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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 60248 HEATER PLATE GASKET EPDM (WATER & STEAM)

60248 HEATER PLATE GASKET EPDM (WATER & STEAM)

HYDROTHERM:60248
SKU: HYDROTHERM:60248
$22.27
Picture of 60265 T&P GAUGE

60265 T&P GAUGE

HYDROTHERM:60265
SKU: HYDROTHERM:60265
$29.70
Picture of 60-4252 ELBOW, PILOT

60-4252 ELBOW, PILOT

HYDROTHERM:60-4252
SKU: HYDROTHERM:60-4252
$23.51
Picture of 60-4280 SIGHT GLASS

60-4280 SIGHT GLASS

HYDROTHERM:60-4280
SKU: HYDROTHERM:60-4280
$12.38
Picture of 60-5644 DISPLAY OVERLAY

60-5644 DISPLAY OVERLAY

HYDROTHERM:60-5644
SKU: HYDROTHERM:60-5644
$92.81
Picture of 60824 1/4-20 X 2 1/4 SCREW

60824 1/4-20 X 2 1/4 SCREW

HYDROTHERM:60824
SKU: HYDROTHERM:60824
$2.47
Picture of 60833 CLEANOUT DOOR ROLL PIN

60833 CLEANOUT DOOR ROLL PIN

HYDROTHERM:60833
SKU: HYDROTHERM:60833
$0.49
Picture of 60871 CLEANOUT COVER JAM NUT (5/16)

60871 CLEANOUT COVER JAM NUT (5/16)

HYDROTHERM:60871
SKU: HYDROTHERM:60871
$1.24
Picture of 61161 BUSHING 1 X 1 1/4

61161 BUSHING 1 X 1 1/4

HYDROTHERM:61161
SKU: HYDROTHERM:61161
$13.61
Picture of 61180PB BASE REAR PANEL

61180PB BASE REAR PANEL

HYDROTHERM:61180PB
SKU: HYDROTHERM:61180PB
$117.56