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Complete Weil Mclain Lgb15, 1820 Mbh Input, 5" W.c. - Commercial Gas Boiler - Steam Or Water Pro Version [T6pkg9xS]

$168.99 $540.99 -69%

1820 MBH Input, 5" W.C. - Commercial Gas Boiler - Steam or Water85.1% Combustion efficiency saves energy. The LGB is the highest efficiency cast iron atmospheric gas boiler available. Exceeds efficiency requirements of ASHRAE 90.1Cast iron sections f

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1820 MBH Input, 5" W.C. - Commercial Gas Boiler - Steam or Water

  • 85.1% Combustion efficiency saves energy. The LGB is the highest efficiency cast iron atmospheric gas boiler available. Exceeds efficiency requirements of ASHRAE 90.1
  • Cast iron sections for corrosion resistance and long life
  • Compact design saves valuable space only 50-3/8" high, allowing more headroom for piping and venting
  • Patented section sealing method, short draw rods and sealing rope section speed assembly to reduce installation time
  • Extra-large 9" top port opening forms an internal header for better water circulation. Large steaming area assures rapid generation of dry steam
  • AGA design certified by Air-Conditioning, Heating and Refrigeration Institute (AHRI) for natural and propane gas
  • Factory-assembled base and burners reduce installation time
  • Simplified piping. The largest LGB steam boiler requires only two risers
  • Built-in air separator in water boilers. Air is diverted to the expansions tank through a 1" tapping next to supply outlet
  • Steel jackets with durable powder-coat finish in Weil-McLain blue completely insulated designed for fast installation
  • 10 Year Limited Heat Exchanger Warranty. Covers cast iron sections

Weil-McLain LGB Spec Sheet

Weil-McLain LGB Installation Manual

Weil-McLain LGB Owner Manual

What Our Customers Say

January 1, 2026

Absolutely no complaints!

The performance is excellent and the product is made so well.

- Emerson P..

January 1, 2026

Absolutely no complaints!

The quality is fantastic and the product is very versatile.

- Lorelai I..

January 1, 2026

Absolutely no complaints!

It's a very solid and reliable device. It is a joy to use.

- Francis M..

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