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 02-4248 DISPLAY BOARD (TEKMAR)

02-4248 DISPLAY BOARD (TEKMAR)

HYDROTHERM:02-4248
SKU: HYDROTHERM:02-4248
$475.20
Picture of 02-4249 MAIN BOARD (TEKMAR)

02-4249 MAIN BOARD (TEKMAR)

HYDROTHERM:02-4249
SKU: HYDROTHERM:02-4249
$738.79
Picture of 02-4279 COMMUNICATIONS BOARD

02-4279 COMMUNICATIONS BOARD

HYDROTHERM:02-4279
SKU: HYDROTHERM:02-4279
$396.00
Picture of 02-4283 10K SENSOR

02-4283 10K SENSOR

HYDROTHERM:02-4283
SKU: HYDROTHERM:02-4283
$44.55
Picture of 02-4285 2 1/2 WELL

02-4285 2 1/2 WELL

HYDROTHERM:02-4285
SKU: HYDROTHERM:02-4285
$53.21
Picture of 02-4290 CONTROL BOARD W/DISPLAY

02-4290 CONTROL BOARD W/DISPLAY

HYDROTHERM:02-4290
SKU: HYDROTHERM:02-4290
$1,345.16
Picture of 02-4291 HYDROTHERM 02-4291 KN-4 CONTROL BOARD W/ DISPLAY 024291

02-4291 HYDROTHERM 02-4291 KN-4 CONTROL BOARD W/ DISPLAY 024291

HYDROTHERM:02-4291
SKU: HYDROTHERM:02-4291
$1,331.55
Picture of 02-4296 IGNITION CONTROL

02-4296 IGNITION CONTROL

HYDROTHERM:02-4296
SKU: HYDROTHERM:02-4296
$241.31
Picture of 02-4350 PROTOCARRIER

02-4350 PROTOCARRIER

HYDROTHERM:02-4350
SKU: HYDROTHERM:02-4350
$684.34
Picture of 02-4807 PRESSURETROL (PA404A)

02-4807 PRESSURETROL (PA404A)

HYDROTHERM:02-4807
SKU: HYDROTHERM:02-4807
$167.06