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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 75-00214-006 FILTER BOX ASSEMBLY

75-00214-006 FILTER BOX ASSEMBLY

HYDROTHERM:75-00214-006
SKU: HYDROTHERM:75-00214-006
$6,322.39
Picture of 75-00222-001 FILTER BOX COVER

75-00222-001 FILTER BOX COVER

HYDROTHERM:75-00222-001
SKU: HYDROTHERM:75-00222-001
$116.32
Picture of 75-00244-001 COMBUSTION CHAMBER

75-00244-001 COMBUSTION CHAMBER

HYDROTHERM:75-00244-001
SKU: HYDROTHERM:75-00244-001
$1,903.27
Picture of 75-00244-002 COMBUSTION CHAMBER

75-00244-002 COMBUSTION CHAMBER

HYDROTHERM:75-00244-002
SKU: HYDROTHERM:75-00244-002
$1,777.05
Picture of 75-00244-003 COMBUSTION CHAMBER

75-00244-003 COMBUSTION CHAMBER

HYDROTHERM:75-00244-003
SKU: HYDROTHERM:75-00244-003
$1,049.40
Picture of 75-00540-005 BURNER REBUILD KITS

75-00540-005 BURNER REBUILD KITS

HYDROTHERM:75-00540-005
SKU: HYDROTHERM:75-00540-005
$3,056.63
Picture of 75-00540-006 BURNER REBUILD KITS

75-00540-006 BURNER REBUILD KITS

HYDROTHERM:75-00540-006
SKU: HYDROTHERM:75-00540-006
$2,126.02
Picture of 75-00543-002 BURNER GASKET KIT

75-00543-002 BURNER GASKET KIT

HYDROTHERM:75-00543-002
SKU: HYDROTHERM:75-00543-002
$2,208.94
Picture of 75-00543-003 BURNER GASKET KIT

75-00543-003 BURNER GASKET KIT

HYDROTHERM:75-00543-003
SKU: HYDROTHERM:75-00543-003
$1,670.63
Picture of 75-00543-004 BURNER GASKET KIT

75-00543-004 BURNER GASKET KIT

HYDROTHERM:75-00543-004
SKU: HYDROTHERM:75-00543-004
$1,546.88