Now Featuring

The Packaged Delta-T ECM Hydronic Heating Appliance™ (NG/LP)

All of our Appliances are now available with Natural Gas (NG) or Liquid Propane (LP) Combustion.


  • A truly pre-built, free-standing Hydronic (FHW) Gas Heating Appliance for efficient “on demand” builds or upgrades!
  • Built on the rock solid Weil-McLain® UO Series Triple-Pass “High-Mass” Cast Iron Boilers.  “Weils” have  been the finest American-Built Boilers for generations and are the industry “Heavyweight Champions”, by far.
  • A Carlin Appliance-Specific EZ-PRO Gas (NG or LP) Burner is provided for guaranteed performance.
  • Our Appliance features burner mounting interchangeability. Change the fuel, change the burner only ….. not the system.
  • Featuring Taco® “Delta-T” (ΔT) ECM Hydronic Distribution Technology from America’s premier supplier to maintain ideal settings and optimize performance of both hydronics and electrical operation.
  • Our hydronic design (U.S. Patent 10,690,356 – Canada to follow) optimizes energy delivery to distribution points.  We challenge ANY plumber, heating technician or installer to surpass it’s performance!
  • An efficient, compactly packaged, durable (all cast iron, steel-piped, brass/bronze-valved) and optimized hydronic appliance. Natural, highest water chemistry, magnetite alleviation and thermal shock resistance. NO COPPER PIPES OR FITTINGS USED!
  • System is fully IPS (female pipe fitting) terminated, permitting inter-piping selection of hard pipe, soft or hard copper, or PEX …. at your installation option.
  • Configured by a serviceman of 60+ years experience for optimized servicing efficiency. Every control and service component is within an arm’s reach! “No purge” supply/return service. Uses all Standard American Heating Service Components, available at any Trade Shop.
  • Only Premium American Hydronic Technology coupled with our assembly expertise provide you with the most durable, highest performing, and best value on the market ….. bar none!

NOTE: All other pertinent product specifications and details on this site apply.