual 120mm to 8-inch Duct Adapter for a complete airflow management solution on your S9.
S9 140mm Fan Adapter: Specs and Compatibility
- Compatible Miner: Antminer S9
- Input Fan Size: 120mm (S9 native mount)
- Output Fan Size: 140mm
- Quantity per Order: 2 adapters (covers both fan positions)
- Material: PETG
- Weight: 2 oz
- Colors Available: Orange, Black, White, Yellow
- Price: $7.99
- SKU: CC-MA-BITCSPACHEAT
PETG is the correct material choice for ASIC environments. PLA softens and warps above 60°C, which is well within range of an S9 running at load in a warm room. PETG holds its shape reliably past that threshold, making this S9 140mm fan adapter durable under the sustained heat conditions that mining hardware generates daily.
This adapter works with any standard 140mm fan using a 140mm bolt pattern. The Noctua NF-A14 140mm fan is widely used in quiet S9 builds and mounts cleanly to this adapter. Four color options are available at the same $7.99 price: Orange, Black, White, and Yellow.
How It Compares
| Feature | CryptoCloaks S9 140mm Fan Adapter | Competitors |
|---|---|---|
| Price | $7.99 | $170+ CAD (D-Central full kit) |
| Material | PETG (heat-resistant) | Unknown / PLA common |
| Fan Testing Data Included | Yes, full data sheet published | No |
| Color Options | 4 (Orange, Black, White, Yellow) | None |
| Sold as Standalone Adapter | Yes | Bundled only (D-Central kits, Amazon box) |
D-Central sells a BitChimney DIY Kit and an Amazon S9 Space Heater Box, both bundled at $170 CAD and above. If all you need is the S9 140mm fan adapter to run larger fans, paying 20x more for components you don’t need is simply wasteful. Additionally, the Amazon listing offers no color customization, carries typical marketplace markup, and ships with no performance data behind it.
Frequently Asked Questions
Which 140mm fans work best with the S9 using this adapter?
The Noctua NF-A14 PWM is the most tested and community-validated option for the S9 140mm fan adapter setup. It runs quietly at lower RPMs while moving enough air to keep S9 hash boards within safe operating temperatures. CryptoCloaks published a full fan data sheet covering multiple fan combinations, including airflow rates and noise levels at different duty cycles. Review that data sheet before committing to a fan so your expectations match real-world results. Other 140mm fans with a standard bolt pattern will physically fit this adapter. However, not every 140mm fan moves adequate air at low RPMs to cool an S9 under load. Prioritize fans rated for high CFM at mid-range RPMs rather than ultra-low RPM fans designed for silent PC builds, which may not keep pace with ASIC heat output.
Do I need one or two adapters for my Antminer S9?
You need two. The Antminer S9 has two fan positions: one at the intake side and one at the exhaust side. Each order of this S9 140mm fan adapter includes two adapters, which directly matches the S9’s dual-fan layout. You will not need to purchase a second set. CryptoCloaks sized the order quantity around the actual hardware requirement so you never end up with a single adapter and a half-finished mod. Install one adapter at each fan position, mount your chosen 140mm fans, secure with standard M4 screws, and the job is done. The full swap takes under 20 minutes with basic tools and no previous hardware modification experience required.
Will a 140mm Noctua fan fit this adapter and actually reduce noise?
Yes on both counts. The Noctua NF-A14 mounts directly to this S9 140mm fan adapter using the standard 140mm bolt pattern with no modification. Noise reduction is real and measurable. Stock S9 fans spin at high RPMs to compensate for their 120mm diameter limitation. A 140mm fan moves the same air volume at lower RPMs because the blade sweep area is larger. Lower RPMs produce less noise. CryptoCloaks tested this specifically and published the results. The tradeoff is that 140mm fans spin slower by design, and some users increase PWM duty cycles during peak load periods. In a home mining or bitcoin space heater setup, the noise reduction versus stock fans is substantial and noticeable from across the room even at elevated load settings.
Pick your color, add two adapters to your cart, and run your S9 at a volume your household can tolerate. Bitcoin accepted. Made in America. Ships in 2-3 business days.
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