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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 70-1207 GAS TRAIN SHROUD

70-1207 GAS TRAIN SHROUD

HYDROTHERM:70-1207
SKU: HYDROTHERM:70-1207
$230.17
Picture of 70-1209 BURNER

70-1209 BURNER

HYDROTHERM:70-1209
SKU: HYDROTHERM:70-1209
$701.66
Picture of 70-1232 CONDENSATE DRAIN EXTENSION

70-1232 CONDENSATE DRAIN EXTENSION

HYDROTHERM:70-1232
SKU: HYDROTHERM:70-1232
$30.94
Picture of 70-1244 DRAIN ASSEMBLY

70-1244 DRAIN ASSEMBLY

HYDROTHERM:70-1244
SKU: HYDROTHERM:70-1244
$179.44
Picture of 70-1336 IGNITION COVER

70-1336 IGNITION COVER

HYDROTHERM:70-1336
SKU: HYDROTHERM:70-1336
$201.71
Picture of 70-1338 CONDENSATE DRAIN ASSEMBLY (LOW)

70-1338 CONDENSATE DRAIN ASSEMBLY (LOW)

HYDROTHERM:70-1338
SKU: HYDROTHERM:70-1338
$258.64
Picture of 70-1421 BLANK BOX ASSEMBLY

70-1421 BLANK BOX ASSEMBLY

HYDROTHERM:70-1421
SKU: HYDROTHERM:70-1421
$29.70
Picture of 70-1427 5K RESISTOR ASSEMBLY

70-1427 5K RESISTOR ASSEMBLY

HYDROTHERM:70-1427
SKU: HYDROTHERM:70-1427
$136.13
Picture of 70-1552 JACKET PANEL ASSEMBLY

70-1552 JACKET PANEL ASSEMBLY

HYDROTHERM:70-1552
SKU: HYDROTHERM:70-1552
$736.31
Picture of 70-1554 JACKET ASSEMBLY

70-1554 JACKET ASSEMBLY

HYDROTHERM:70-1554
SKU: HYDROTHERM:70-1554
$1,270.91