Our furnace went out.  Would be $3,000 tp replace it.  We thought we would try this heater instead.  Like the idea of zone heating since we have 2 rooms that are not in use during the day. Prone to sinus infections  but none now.  It does not dry out the air and blow in polluted air and dust like a furnace.  Also it heats more evenly.  I bought a 2nd heater.   With one at one end of the house and the other  at the other end, it has now repaced our  $3,000 furnace.  We are staying cozy and warm and healthier.