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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 03-2027 MAIN GAS ORIFICE (NG)

03-2027 MAIN GAS ORIFICE (NG)

HYDROTHERM:03-2027
SKU: HYDROTHERM:03-2027
$14.85
Picture of 03-2028 MAIN GAS ORIFICE (LP)

03-2028 MAIN GAS ORIFICE (LP)

HYDROTHERM:03-2028
SKU: HYDROTHERM:03-2028
$14.85
Picture of 03-2422 FRONT PANEL - CHAMBER HOUSING

03-2422 FRONT PANEL - CHAMBER HOUSING

HYDROTHERM:03-2422
SKU: HYDROTHERM:03-2422
$305.66
Picture of 03-2456 OBSERVATION PORT TUBE ASSEMBLY

03-2456 OBSERVATION PORT TUBE ASSEMBLY

HYDROTHERM:03-2456
SKU: HYDROTHERM:03-2456
$70.54
Picture of 03-3024 FRONT TIE BAR

03-3024 FRONT TIE BAR

HYDROTHERM:03-3024
SKU: HYDROTHERM:03-3024
$29.70
Picture of 03-7114 Hydrother 03-7114 Propane Or Natural Gas Burner For HI-B & ID-A Boilers
Picture of 03-7118 Hydrotherm 03-7118 Propane Or Natural Gas Burner With Pilot Bracket For HI-B & ID-A
Picture of 03-8438 CLEANOUT COVER PLATE 14 X 8

03-8438 CLEANOUT COVER PLATE 14 X 8

HYDROTHERM:03-8438
SKU: HYDROTHERM:03-8438
$59.40
Picture of 04-1336 HYDROTHERM THERMOCOUPLE

04-1336 HYDROTHERM THERMOCOUPLE

HYDROTHERM:04-1336
SKU: HYDROTHERM:04-1336
$53.21
Picture of 04-1344 SPARK ROD

04-1344 SPARK ROD

HYDROTHERM:04-1344
SKU: HYDROTHERM:04-1344
$91.57