Refund policy

Refund and Return Policy

At Calvin Rig, we specialize in high-performance Bitcoin mining hardware. Due to the specialized nature of ASIC mining equipment and the high volatility of the cryptocurrency market, our policy is designed to be fair, transparent, and strictly enforced to protect both our business and our community of miners.

1. Quality Assurance & Pre-Shipment Verification

To guarantee that you receive a fully functional Bitcoin solo miner, we implement a strict Pre-Shipment Verification process based on your selected edition:

  • 🔹 Standard Edition: Before dispatch, the hardware is powered on to verify operational status.
  • 👑 Premium Edition: The hardware undergoes a full stress test to ensure it reaches the advertised hashrate (e.g., 12 TH/s). Our technicians will pre-configure the device with a wallet placeholder (ready for you to update with your own BTC wallet address) and up to two specific Mining Pools. Orders are only dispatched once this verification is documented.
  • 💎 Diamond Lite & Diamond Edition: Same rigorous verification as above. Diamond Lite follows the Standard setup process; Diamond follows the Premium setup process, with the added benefit of 180-Day Local Unit Replacement coverage (see Section 4).

2. 14-Day Return Policy for Unopened Items

We accept returns within 14 days of delivery under strict conditions. Given the sensitive nature of computing hardware:

  • Condition: The item must remain strictly unopened, with the original factory seals and packaging intact.
    ⚠️ Note on Customs Inspections: International shipments may be subject to random opening and inspection by customs authorities. If your package arrives with the "VOID" seal broken, but shows evidence of customs re-sealing or courier handling, this does not constitute a "used" or "opened" item by Calvin Rig.
  • Restocking Fee: A 25% restocking and administrative fee will be deducted from the refund amount.
  • Shipping Costs: The buyer is responsible for all return shipping costs. Original shipping charges are non-refundable.
  • Customs Abandonment Policy: For DDP regions, we cover all duties and taxes as part of delivery. For non-DDP regions, if a package is returned or destroyed because the buyer refuses to pay local import taxes, this does not qualify for a refund, as import compliance in non-DDP regions remains the buyer's responsibility.

3. Dead on Arrival (DOA) & Shipping Damage

Every unit is verified via video before dispatch; therefore, any DOA issue is typically related to transit damage.

  • Reporting: You must report any damage to support@calvinrig.com within 48 hours of receipt.
  • Evidence: Please provide your order number along with photo/video evidence of the hardware defect and the damaged packaging.
  • Resolution: Once verified, we will arrange for a replacement or repair. The buyer covers return shipping to us; we cover the shipping cost of the replacement unit back to you.

4. Limited Hardware Warranty (Edition & Model Dependent)

We provide limited hardware warranties for our physical computing nodes. The exact duration and service approach depend on the specific product model and the Edition (Standard, Premium, Diamond Lite, or Diamond) selected at the time of purchase. Please refer to our Warranty & Support page for full coverage details and model eligibility.

  • 🔹 Standard & 👑 Premium (Repair): 3-Month Local Warranty (USA, Germany, HK). Covers labor and diagnostic fees for manufacturer defects under normal operating conditions. Replacement parts (e.g., ASIC chips, control boards, screens, or fans) are invoiced separately unless covered under the manufacturer's original factory warranty. Customers are responsible for shipping the unit to our local service center; we cover return shipping once repaired.
  • 💎 Diamond Lite & Diamond (Replacement): 180-Day Local Unit Replacement (USA, Dubai, HK), available on select flagship models. If a genuine, non-human-induced fault is confirmed within 180 days, we ship you a replacement unit at no additional cost. You are responsible for shipping the faulty unit to the nearest service point; we cover the cost of shipping your replacement back, anywhere in the world.
  • Exclusions: The warranty is strictly voided by overclocking, custom firmware, improper power supply, physical/water damage, or unauthorized disassembly.

5. Technical Support & Setup Assistance

We want your mining journey to be successful. Every purchase includes access to our technical support, regardless of edition. If you encounter difficulties setting up your Bitcoin Solo Miner, we offer remote consultations to ensure your equipment is hashing correctly.

6. Lost or Stolen Packages

All international orders include end-to-end tracking. For DDP orders, we cover all duties and taxes as part of delivery. If a package is confirmed lost by the carrier, we will arrange for a replacement unit to be sent.

7. Delivery & Post-Delivery Responsibility

Parcels are delivered without a mandatory signature requirement. Once the carrier marks your order as delivered, responsibility for the package transfers to the recipient. Calvin Rig Technology is not liable for parcels reported missing after confirmed delivery. We recommend ensuring someone is available at the time of delivery or specifying a safe drop-off location in your order notes.

8. Chargeback & Dispute Policy

We are committed to resolving all technical issues through our support channels. Initiating a bank chargeback without prior communication is considered "friendly fraud" and a violation of our Terms of Service. We will vigorously dispute unwarranted chargebacks by providing your specific pre-shipment verification videos, delivery logs, and IP data to the payment processors.