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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 GX-82104-1 AIR METERING ELBOW

GX-82104-1 AIR METERING ELBOW

HYDROTHERM:GX-82104-1
SKU: HYDROTHERM:GX-82104-1
$47.03
Picture of GX-82127 CONDENSATE NYLON Y

GX-82127 CONDENSATE NYLON Y

HYDROTHERM:GX-82127
SKU: HYDROTHERM:GX-82127
$37.13
Picture of GX-82658 PREMIX BURNER

GX-82658 PREMIX BURNER

HYDROTHERM:GX-82658
SKU: HYDROTHERM:GX-82658
$1,264.72
Picture of GX-82659 MANIFOLD LIMIT  150/200

GX-82659 MANIFOLD LIMIT 150/200

HYDROTHERM:GX-82659
SKU: HYDROTHERM:GX-82659
$153.45
Picture of GX-82660 STACK LIMIT

GX-82660 STACK LIMIT

HYDROTHERM:GX-82660
SKU: HYDROTHERM:GX-82660
$464.06
Picture of GX-82761 PREMIX BURNER GASKET

GX-82761 PREMIX BURNER GASKET

HYDROTHERM:GX-82761
SKU: HYDROTHERM:GX-82761
$38.36
Picture of GX-82762 FLAME ROD

GX-82762 FLAME ROD

HYDROTHERM:GX-82762
SKU: HYDROTHERM:GX-82762
$131.18
Picture of GX-82763 FLUE BOX

GX-82763 FLUE BOX

HYDROTHERM:GX-82763
SKU: HYDROTHERM:GX-82763
$246.26
Picture of GX-82764 FLUE BOX GASKET

GX-82764 FLUE BOX GASKET

HYDROTHERM:GX-82764
SKU: HYDROTHERM:GX-82764
$42.08
Picture of GX-82765 FLUE BOX OUTLET GASKET

GX-82765 FLUE BOX OUTLET GASKET

HYDROTHERM:GX-82765
SKU: HYDROTHERM:GX-82765
$42.08