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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 IGNITION MODULE S8600M

IGNITION MODULE S8600M

HYDROTHERM:BM-8786
SKU: HYDROTHERM:BM-8786
$128.70
Picture of BASE REAR PANEL

BASE REAR PANEL

HYDROTHERM:61181PB
SKU: HYDROTHERM:61181PB
$126.23
Picture of DUAL AQUASTAT (L4081B)

DUAL AQUASTAT (L4081B)

HYDROTHERM:02-2602
SKU: HYDROTHERM:02-2602
$126.23
Picture of FLANGE

FLANGE

HYDROTHERM:12-00302-008
SKU: HYDROTHERM:12-00302-008
$126.23
Picture of CONVERSION KIT (NG TO LP)

CONVERSION KIT (NG TO LP)

HYDROTHERM:75-00577-003
SKU: HYDROTHERM:75-00577-003
$126.23
Picture of CONVERSION KIT (LP TO NG)

CONVERSION KIT (LP TO NG)

HYDROTHERM:75-00576-003
SKU: HYDROTHERM:75-00576-003
$126.23
Picture of GAS VALVE(VR8300) NG ONLY

GAS VALVE(VR8300) NG ONLY

HYDROTHERM:BM-8793
SKU: HYDROTHERM:BM-8793
$124.99
Picture of 6 SMOKEHOOD W/GASKET & SCREWS

6 SMOKEHOOD W/GASKET & SCREWS

HYDROTHERM:01-3668
SKU: HYDROTHERM:01-3668
$123.75
Picture of PILOT (NG) SPARK

PILOT (NG) SPARK

HYDROTHERM:50996PB
SKU: HYDROTHERM:50996PB
$123.75
Picture of IGNITOR

IGNITOR

HYDROTHERM:GX-82708
SKU: HYDROTHERM:GX-82708
$122.51