Are you looking to save money on your heating bill this winter? These systems are up to 97% efficient versus ~70% on traditional boilers. We install Navien systems - they invented the technology and their systems are extremely reliable. With a high-efficiency boiler system, you can expect about a 20-25 year lifespan and warranties are available. National Grid and Federal rebates are available with most high-efficiency systems. Give us a call today for details!