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The GSB8-E boilers are standard cast iron units with durable titanium burners. The guarantee on the units is only average while the price is not.
The CGS-C units are basic cast iron boilers that are available in six sizes to match the heating needs of the home. The CL SERIES units are oil-fired and offer a dhw heating option. They have a swing out burner door for easier maintenance and are available in nine sizes. The warranty on the brand is not very good.
This brand is from PB HEAT LLC. The SERIES 63 units are gas-fired and are available in seven sizes but the guarantee is not very good. The WBV/WV models are oil-fired and have a swing out door for cleaning but only an average warranty.
The GALAXY GXHA is an atmospheric boiler with an automatic vent damper but the guarantee on the units is not very good. The INTREPID STEAM boilers are oil fired with all of the standard features and an optional dhw coil.
This brand is from ECR INTERNATIONAL. The PEG E SERIES offers cast iron gas-fired units with durable stainless steel burners. The SFE IV models are oil-fired and are available in four sizes. The warranty on the brand is not very good.
WEIL-MCLAIN weil-mclain.com NA----3*
The SGO boilers have a swing away burner door for easier cleaning and maintenance. They are available in seven sizes to match the size of the steam system and offer a dhw option. They only have an average guarantee on their boilers.
This brand is a part of MESTEK COMPANY. The GSX units are available in seven sizes and have an automatic vent damper but their warranty is not very good. The SERIES 8HE are oil-fired and have a swing out burner door.
WILLIAMSON williamson-thermoflo.com --1*----4*
The GSA boilers are gas-fired and have durable stainless steel burners but a guarantee that is not very good. The OSB boilers are oil-fired and feature a swing away burner door and an optional dhw coil. they are backed by a good warranty.