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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 10-5029 CLEANOUT COVER PLATE INSULATION 14 X 8

10-5029 CLEANOUT COVER PLATE INSULATION 14 X 8

HYDROTHERM:10-5029
SKU: HYDROTHERM:10-5029
$9.90
Picture of 10-5030 CLEANOUT COVER PLATE INSULATION 14 X 12 1/2

10-5030 CLEANOUT COVER PLATE INSULATION 14 X 12 1/2

HYDROTHERM:10-5030
SKU: HYDROTHERM:10-5030
$9.90
Picture of 10-5031 HYDROTHERM INSULATING BLOCK

10-5031 HYDROTHERM INSULATING BLOCK

HYDROTHERM:10-5031
SKU: HYDROTHERM:10-5031
$43.31
Picture of 10-5038 SILICONE TAPE

10-5038 SILICONE TAPE

HYDROTHERM:10-5038
SKU: HYDROTHERM:10-5038
$6.19
Picture of 10-6625 COPE SEAL (1 FOOT INCREMENTS)

10-6625 COPE SEAL (1 FOOT INCREMENTS)

HYDROTHERM:10-6625
SKU: HYDROTHERM:10-6625
$1.24
Picture of 10K OUTDOOR PROBE

10K OUTDOOR PROBE

HYDROTHERM:GX-81027-1
SKU: HYDROTHERM:GX-81027-1
$131.18
Picture of 11-00109 MBC FILTER KIT

11-00109 MBC FILTER KIT

HYDROTHERM:11-00109
SKU: HYDROTHERM:11-00109
$65.59
Picture of 11-00110 MBC FILTER KIT

11-00110 MBC FILTER KIT

HYDROTHERM:11-00110
SKU: HYDROTHERM:11-00110
$77.96
Picture of 115/24V 20VA TRANSFORMER

115/24V 20VA TRANSFORMER

HYDROTHERM:26-3005
SKU: HYDROTHERM:26-3005
$106.43
Picture of 14-0008 HYDROSTAT ELECTROSTATIC WELL*

14-0008 HYDROSTAT ELECTROSTATIC WELL*

HYDROTHERM:14-0008
SKU: HYDROTHERM:14-0008
$34.65