Brand New Weil-McLain Boiler GV90+5 DOE Heating Capacity Max Input 140K BTU and max output of 130K BTU. This is a 91% efficient boiler that will vent out of the side of your home using pvc pipe. Net Capacity 140K BTU. Direct vent. Dual Heat Exchangers. A primary cast-iron heat exchanger with tremendous durability and a secondary heat exchanger made from stainless steel to resist corrosion. Both heat exchangers feature multipass to extract the heat. Dual circulators allow the GV90+ to accept low temperature return water that would damage other boilers. A couple dents in the cabinet but otherwise it’s in new condition. Never lifted off its pallet. Purchased to use on large older home but decided to go a different route. All paperwork - manuals, installation guide, etc is included. Weight is approx 425 lbs. This is a boiler that retails for over $4000 plus shipping. I had purchased for a project, but did not use.