Switching Relays

We offer switching relays from the leading manufacturers TACO and Honeywell, at competitive prices. Switching Relays control the functioning of circulator Pumps.

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  • 1 Zone Switching Relay View Specs
    • SKU: SR501-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (624 Avail)

    $49.85 / each

    $193.40 / box
    4 x $48.35

     
  • 2 Zone Switching Relay View Specs
    • SKU: SR502-2
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (2 Avail)

    $111.95 / each

     
  • 2 Zone Switching Relay View Specs
    • SKU: SR502-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (319 Avail)

    $114.95 / each

    $332.55 / box
    3 x $110.85

    Free Shipping - Boxes Only
  • 3 Zone Switching Relay View Specs
    • SKU: SR503-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (579 Avail)

    $124.95 / each

    $359.55 / box
    3 x $119.85

    Free Shipping - Boxes Only
  • 4 Zone Switching Relay View Specs
    • SKU: SR504-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (395 Avail)

    $174.95 / each

    $337.70 / box
    2 x $168.85

    Free Shipping - Boxes Only
  • 6 Zone Switching Relay View Specs
    • SKU: SR506-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (183 Avail)

    $202.95 / each

    $389.70 / box
    2 x $194.85

    Free Shipping - Boxes Only
  • 3 Zone Switching Relay w/ Priority View Specs
    • SKU: SR503-EXP-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (225 Avail)

    $159.95 / each

    $310.30 / box
    2 x $155.15

    Free Shipping - Boxes Only
  • 1 Zone Switching Relay View Specs
    • SKU: SR501-EXP-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (355 Avail)

    $103.95 / each

     
  • 4 Zone Switching Relay w/ Priority View Specs
    • SKU: SR504-EXP-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (89 Avail)

    $188.95 / each

    $365.70 / box
    2 x $182.85

    Free Shipping - Boxes Only
  • 6 Zone Switching Relay w/ Priority View Specs
    • SKU: SR506-EXP-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (116 Avail)

    $218.55 / each

    $421.70 / box
    2 x $210.85

    Free Shipping - Boxes Only
  • FuelMizer SR501-OR-4 Switching Relay with Outdoor Reset View Specs
    • SKU: SR501-OR-4
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (24 Avail)

    $159.95 / each

    $465.45 / box
    3 x $155.15

    Free Shipping - Boxes Only
  • 24 Volt Replacement Relay View Specs
    • SKU: SR024-001RP
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (122 Avail)

    $19.85 / each

    $115.50 / box
    6 x $19.25

     
  • 120 Volt Replacement Relay View Specs
    • SKU: SR120-001RP
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (56 Avail)

    $19.85 / each

     
  • Universal Relay Replacement View Specs
    • SKU: SR501-845RP
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (19 Avail)

    $40.45 / each

     
  • Taco Boiler Reset Control 2-Stage View Specs
    • SKU: PC702-1
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (4 Avail)

    $272.95 / each

     
  • Taco Boiler Reset Control View Specs
    • SKU: PC700-2
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (22 Avail)

    $257.95 / each

     
  • Taco PC705 Variable Speed Pump Control View Specs
    • SKU: PC705-2
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (5 Avail)

    $296.95 / each

     
  • Replacement Fuse - 1 Amp (10 Pack) View Specs
    • SKU: SR1A-001RP
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (19 Avail)

    $12.95 / each

    $125.50 / box
    10 x $12.55

     
  • Replacement Fuse - 5 Amp (10 Pack) View Specs
    • SKU: SR5A-005RP
    • Brand: Taco
    In Stock!
    Ships in 24-48 Hrs (41 Avail)

    $12.95 / each

    $125.50 / box
    10 x $12.55

     
  • Universal Switching Relay w/ Internal Transformer View Specs
    • SKU: R8845U1003
    • Brand: Honeywell
    In Stock!
    Ships in 24-48 Hrs (68 Avail)

    $47.25 / each

    $91.90 / box
    2 x $45.95

     

More About Switching Relays

Switching relays are used to control the flow of water in a heating system by monitoring temperatures and adjusting boiler water temperature to match the demand. They are used in coordination with circulator pumps and programmable thermostats to control zoning in a hydronic heating system. This makes them ideal for indirect water heaters and priority zoning applications. They maximize efficiency and reduce fuel usage, which saves money. In addition, they provide intermediate switching of a line voltage device from a low voltage controller. Switching relays are available in one to six zone models, and if additional zones are required expandable models provide the ability to expand up to 20 zones.

We offer a wide selection of Taco, Honeywell , Argo, Bell & Gossett, and Erie switching relays for residential and light commercial applications.

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