Model #usa090NH3RSerial #990512072Heat exchangerPart #4224303I know this company went out of business a while ago, but I'm looking for a heat exchanger for the above model. Any help would be appreciated at locating this part. Thank you.
Your best chance is to contact a local, large and reputable HVAC firm. They may have been a one time dealer or have the wholesale books from their suppliers that MAY have this kind of heat exchanger still in stock. Frankly, based on my trade experience, it is often cheaper to have another furnace installed than put in retired technology in a piece of equipment no longer supported.