Skip to main content
Notice:
We’re making improvements to our website! Pricing and inventory information will be temporarily unavailable until August 2026.
More details here.
About
Careers
Contact Us
open menu
Site Search
submit search
Sign In / Register
My Account
Sign In / Register
My Account
Bathroom
Kitchen
Lighting
Parts
Brands
Clearance
Home
Hydronics
Hydronic Controls & Sensors
Hydronic Controls & Sensors
Filters
Shop Hydronic Controls & Sensors
Hydronic Boiler Control
Hydronic Low Water Cutoff
Hydronic Meters
Hydronic Mixing Controls
Hydronic Sensors
Hydronic Switches
Hydronic Switching Relays
Hydronic Temperature & Pressure Gauges
Hydronic Temperature Controls
Hydronic Zone Valve Controllers
Water Feeders
Search within category
Stocked Items
Stocked Items Only
Brands
ALLIEDâ„¢
(1)
Approved Vendor
(2)
Axiom
(2)
AZEL
(2)
Calefactio
(1)
HeatLink®
(5)
McDonnell & Miller
(1)
NTI
(2)
Super Hot®
(1)
Taco® Comfort Solutions™
(3)
Viessmann Manufacturing®
(5)
WATTS®
(1)
WATTS® | Tekmar®
(4)
Country Of Origin
Canada
(6)
US
(1)
Filters
Shop Hydronic Controls & Sensors
Hydronic Boiler Control
Hydronic Low Water Cutoff
Hydronic Meters
Hydronic Mixing Controls
Hydronic Sensors
Hydronic Switches
Hydronic Switching Relays
Hydronic Temperature & Pressure Gauges
Hydronic Temperature Controls
Hydronic Zone Valve Controllers
Water Feeders
Search within category
Stocked Items
Stocked Items Only
Brands
ALLIEDâ„¢
(1)
Approved Vendor
(2)
Axiom
(2)
AZEL
(2)
Calefactio
(1)
HeatLink®
(5)
McDonnell & Miller
(1)
NTI
(2)
Super Hot®
(1)
Taco® Comfort Solutions™
(3)
Viessmann Manufacturing®
(5)
WATTS®
(1)
WATTS® | Tekmar®
(4)
Country Of Origin
Canada
(6)
US
(1)
30Â
ProductsÂ
Sort by
Best Match
Product: A to Z
Product: Z to A
Brand: A to Z
Brand: Z to A
Product Grid View
Product List View
content loaded
Quick View
AXIOM DMF150 DIGITAL MINI FEEDER 4.5USG 0-45PSI
MFR Part #:Â
MFR Part #
DMF150
SKU #:Â
SKU #
1210174
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
AXIOM MF200 PRESSURE PAL MINI SYSTEM FEEDER WITH 6 GALLON TANK
MFR Part #:Â
MFR Part #
MF200
SKU #:Â
SKU #
1139044
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
AZEL SZ-V4 4 ZONE VALVE CONTROL W/TRANSFORMER
MFR Part #:Â
MFR Part #
SZ-V4
SKU #:Â
SKU #
1175731
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
MCDONNEL/MILLER RB-122E LOW WATER CUT-OFF
MFR Part #:Â
MFR Part #
144676
SKU #:Â
SKU #
1212417
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
TEKMAR 256 ONE STAGE BOILER CONTROL
MFR Part #:Â
MFR Part #
256
SKU #:Â
SKU #
1510706
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
VIESSMANN 7427419 CTRL CONSOLE WB1B-26
MFR Part #:Â
MFR Part #
7427419
SKU #:Â
SKU #
1299671
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
VIESSMANN 7825490 FIXED HIGH LIMIT 210 DEG F VITODENS 100-W
MFR Part #:Â
MFR Part #
7825490
SKU #:Â
SKU #
1210481
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
WATTS 999900 OEM-170 LOW WATER CUT-OFF
MFR Part #:Â
MFR Part #
999900
SKU #:Â
SKU #
1212438
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
2-1/2 0-60PSI 30-250F 1/4NPT BACK MOUNT TRIDICATOR
MFR Part #:Â
MFR Part #
TRIDICATOR
SKU #:Â
SKU #
1136398
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
