Burnham Carefree™ Boiler Burnham's Carefree boiler offers 100% efficient electric heat in an attractive wall-mounted unit. The Carefree boiler combines the convenience of electric heat with the comfort that only a hydronic system can provide, for those instances where oil or gas prove to be impractical.   Key Features  Electric    Water Only   Cast-Iron Sectional Design   41 To 68 MBH Capacity       Product Information   Literature (pdf)   Features & Benefits (pdf)   Ratings (pdf) Installation Manual (pdf)   Repair Parts   New Product Warranty (pdf)     (Download Adobe Reader to view PDF documents)