Thermostatic Boiler Controls

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172 Products

Learn More About Taco SR504-4
Taco - SR504-4 - Zone Switching Relay - Four Zones - 1 Priority Zone
$398.00
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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 Hydrolevel 48-121
Hydrolevel HydroStat Pipe Mounting Kit, 4' Sensor Cord
$109.00
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Learn More About Hydrolevel 48-104
Hydrolevel HydroStat Wall/Jacket Mounting Kit, 20' Sensor Cord
$95.00
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Learn More About Hydrolevel 48-102
Hydrolevel HydroStat Wall/Jacket Mounting Kit, 4' Sensor Cord
$69.00
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Learn More About Honeywell 121371L
Honeywell
Honeywell, 121371L, Honeywell Copper Well Assembly, 3" Insertion, 1/2" x 1/4" Spud, Honeywell Original Accessory
$54.42
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Learn More About Tekmar 256
tekmar - Classic Series - 256 - Boiler Control - Outdoor Temperature Reset - One Stage
$225.00
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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 552
tekmar - Designer Series - 552 - Thermostat - 7-Day Programmable - Compatible with tekmarNet 2 and tekmarNet 4 - One Stage Heat - Touchscreen
$266.00
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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 260
tekmar - Classic Series - 260 - Boiler Control - Outdoor Temperature Reset - One Stage - Domestic Hot Water
$541.00
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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 403
tekmar - Performance Series - 403 - House Control - Compatible with tekmarNet 2 - Four Zone Pumps - Outdoor Temperature Reset - Boiler - DHW - Setpoint - Mixing
$997.00
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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 153
tekmar - Classic Series - 153 - Mixing Setpoint Control - Floating Action
$428.00
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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 261-0
tekmar - Classic Series - 261 - Boiler Control - Outdoor Temperature Reset - Two Stage - Setpoint
$587.00
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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 084
tekmar - 084 - Indoor Sensor - Flush Mount
$51.00
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Learn More About Tekmar 284
tekmar - Designer Series - 284 - Boiler Control - Compatible with tekmarNet 4 - Outdoor Temperature Reset - Four Modulating or Two Stage Boilers - Domestic Hot Water - Setpoint - Building Automation System
$2,715.00
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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.
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Learn More About Tekmar 078
tekmar - 078 - Universal Sensor - 15' Wire
$91.00
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Learn More About Tekmar 082
tekmar - 082 - Universal Sensor - 8' Wire
$42.00
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Learn More About Hydrolevel 3250
Hydrolevel HydroStat 3250 Universal Temperature Limit, Boiler Reset and Low Water Cut-Off for Oil-Fired Boilers, 120 VAC
$222.00
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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 Buderus 7738003610
Buderus - 7738003610 - Hydrostat Outdoor Sensor Kit - For G115WS and G215 Boilers
$58.00
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Learn More About Tekmar 013
tekmar - 013 - Transformer - 115V AC to 24V AC - 96 VA
$117.00
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Learn More About Burnham 104589-01
$284.00
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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 007
tekmar - 007 - Adaptor Plate - For Enclosure G & J
$23.00
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Learn More About Tekmar 003
$64.00
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