Due to the nature of these products there’s no warranty. Mechanical Mods are for experienced vapers, that are aware of how to use unregulated devices. It requires technical knowledge in order to use properly. Before purchasing a mech mod we suggest you looking at our mech mod Blog or our videos. Feel free to call and speak to vape technician This is because 1. You contacts must be properly adjusted to make sure you mod is working properly 2. Contacts must be cleaned if you’re not getting a strong hit 3. Must make sure mod is locked so it doesn’t auto fire 4. Whatever RDA or Tank you’re using must make sure you’re using the right type of battery. 5. Need to be aware of voltage level in battery if battery is exhausted you run the risk of messing up your mod.