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Hydrotherm

KN-Series Condensing Cast Iron Boilers from Advanced Thermal Hydronics (Hydrotherm) are the one and only high efficiency cast iron boiler ever made and offer an industry leading 25 year heat exchanger warranty. KN-Series Boilers combine the efficiency of condensing, gas-fired technology with the strength, durability and heat retention of time-tested cast iron construction. From raw materials to the state-of-the-art digital control system, the complete line of KN-Series products is proudly manufactured at the ATH facility in Boyertown, Pennsylvania. Utilizing decades of foundry and manufacturing expertise, KN-Series boilers are cast, machined, wired and assembled to the tightest standards possible resulting in a finished product that is all-American in terms of innovation, reliability and craftsmanship. Models available from 200,000 - 4,000,000 BTU/h.

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Picture of PILOT (NG) STANDING

PILOT (NG) STANDING

HYDROTHERM:50248PB
SKU: HYDROTHERM:50248PB
$42.08
Picture of PILOT ASSEMBLY (LP)

PILOT ASSEMBLY (LP)

HYDROTHERM:BM-8016
SKU: HYDROTHERM:BM-8016
$68.06
Picture of PILOT ASSEMBLY LP

PILOT ASSEMBLY LP

HYDROTHERM:BM-2694
SKU: HYDROTHERM:BM-2694
$103.95
Picture of PILOT ASSEMBLY LP

PILOT ASSEMBLY LP

HYDROTHERM:BM-2695
SKU: HYDROTHERM:BM-2695
$116.32
Picture of PILOT ASSEMBLY LP

PILOT ASSEMBLY LP

HYDROTHERM:BM-2667
SKU: HYDROTHERM:BM-2667
$70.54
Picture of PILOT ASSEMBLY LP

PILOT ASSEMBLY LP

HYDROTHERM:BM-2668
SKU: HYDROTHERM:BM-2668
$54.45
Picture of PILOT ASSEMBLY LP

PILOT ASSEMBLY LP

HYDROTHERM:BM-2669
SKU: HYDROTHERM:BM-2669
$73.01
Picture of PILOT ASSEMBLY LP

PILOT ASSEMBLY LP

HYDROTHERM:BM-2670
SKU: HYDROTHERM:BM-2670
$71.78
Picture of PILOT ASSEMBLY NG

PILOT ASSEMBLY NG

HYDROTHERM:BM-2681
SKU: HYDROTHERM:BM-2681
$51.97
Picture of PILOT ASSEMBLY NG

PILOT ASSEMBLY NG

HYDROTHERM:BM-2662
SKU: HYDROTHERM:BM-2662
$63.11