Grain Mill Warranties and What to Check Before You Buy
Updated 2026-11-04
A mill is a long-term purchase with a motor and wearing parts. Warranty terms vary by more than almost any other spec, which makes them a useful way to compare.
Warranty terms as published
| Mill | Term stated by the maker | Note |
|---|---|---|
| Mockmill Lino 100 | 12 years, private use | 2 years for commercial use |
| Mockmill 100 and 200 | 6 years | Non-commercial use |
| NutriMill Impact | 5 years on manufacturing defects | Limited lifetime on motor and milling heads |
| NutriMill Harvest | 5 years on manufacturing defects | No lifetime term stated |
WonderMill is widely reported to carry a limited lifetime warranty, but we could not reach its site to confirm that.
Questions to ask before you buy
- Is the seller authorized? A warranty may depend on buying from an authorized seller. On Amazon, check who the seller actually is, then confirm with the maker if you are unsure.
- What does "lifetime" cover? Limited lifetime usually means specific parts under specific conditions. Read the terms.
- Are replacement stones or heads sold? Find out what parts cost before you need them.
- Who pays return shipping? A 15-pound mill costs real money to ship.
- Does non-US power or commercial use void it? Terms often differ. Mockmill's differ by use type.
Check what you will mill
Also check the grains allowed. NutriMill's pages specify non-oily grains and legumes, and milling something a maker excludes could put your coverage at risk. If you want to mill flax or other oily seeds, look for a mill that explicitly allows them.
Keep your paperwork
Save the order confirmation, a photo of the serial number and a PDF of the warranty terms on the day your mill arrives. Warranty pages change, and the terms that apply are the ones in force when you bought.
Compare the rest of the specs in the full table.