This is the third Drolet and the second HT3000 in the last 3 years. All three still working on different buildings. Excellent stoves, 8- 10 hour burns, no chimney deposits if you use dry wood and run at low burns, not smoldering. One heats a 2600 sq ft building. One a 1600 sq. Ft with 17 ft ceiling. Great stoves, well built.