Does Nuki Sell Refurbished?
No. Nuki does not have a refurbished or outlet program. Unlike Apple or Dyson, there's no official "Nuki Refurbished" store where you can buy inspected, certified used devices at a discount.
Nuki has confirmed they have no plans to introduce refurbished sales. Returned products are not re-sold to consumers. This means every "refurbished" Nuki you see online is being sold by a third party — with no Nuki quality checks.
Some Amazon sellers label products as "Renewed" or "Refurbished" — these are not Nuki-certified. They're returned items resold by third-party sellers, and the quality varies wildly.
Buying Used Nuki — Risks
The biggest risk with a used Nuki is the battery. Nuki's rechargeable battery pack degrades over time. A 2-year-old lock might only hold 60-70% of its original capacity, meaning you'll be charging it every 4-6 months instead of yearly.
Firmware is another concern. If the previous owner didn't update the firmware, you might receive a lock running outdated software. While you can update it yourself, some very old firmware versions require a factory reset, which erases all configuration.
Warranty is perhaps the most critical issue. Nuki's 2-year warranty is tied to the original purchase date, not the date you buy it used. A 1.5-year-old used lock gives you only 6 months of remaining warranty.
Finally, there's the cylinder compatibility question. The previous owner may have used the lock with a different cylinder type. Make sure your door uses a standard euro-profile cylinder — otherwise you'll need to buy a new one (€30-80).
Where to Find Used Nuki
eBay is the most common marketplace for used Nuki locks. Prices typically range from €120-180 for a Smart Lock Pro, depending on generation and condition. Always check the listing for the exact model and generation — the 3rd Gen and 4th Gen look similar but have significant feature differences.
Facebook Marketplace and local classified sites (Gumtree, Craigslist) sometimes have listings, but these are harder to verify and offer less buyer protection.
Amazon Warehouse Deals occasionally list Nuki products at 20-30% off. These are returned items in "like new" or "very good" condition, and Amazon handles returns if there's an issue.
Better Alternative: 10% Off New
A new Smart Lock Pro with the 10% referral discount costs €242.10. A used one on eBay averages €150. The €92 difference buys you: full 2-year warranty, fresh battery, latest firmware, Nuki Club membership, and complete peace of mind.
When you factor in the risk of receiving a degraded battery (replacement cost: €39) or needing a new cylinder (€30-80), the used option's savings evaporate quickly.
Our recommendation: buy new with the referral code. The 10% discount makes the price-to-risk ratio strongly favor a new purchase. If saving money is the priority, wait for Black Friday instead of buying used.