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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 DISPLAY MOUNT PLATE

DISPLAY MOUNT PLATE

HYDROTHERM:03-1809
SKU: HYDROTHERM:03-1809
$96.52
Picture of FLUE COLLAR ADAPTER – PB/HE-3 & PB/HE-4 – STEAM

FLUE COLLAR ADAPTER – PB/HE-3 & PB/HE-4 – STEAM

HYDROTHERM:90386
SKU: HYDROTHERM:90386
$94.05
Picture of PILOT ASSEMBLY NG

PILOT ASSEMBLY NG

HYDROTHERM:BM-2691
SKU: HYDROTHERM:BM-2691
$94.05
Picture of HYDROTHERM 2 AEROQUIP COUPLING

HYDROTHERM 2 AEROQUIP COUPLING

HYDROTHERM:BM-3354
SKU: HYDROTHERM:BM-3354
$94.05
Picture of PILOT ASSEMBLY (LP)

PILOT ASSEMBLY (LP)

HYDROTHERM:BM-8073
SKU: HYDROTHERM:BM-8073
$94.05
Picture of DISPLAY OVERLAY

DISPLAY OVERLAY

HYDROTHERM:60-5644
SKU: HYDROTHERM:60-5644
$92.81
Picture of KEYPAD OVERLAY

KEYPAD OVERLAY

HYDROTHERM:60-5642
SKU: HYDROTHERM:60-5642
$92.81
Picture of KEYPAD OVERLAY

KEYPAD OVERLAY

HYDROTHERM:60-5643
SKU: HYDROTHERM:60-5643
$92.81
Picture of HYDROTHERM RELIEF VALVE SET @ 50PSI

HYDROTHERM RELIEF VALVE SET @ 50PSI

HYDROTHERM:22-1200
SKU: HYDROTHERM:22-1200
$92.81
Picture of STEEL BURNER W/INT PILOT CAP

STEEL BURNER W/INT PILOT CAP

HYDROTHERM:51539
SKU: HYDROTHERM:51539
$92.81