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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 HARNESS (J7) ON/OFF

HARNESS (J7) ON/OFF

HYDROTHERM:70-2038
SKU: HYDROTHERM:70-2038
$42.08
Picture of HARNESS BLOWER

HARNESS BLOWER

HYDROTHERM:70-2031
SKU: HYDROTHERM:70-2031
$17.33
Picture of HEAT EXCHANGER

HEAT EXCHANGER

HYDROTHERM:GX-82597
SKU: HYDROTHERM:GX-82597
$6,170.17
Picture of HEAT EXCHANGER / ASSEMBLED BLOCK

HEAT EXCHANGER / ASSEMBLED BLOCK

HYDROTHERM:BM-3162
SKU: HYDROTHERM:BM-3162
$3,452.63
Picture of HEAT EXCHANGER / ASSEMBLED BLOCK

HEAT EXCHANGER / ASSEMBLED BLOCK

HYDROTHERM:BM-3163
SKU: HYDROTHERM:BM-3163
$3,837.49
Picture of HEAT EXCHANGER / ASSEMBLED BLOCK

HEAT EXCHANGER / ASSEMBLED BLOCK

HYDROTHERM:BM-3164
SKU: HYDROTHERM:BM-3164
$4,278.04
Picture of HEAT EXCHANGER / ASSEMBLED BLOCK

HEAT EXCHANGER / ASSEMBLED BLOCK

HYDROTHERM:BM-3165
SKU: HYDROTHERM:BM-3165
$4,733.44
Picture of HEAT EXCHANGER / ASSEMBLED BLOCK

HEAT EXCHANGER / ASSEMBLED BLOCK

HYDROTHERM:BM-3166
SKU: HYDROTHERM:BM-3166
$5,211.11
Picture of HEAT EXCHANGER / ASSEMBLED BLOCK

HEAT EXCHANGER / ASSEMBLED BLOCK

HYDROTHERM:BM-3182
SKU: HYDROTHERM:BM-3182
$2,625.98
Picture of HEAT EXCHANGER / ASSEMBLED BLOCK

HEAT EXCHANGER / ASSEMBLED BLOCK

HYDROTHERM:BM-3183
SKU: HYDROTHERM:BM-3183
$3,372.19