The MT15000 is designed for extended use, but whether it is suitable for chain vaping depends on several factors. It features an advanced cooling system and efficient coil design, which helps maintain consistent flavor and vapor production. However, frequent and continuous use can lead to coil degradation and a decrease in overall performance. If you prefer chain vaping, it's best to take short breaks between puffs to allow the device to cool down and extend its lifespan. Additionally, monitoring the e-liquid level and battery life ensures optimal performance.