The new Ultra commercial boiler line from Weil-McLain Canada offer efficiency ratings up to 94.7 percent AFUE and up to three different temperatures. It is available in two model sizes – 550 and 750 -- and is designed for easy installation. Features include standard “U-Control” that includes such benefits as 11 pre-set applications, fully integrated multiple boiler control and real text LCD display. They feature direct vent or direct exhaust options, with 20 to 100 percent modulation. All come complete with standard safety controls mounted and wired, including manual reset high limit, LWCO, and high and low gas pressure switches.