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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 T&P INDICATOR 50#

T&P INDICATOR 50#

HYDROTHERM:20-1001
SKU: HYDROTHERM:20-1001
$38.36
Picture of TACO 005 W/INTERNAL FLOW CHECK

TACO 005 W/INTERNAL FLOW CHECK

HYDROTHERM:09-1520
SKU: HYDROTHERM:09-1520
$198.00
Picture of TACO CIRCULATOR FLANGE

TACO CIRCULATOR FLANGE

HYDROTHERM:12-00302-003
SKU: HYDROTHERM:12-00302-003
$28.46
Picture of TANKLESS COIL – PB/HE-3 & PB/HE-4 – STEAM

TANKLESS COIL – PB/HE-3 & PB/HE-4 – STEAM

HYDROTHERM:90530
SKU: HYDROTHERM:90530
$897.19
Picture of TANKLESS CONTROL

TANKLESS CONTROL

HYDROTHERM:02-3923
SKU: HYDROTHERM:02-3923
$174.49
Picture of TERMINAL STRIP

TERMINAL STRIP

HYDROTHERM:58-2306
SKU: HYDROTHERM:58-2306
$12.38
Picture of THERMISTER

THERMISTER

HYDROTHERM:GX-83035
SKU: HYDROTHERM:GX-83035
$189.34
Picture of THERMISTER   150/200

THERMISTER 150/200

HYDROTHERM:GX-82671
SKU: HYDROTHERM:GX-82671
$160.88
Picture of THERMOCOUPLE

THERMOCOUPLE

HYDROTHERM:04-1335
SKU: HYDROTHERM:04-1335
$71.78
Picture of THERMOCOUPLE (24)

THERMOCOUPLE (24)

HYDROTHERM:50838
SKU: HYDROTHERM:50838
$77.96