3-1/2 0-60PSI 1/2NPT TRIDICATOR
MFR Part #:Â
MFR Part #
TRIDICATOR
SKU #:Â
SKU #
1136397
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
ALLIED 200177 NTC3 TEMPERATURE SENSOR
MFR Part #:Â
MFR Part #
200177
SKU #:Â
SKU #
1212151
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
AZEL DST-777S DIGITAL SETPOINT TEMP CONTROL SINGLE RELAY
MFR Part #:Â
MFR Part #
DST-777S
SKU #:Â
SKU #
1206222
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
CALEFACTIO GMP6 6 GAL SYSTM FEEDER 1/2 FNPT CNCTN
MFR Part #:Â
MFR Part #
GMP6
SKU #:Â
SKU #
1200204
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
HEATLINK 30071 UNIVERSAL SENSOR
MFR Part #:Â
MFR Part #
30071
SKU #:Â
SKU #
1102199
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
HEATLINK 30072 SLAB SENSOR WITH 20FT CABLE
MFR Part #:Â
MFR Part #
30072
SKU #:Â
SKU #
1177327
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
HEATLINK 31355 COMPACT MIXING RESET CONTROL
MFR Part #:Â
MFR Part #
31355
SKU #:Â
SKU #
1177329
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
HEATLINK V101 3 PUMP BOILER HIGH TEM LOW TEMP
MFR Part #:Â
MFR Part #
V101
SKU #:Â
SKU #
1551060
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
HEATLINK V102 4 PUMP BOILER HIGH TWO LOW TEMP
MFR Part #:Â
MFR Part #
V102
SKU #:Â
SKU #
1551061
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
NTI 83223-1 PRESSURE SWITCH 1/4IN NPT
MFR Part #:Â
MFR Part #
83223-1
SKU #:Â
SKU #
1171953
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
NTI 84010 SYSTEM PIPE SENSOR
MFR Part #:Â
MFR Part #
84010
SKU #:Â
SKU #
0120010
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
TACO LTA1203S-2 120VAC LWCO AUTO RESET PROBE WITH TEST BUTTON
MFR Part #:Â
MFR Part #
LTA1203S-2
SKU #:Â
SKU #
1166605
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
TACO SR504-5 EXP RELAY WITH PRIORITY
MFR Part #:Â
MFR Part #
SR504
SKU #:Â
SKU #
1132218
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
TEKMAR 070 OUTDOOR SENSOR
MFR Part #:Â
MFR Part #
070
SKU #:Â
SKU #
1148199
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
TEKMAR 654 TEKNET SNOW MELT CONTROL
MFR Part #:Â
MFR Part #
654
SKU #:Â
SKU #
1211599
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
VIESSMANN 7179114 SENSOR #5 (DHW IMMERSION) WB2B
MFR Part #:Â
MFR Part #
7179114
SKU #:Â
SKU #
1168778
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
VIESSMANN 7826987 CONTROL CONSOLE WB1A30 VITODENS 100
MFR Part #:Â
MFR Part #
7826987
SKU #:Â
SKU #
1201276
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
VIESSMANN 7841527 CONTROL CONSOLE WB1BC 35
MFR Part #:Â
MFR Part #
7841527
SKU #:Â
SKU #
1203426
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
ZONE CONTROL BOARD F/MG SERIES BOILER ALLIED ZCB
MFR Part #:Â
MFR Part #
ZCB
SKU #:Â
SKU #
1146189
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
TACO Z100C2-2 1IN SWT BRASS ZONE VALVE NORMALLY CLOSED WITH END SWITCH
MFR Part #:Â
MFR Part #
Z100C2-2
SKU #:Â
SKU #
1689007
U/M
Please Sign in for Pricing
QTY
Compare
Quick View
TEKMAR 306V 6-ZONE VALVE CONTROL WITH PRIORITY
MFR Part #:Â
MFR Part #
306V
SKU #:Â
SKU #
1689006
U/M
Please Sign in for Pricing
QTY
Compare