Located gas leak coming out of burner log. This indicates that the gas valve is not fully closing and allowing gas to escape when the unit is turned off. This is due to sediment in the gas that can cause various issues. Most municipalities code require a sediment trap to catch sediment and assist in preventing issues like this. Warranty - 90 day Craftsmanship warranty -1 year part warranty Performed blower and evaporator cleaning. Also installed gas valve and sediment trap. Upon completion we throughly tested the unit for functionality/leaks and found no issues. Unit in good working order upon departure.