Search

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.

View as Grid List
Sort by
Display per page
Picture of IGNITION MODULE

IGNITION MODULE

HYDROTHERM:GX-82058
SKU: HYDROTHERM:GX-82058
$657.11
Picture of IGNITION MODULE (05-319004-051)

IGNITION MODULE (05-319004-051)

HYDROTHERM:72850
SKU: HYDROTHERM:72850
$301.95
Picture of IGNITION MODULE (35-655927-001) (FENWALL)

IGNITION MODULE (35-655927-001) (FENWALL)

HYDROTHERM:50337
SKU: HYDROTHERM:50337
$269.77
Picture of IGNITION TRANSFORMER

IGNITION TRANSFORMER

HYDROTHERM:16-00353-001
SKU: HYDROTHERM:16-00353-001
$173.25
Picture of IGNITION TRANSFORMER REPLACEMENT KIT

IGNITION TRANSFORMER REPLACEMENT KIT

HYDROTHERM:75-00587-001
SKU: HYDROTHERM:75-00587-001
$173.25
Picture of IGNITOR

IGNITOR

HYDROTHERM:GX-82708
SKU: HYDROTHERM:GX-82708
$122.51
Picture of IGNITOR BLOCK ASSEMBLY

IGNITOR BLOCK ASSEMBLY

HYDROTHERM:70-1345R
SKU: HYDROTHERM:70-1345R
$564.30
Picture of IGNITOR NG/LP

IGNITOR NG/LP

HYDROTHERM:BM-8681
SKU: HYDROTHERM:BM-8681
$153.45
Picture of ILLUMINATED ROCKER SWITCH

ILLUMINATED ROCKER SWITCH

HYDROTHERM:58-1555
SKU: HYDROTHERM:58-1555
$4.95
Picture of IMMERSION WELL, HYDROLEVEL

IMMERSION WELL, HYDROLEVEL

HYDROTHERM:50723
SKU: HYDROTHERM:50723
$63.11