Weil McLain 140K BTU cast iron boiler (heavy), Bradford White boiler fed water heater, Taco controller for 3 zones, and I'll throw in 3 taco circulation pumps. It all works. I removed it for a remodel. The boiler is configured for natural gas. I do not know if it can be converted to propane. The boiler weighs 200+ pounds. It's heading to the scrap yard in a week if it doesn't sell.