new to me house has this fireplace. can anybody tell me anything specific about it? how much can i expect it to supplement the oil burner? it has vents inside the bottom that i am hoping pull air from outside to feed fire. located in a central room with stairs to second floor and adjacent to vaulted ceiling living room with loft to second floor. previous owner stated they used it once or twice a year. this looks to be accurate as there is no heat tarnishing or creosote buildup. since it is original to the 25 year old house, should i get it inspected even though it has no use? i dont know how well you can see in the pictures, but the outside metal is kind of rusty. thanks in advance!