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 FLAME SAFEGUARD RM7595C (ONLY)

FLAME SAFEGUARD RM7595C (ONLY)

HYDROTHERM:16-00257-001
SKU: HYDROTHERM:16-00257-001
$1,067.96
Picture of FLAME SAFEGUARD RM7895C SUBBASE (ONLY)

FLAME SAFEGUARD RM7895C SUBBASE (ONLY)

HYDROTHERM:16-00259-001
SKU: HYDROTHERM:16-00259-001
$70.54
Picture of FLAME SAFEGUARD RM7895C WITH SUBBASE

FLAME SAFEGUARD RM7895C WITH SUBBASE

HYDROTHERM:75-00583-001
SKU: HYDROTHERM:75-00583-001
$1,138.50
Picture of FLAME SENSOR

FLAME SENSOR

HYDROTHERM:04-1346
SKU: HYDROTHERM:04-1346
$90.34
Picture of FLAME SENSOR PSE

FLAME SENSOR PSE

HYDROTHERM:50037
SKU: HYDROTHERM:50037
$75.49
Picture of FLANGE

FLANGE

HYDROTHERM:12-00302-004
SKU: HYDROTHERM:12-00302-004
$34.65
Picture of FLANGE

FLANGE

HYDROTHERM:12-00302-008
SKU: HYDROTHERM:12-00302-008
$126.23
Picture of FLANGE, SHUT OFF SWIVEL

FLANGE, SHUT OFF SWIVEL

HYDROTHERM:12-00301-005
SKU: HYDROTHERM:12-00301-005
$129.94
Picture of FLOW SENSOR (VVX15)

FLOW SENSOR (VVX15)

HYDROTHERM:13-00526-002
SKU: HYDROTHERM:13-00526-002
$615.04
Picture of FLOW SENSOR REPLACEMENT KIT

FLOW SENSOR REPLACEMENT KIT

HYDROTHERM:75-00582-001
SKU: HYDROTHERM:75-00582-001
$888.53