425,000 BTU FTXL Fire Tube High Efficiency Boiler, M13 (Natural Gas)

Heating equipment must be installed, commissioned, and serviced by a licensed and qualified professional in accordance with manufacturer instructions, applicable codes, and industry standards. Manufacturers do not accept warranty or technical support requests from homeowners or unlicensed individuals. All warranty and technical inquiries must be initiated by the licensed professional responsible for the installation.

Rebates:
You may be eligible for rebates from your local utility company and state. Search your zip code in the link below for information about rebate programs that apply to you. Lochinvar Rebate Center

Note: Product Title reflects this boiler's IBR Net Output Rating.

The FTXL boiler is the new 98% efficiency standard in fire tube technology, and it puts remote connectivity at your fingertips. The FTXL boiler also has a compact footprint of just 6.2 sq. ft. FTXL boilers have a top-mounted, micrometal fiber burner, with a blower/gas valve assembly that drives heat energy downward, through stainless steel fire tubes, with exhaust venting through the bottom of the unit. With up to 10:1 modulation turndown, the burner automatically changes its firing rate as building heat loads vary. An FTX500 fires at its maximum 500,000 Btu/hr rate when heat load is highest, then gradually "turns down" to as low as 10% (50,000 Btu/hr) as load decreases. A modulating system runs smoothly and efficiently, without frequent on/off cycling.