This oil furnace model is made for solid performance. And with sizes at 39.25" tall or less, its "Low Boy" design fits beautifully in low clearance installion spaces like attics. Backed by a lifetime heat exchanger limited warranty1 and the exceptional Carrier standard warranty you'll enjoy years of performance from this reliable unit. 1 To the original owner, when product is used in an owner-occupied residence, a Lifetime heat exchanger parts limited warranty upon timely registration of your new equipment. Warranty period is reduced to 20-years (from Lifetime) on heat exchanger if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive the extended registered heat exchanger parts limited warranty period. See warranty certificate for details.