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Sensors & Control Accessories

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217 Products

Weil-McLain - Outdoor Temperature Sensor Kit - For Weil-McLain GV90+, CGi, CGa, and EG-W Hot Water Boilers - MPN: 381356586
14% Buy This
$27.00
In-Stock
tekmar - 070 - Outdoor Sensor
8% Buy This
$44.00
Factory-Direct
Buderus - 5720724 - BFU Room Sensor - For Logamatic 2107 Control
8% Buy This
$149.00
Factory-Direct
tekmar - Classic Series - 518 - Thermostat - Non-Programmable - One Stage Heat
6% Buy This
$101.00
Factory-Direct
Buderus - 7746900845 - Cascade Module - MCM10 - For GB142 and GB162 Boilers
6% Buy This
$939.00
Factory-Direct
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Learn More About Taco SR501-4
Taco - SR501-4 - Zone Switching Relay - One Zone
4% Buy This
$71.42
In-Stock
Learn More About Hydrolevel 3250
Hydrolevel HydroStat 3250 Universal Temperature Limit, Boiler Reset and Low Water Cut-Off for Oil-Fired Boilers, 120 VAC
4% Buy This
$222.00
Factory-Direct
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About Weil-McLain 510312091
Weil-McLain - Hot Water Temperature Control - Operating Limit - Manual Reset - Low-High-Low Control - 510312091
4% Buy This
$456.00
Factory-Direct
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About Tekmar 009
tekmar - 009 - Transformer - 120V AC to 24V AC
4% Buy This
$72.00
Factory-Direct
Learn More About Honeywell R8184M1051
$247.00
In-Stock
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Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About Honeywell L4006E1125
$296.00
Factory-Direct
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About Tekmar 012
tekmar - 012 - Adaptor Plate - For Enclosure S
4% Buy This
$27.00
Factory-Direct
Learn More About Taco SR503-4
Taco - SR503-4 - Zone Switching Relay - Three Zones - 1 Priority Zone
4% Buy This
$182.00
In-Stock
Learn More About Triangle Tube PGRKIT20
Triangle Tube PS110, PE110 Low-Water Cut-Off for Hot Water Boilers
4% Buy This
$81.00
Factory-Direct
Learn More About Buderus 7738003610
Buderus - 7738003610 - Hydrostat Outdoor Sensor Kit - For G115WS and G215 Boilers
2% Buy This
$56.00
Factory-Direct
Learn More About Buderus 7738003609
Buderus - 7738003609 - Hydrostat Wall Mounting Kit - For G115WS and G215 Boilers
2% Buy This
$52.00
Factory-Direct
Learn More About Buderus 5016602
Buderus - 5016602 - Modulating Firing Module - For Logamatic 2107 Control
2% Buy This
$246.00
Factory-Direct
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About Tekmar 079
tekmar - 079 - Slab Sensor - 10' Wire - For Use with Floor Heating Applications
2% Buy This
$41.00
Factory-Direct
Learn More About Tekmar 132-
tekmar - Classic Series - 132 - Pump Sequencer - Standby - Two Stage
2% Buy This
$804.00
Factory-Direct
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About Tekmar 521
tekmar - 521 - Thermostat - 7-Day Programmable - Two Stage Heat or One Stage Heat/ One stage Cool - Buttons
2% Buy This
$159.00
Factory-Direct
Learn More About Honeywell L8124A1015
Honeywell
Honeywell, L8124A1015, Honeywell Triple Aquastat Relay Immersion Type Controller for High Limit Protection, Low Limit+Circulator Control Applications
2% Buy This
$343.38
In-Stock
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Learn More About Honeywell L8148A1017
$279.00
In-Stock
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Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.