Our client had a 30+ year old failing gas boiler and a rotted out gas water heater. We prefabricated a new Navien high efficient gas combination heating boiler and tankless water heater at our shop. Brought it out mostly assembled. Removed his old system. Mounted the new high efficient Navien unit to the wall and made the final connections. In and running 1 day. This client got a $2,400 rebate from gasnetworks and got a 0% interest 7 year loan from MassSave.
