Even though I haven't used the Drolet HT-3000 much yet, only a couple of burns, I'm very impressed with the construction and build quality. Let's just say this thing is HEAVY! This is my second Drolet product. I installed a Drolet 1800 insert at my last house and was said to leave it behind. The thing ran flawlessly for years and it was our primary heat source pretty much running 24/7. I'm assuming this one will do the same.