We are 3 years with a pellet and will never go back to wood, sooo much easier. We have even added another at the other end of our large home. If we could have an outdoor burner we would but it is not allowed in our area. We have it cold here in Maine and we have only used 236$ worth of oil in 3 years. We have burned 880$ worth of pellets in 3 years. We barely notice an electric change. Our battery backup will go for 10 hours.