Protected. Verified. Guaranteed.
Your Miner
Protected
Always.
Every Bitmain Antminer from BitmainShop.us ships with comprehensive warranty coverage — backed by Bitmain’s manufacturer guarantee and our own in-house protection program.
365
Days
🔩Hardware defects & manufacturing faults✓
🔢Bitmain serial number authentication✓
🛡️Free replacement or full repair✓
📞Expert US-based technical support✓
Coverage Tiers
Three Tiers of
Protection
Whether you’re buying brand-new or certified pre-owned, your Bitmain Antminer is backed by warranty coverage matched to its condition and model year.
365
Days — New Miners
Full manufacturer warranty
90
Days — Certified Used
In-house warranty
30
Days — Budget/Legacy
Operational warranty
⭐ Gold Tier · New Miners
365
Days Coverage
Bitmain Manufacturer Warranty
Full Bitmain factory warranty for all brand-new Antminer units. Covers manufacturing defects from date of original shipment — not activation date.
✓All manufacturing defects
✓Hash board failures
✓Control board issues
✓Fan unit failures
✓Power supply defects
✓Free repair or replacement
✓Return shipping covered (US)
×Physical damage from operations
×Unauthorized firmware modifications
Applies to
S23 HYDS21 XP HydS21 Pro S21+S21 HydS21 200T T21S19 XP
🔧 Silver Tier · Certified Used
90
Days Coverage
BitmainShop.us In-House Warranty
Our in-house warranty for certified pre-owned and refurbished Antminers. Activates after 72 hours of stable operation. Every unit is pre-sale tested by our team.
✓Operational integrity warranty
✓Hash board performance defects
✓Fan failures under normal use
✓Control board issues
✓Free repair or comparable replacement
✓Bitmain serial verification included
×Physical damage / drop damage
×Water / liquid ingress damage
×Unauthorized overclocking damage
Applies to
S21 UsedS21 175T S19 XP UsedS19j Pro
💰 Blue Tier · Budget Units
30
Days Coverage
Operational Warranty
Operational warranty for legacy and budget-tier miners like the S9. Guarantees the unit will function as described at purchase. Ideal for entry-level miners learning the craft.
✓Unit operational on arrival
✓Hashrate within ±5% of spec
✓All fans functional
✓Control board operational
✓Replacement if DOA on delivery
×Component failures after 30 days
×Performance below market expectations
×Power supply unit (separate component)
Applies to
S9 13.5TS9 Budget Legacy Units
Coverage Details
What’s Covered
& What’s Not
Complete transparency on every item our warranty protects and the specific exclusions you should know before you mine.
🛡️
Covered Under Warranty
All of the following are repaired or replaced at no cost
Covered
✓
Manufacturing Defects
Any defect arising from the Bitmain production process — incorrect solder, faulty chip placement, substandard component quality, or assembly errors.
✓
Hash Board Failures
Hash board underperformance or complete failure not caused by external factors. Includes individual chip failures that reduce total hashrate below specification.
✓
Control Board Malfunctions
Issues with the control board including firmware boot failures, network connectivity problems, and configuration interface errors caused by hardware faults.
✓
Fan Unit Defects
Premature fan bearing failure, motor defects, or fan speed sensor failures occurring under normal operating conditions within the warranty period.
✓
Power Supply Defects (New Units)
For new miners, power supply failures caused by manufacturing defects are covered. Includes PSU shutdowns under rated load and voltage regulation failures.
✓
Dead on Arrival (DOA)
If a unit fails to power on or mine within 72 hours of receipt, it is treated as DOA and replaced immediately — regardless of tier. No questions asked.
✓
Thermal Management Issues
Abnormal operating temperatures under documented ambient conditions within spec range (0–45°C) caused by manufacturing defects in cooling system components.
⚠️
Not Covered by Warranty
These conditions void or are excluded from coverage
Excluded
✕
Physical or Mechanical Damage
Damage from drops, impacts, crushing, or any physical mishandling after delivery. Includes bent heat sinks, cracked cases, and damaged connectors.
✕
Liquid or Moisture Damage
Damage from water, condensation, cleaning fluid, or any liquid contact for air-cooled models. Hydro miners damaged by improper coolant installation or leaks are excluded.
✕
Unauthorized Modifications
Any hardware modification, unofficial firmware flashing, or overclocking beyond Bitmain-approved parameters that causes damage or voids the original manufacturer seal.
✕
Electrical Damage & Power Issues
Damage from power surges, incorrect voltage supply (non-220V+ for S21 models), inadequate PDU protection, or improper electrical installation at the mining site.
✕
Environmental Damage
Damage from operation outside rated temperature range, excessive dust accumulation without cleaning, corrosive atmospheres, or extreme humidity environments.
✕
Normal Wear & Performance Decline
Gradual hashrate decline due to chip aging, thermal paste degradation, or fan bearing wear that occurs after the warranty period — these are natural characteristics.
✕
Missing or Altered Serial Numbers
If the Bitmain serial number label has been removed, obscured, or altered, warranty coverage is immediately void. The serial number is essential for all warranty claims.
Claims Process
How to File
Your Claim
A straightforward, transparent process. Most claims are resolved within 5–10 business days.
