Smith Cast Iron Boilers | FurnaceCompare®

Smith Cast Iron Boilers

Everything you need on Smith Cast Iron Boilers, including model details, industry rankings and customer reviews, all in one place.

Smith Cast Iron Boiler Overview

Smith Cast Iron Boilers manufactures gas and oil boilers for residential and commercial applications. Smith Cast Iron Boilers is owned by Mestek, which had sales of approximately $678 million in 2017.

What are the 10 Best Boilers?

Corporate History

Smith Cast Iron Boilers has its origins in the 1853 opening of a foundry in Westfield, Mass., specializing in iron castings. The foundry owners, brothers Henry and Edwin Smith, later worked with John Mills to create the Mills Boiler. Shortly thereafter the H.B. Smith Co. Inc. was formed. Mestek Inc. has distributed the Smith line of residential, commercial and institutional cast iron boilers since 1990.

Product Lines

Smith cast iron boilers reportedly are known for their durability and long lifetimes. They are designed for installation in residences and large commercial applications, in both steam and water forms. Their most popular boiler is the Smith 8 Series, a hot water/steam oil-fired boiler available in 8 sizes with efficiencies up to 86% AFUE.


Cast iron sections of Smith residential water boilers are covered by a limited lifetime warranty, pro-rated after the 10th year. Steam boilers have a 10-year warranty on cast iron sections.

Find a Certified Heating & Cooling Professional In Your Area

Contact a top-rated local expert to help with all of your home's HVAC needs.

HVAC Brands

Learn more about your home's heating and cooling system with our guides, how-to's, FAQ's, tips and more.

Ready to get a quote from an HVAC contractor?

Let us know what type of service you need and we can connect you with a certified local HVAC contractor.

Please enter a valid name

Please enter a valid phone number

Please enter a valid zip code

There are no dealers in this zip code.

Please enter a valid email address

Please select repair or replace

Please select heating, cooling or both