1
Gather Your Information
Have your BitmainShop.us order number, the unit’s serial number, and a description of the issue ready. For hardware faults, a short video of the problem is helpful but not required.
📋 5 minutes
2
Submit Your Claim
Complete the claim form on this page or email warranty@bitmainshop.us with your order details. Our warranty team reviews all submissions within 4 business hours.
📧 4-hour response
3
Diagnosis & Verification
Our technical team verifies the serial number and evaluates the fault. If a physical inspection is needed, we provide a prepaid return shipping label for US customers.
🔍 1–3 business days
4
Repair or Replacement
Approved claims are resolved by repair or equivalent replacement unit, at our discretion. Replacement units undergo the same serial verification and testing process as original purchases.
🔧 3–7 business days
5
Return Shipping & Confirmation
Your repaired or replacement unit ships back to you with full tracking and insurance. You receive a new warranty certificate for the replaced unit.
🚚 Ships within 48h of approval
File a Warranty Claim
Complete the form below — we respond within 4 business hours.
Order Info
Issue
Contact
🛡️
Claim Submitted!
REF: WC-2026-XXXX
Our warranty team will review your claim and respond to your email within 4 business hours. Keep your reference number safe.
Track Claim StatusAuthentication
Verify Your
Serial Number
Every Bitmain Antminer sold by BitmainShop.us has its serial number cross-checked against Bitmain’s manufacturer database before shipping. Verify yours here.
🔢
Where to find your serial number
The serial number label is located on the top or side of your Antminer unit. It begins with a model-specific prefix (e.g. “RFARNA-” for S21 series) and is typically 20–24 characters long including the model code.
📦
Pre-shipment verification
BitmainShop.us verifies every serial number before dispatch. Your packing slip includes the verified serial number and our authentication timestamp. Both are referenced in any warranty claim.
Serial Number Lookup
Enter your Antminer serial number to check warranty status
✓ Serial Number Verified — Authentic Bitmain Unit
Status
Verified ✓
Model
—
Warranty
365 Days · Active
Ship Date
—
BitmainShop
Authenticated
Having trouble? Contact us at bitmainshop.us/contact with your order number and serial number for manual verification.
Extended Protection
Extend Your
Coverage
For miners building serious operations, our extended warranty plans provide peace of mind well beyond the standard period — at a fraction of replacement cost.
View Extended Plans →Silver Extension
Adds 6 months · New miners only
$149
Per unit
Gold Extension
Adds 12 months · All models
$249
Per unit
Platinum Plan
Adds 24 months · Includes priority service
$399
Per unit
Farm Fleet Plan
10+ units · Custom rate · Priority support
Custom
Contact us
Questions
Warranty FAQ
When does my warranty start?
+
For new miners, the 365-day Bitmain manufacturer warranty begins from the official ship date from our warehouse — not the date you activate or configure the miner. For certified used miners, the 90-day in-house warranty activates after 72 hours of stable operation.
How do I check my warranty expiration?
+
Enter your serial number in the verification tool on this page. Your warranty status, start date, and expiration date are displayed instantly. You can also email warranty@bitmainshop.us with your order number for a manual check.
Do I need to keep the original packaging?
+
We strongly recommend keeping the original Bitmain packaging for at least the full warranty period. If a unit needs to be returned, proper packaging reduces the risk of transit damage. If original packaging is unavailable, use heavy-duty foam padding with at least 4cm on all sides.
Can I void my warranty by flashing third-party firmware?
+
Yes. Installing unofficial firmware or firmware that enables overclocking beyond Bitmain’s rated parameters can void your warranty if it is determined to have caused the reported fault. Braiins OS and other professional mining firmware may be acceptable — contact us before flashing if you are concerned.
What happens if BitmainShop.us cannot repair my unit?
+
If a covered unit cannot be repaired within a reasonable timeframe, we will replace it with an equivalent or better model. If no comparable replacement is available, we may offer a store credit or partial refund proportional to the remaining warranty period. We will always communicate clearly before making a decision.
Is return shipping to BitmainShop.us free?
+
Yes — for all approved warranty claims from US customers, BitmainShop.us provides a prepaid FedEx or UPS return shipping label. You are responsible only for packaging the unit safely. International return shipping may incur a contribution fee depending on location.
How long does a warranty claim take to resolve?
+
Most claims are resolved within 5–10 business days: 1–3 days for claim review and diagnosis, 3–5 days for repair or sourcing a replacement, 2 days for shipping back to you. Priority service (Platinum plan) claims are resolved within 3–5 business days.
Does the warranty cover power surges at my facility?
+
No — damage from power surges, incorrect voltage, inadequate PDU protection, or electrical faults at your mining facility are not covered. We strongly recommend a high-quality PDU with surge protection and UPS backup for all ASIC mining operations, especially with S21 series miners requiring 220V+.
Can I transfer my warranty to a new owner?
+
Yes. BitmainShop.us warranty coverage follows the serial number, not the original purchaser. If you sell your miner, the remaining warranty transfers to the new owner automatically. The new owner should contact us with the order reference and new ownership details to update our records.
Still Need Help?
Our warranty team responds within 4 business hours, Monday to Saturday.
🛡️Up to 365-Day Warranty
🔢Serial # Verified
🔧Free Repair / Replacement
📦Prepaid Return Shipping
⚡4hr Response Time