Aquastats & Wells

  • $97.95 each
    $281.85 box of 3
    $93.95 each
    392
    Fri, May 3
    392
    QtyArrives
    392 Fri, May 3
    Questions? Call 1-888-757-4774
  • High Limit Vertical Mount Aquastat Relay 15°F Differential
    SKU: L8148E1265
    Brand: Honeywell
    (77)
    $211.95 each
    $599.85 box of 3
    $199.95 each
    229
    Fri, May 3
    229
    QtyArrives
    229 Fri, May 3
    Questions? Call 1-888-757-4774
  • High Limit Horiz. Mount Aquastat Relay 8°F Differential
    SKU: L8148A1017
    Brand: Honeywell
    (69)
    $166.95 each
    $639.80 box of 4
    $159.95 each
    200
    Fri, May 3
    200
    QtyArrives
    200 Fri, May 3
    Questions? Call 1-888-757-4774
  • 140-240F AquaStat Relay w/ Vent Damper Connection
    SKU: L8148E1257
    Brand: Honeywell
    (32)
    $229.95 each
    $659.85 box of 3
    $219.95 each
    79
    Fri, May 3
    79
    QtyArrives
    79 Fri, May 3
    Questions? Call 1-888-757-4774
  • 120 Vac Oil Electronic Aquastat
    SKU: L7224U1002
    Brand: Honeywell
    (35)
    $145.95 each
    $419.85 box of 3
    $139.95 each
    468
    Fri, May 3
    468
    QtyArrives
    468 Fri, May 3
    Questions? Call 1-888-757-4774
  • $96.95 each
    $371.80 box of 4
    $92.95 each
    419
    Fri, May 3
    419
    QtyArrives
    419 Fri, May 3
    Questions? Call 1-888-757-4774
  • Aquastat Relay 8°F Differential
    SKU: L8148J1009
    Brand: Honeywell
    (44)
    $195.95 each
    $751.80 box of 4
    $187.95 each
    214
    Fri, May 3
    214
    QtyArrives
    214 Fri, May 3
    Questions? Call 1-888-757-4774
  • 3/4" Aquastat Well
    SKU: 121371B
    Brand: Honeywell
    (10)
    $28.75 each
    $109.80 box of 4
    $27.45 each
    268
    Fri, May 3
    268
    QtyArrives
    268 Fri, May 3
    Questions? Call 1-888-757-4774
  • 1/2" Aquastat Well
    SKU: 121371A
    Brand: Honeywell
    (10)
    $27.45 each
    $105.00 box of 4
    $26.25 each
    374
    Fri, May 3
    374
    QtyArrives
    374 Fri, May 3
    Questions? Call 1-888-757-4774
  • High/Low Limit Circulator Horiz. Mount Aquastat 100-240°F
    SKU: L6006A1145
    Brand: Honeywell
    (14)
    $103.95 each
    $399.80 box of 4
    $99.95 each
    252
    Fri, May 3
    252
    QtyArrives
    252 Fri, May 3
    Questions? Call 1-888-757-4774
  • $57.95 each
    190
    Fri, May 3
    190
    QtyArrives
    190 Fri, May 3
    Questions? Call 1-888-757-4774
  • $148.95 each
    $428.85 box of 3
    $142.95 each
    241
    Fri, May 3
    241
    QtyArrives
    241 Fri, May 3
    Questions? Call 1-888-757-4774
  • $112.95 each
    $431.80 box of 4
    $107.95 each
    86
    Fri, May 3
    86
    QtyArrives
    86 Fri, May 3
    Questions? Call 1-888-757-4774
  • High Limit, Manual Aquastat Controller 130°F to 270°F
    SKU: L4006E1000
    Brand: Honeywell
    (1)
    $99.95 each
    203
    Fri, May 3
    203
    QtyArrives
    203 Fri, May 3
    Questions? Call 1-888-757-4774
  • $214.95 each
    $617.85 box of 3
    $205.95 each
    138
    Fri, May 3
    138
    QtyArrives
    138 Fri, May 3
    Questions? Call 1-888-757-4774
  • High/Low Limit Aquastat 40°F to 180°F Range
    SKU: L4006A1959
    Brand: Honeywell
    (9)
    $109.95 each
    $423.80 box of 4
    $105.95 each
    206
    Fri, May 3
    206
    QtyArrives
    206 Fri, May 3
    Questions? Call 1-888-757-4774
  • 3/4" Aquastat Well
    SKU: 121371B-OMI
    Brand: OMI
    $11.65 each
    $273.75 box of 25
    $10.95 each
    120
    Fri, May 3
    120
    QtyArrives
    120 Fri, May 3
    Questions? Call 1-888-757-4774
  • 1/2" Aquastat Well
    SKU: 121371A-OMI
    Brand: OMI
    (2)
    $9.45 each
    $223.75 box of 25
    $8.95 each
    14
    Fri, May 3
    14
    QtyArrives
    14 Fri, May 3
    Questions? Call 1-888-757-4774
  • High Limit Aquastat 130°F to 270°F Range Manual Reset
    SKU: L4006E1067
    Brand: Honeywell
    (4)
    $152.95 each
    $587.80 box of 4
    $146.95 each
    107
    Fri, May 3
    107
    QtyArrives
    107 Fri, May 3
    Questions? Call 1-888-757-4774
  • $141.95 each
    $407.85 box of 3
    $135.95 each
    115
    Fri, May 3
    115
    QtyArrives
    115 Fri, May 3
    Questions? Call 1-888-757-4774
  • High Limit Vertical Mount Aquastat Relay 15°F Differential
    SKU: L8148E1299
    Brand: Honeywell
    (13)
    $223.95 each
    $641.85 box of 3
    $213.95 each
    207
    Fri, May 3
    207
    QtyArrives
    207 Fri, May 3
    Questions? Call 1-888-757-4774
  • High Limit Horiz. Mount Triple Aquastat Relay
    SKU: L8124C1003
    Brand: Honeywell
    (15)
    $226.95 each
    $650.85 box of 3
    $216.95 each
    52
    Fri, May 3
    52
    QtyArrives
    52 Fri, May 3
    Questions? Call 1-888-757-4774
  • $108.95 each
    $419.80 box of 4
    $104.95 each
    119
    Fri, May 3
    119
    QtyArrives
    119 Fri, May 3
    Questions? Call 1-888-757-4774
  • $31.95 each
    $183.90 box of 6
    $30.65 each
    5
    Fri, May 3
    47
    QtyArrives
    5 Fri, May 3
    42 Tue, May 7 – Wed, May 8
    Questions? Call 1-888-757-4774

Resources

Videos

Articles

  • An aquastat is a device used to control water temperature in hydronic heating systems. It has both high and low limit temperature controls to prevent boilers from firing too frequently. Aquastats are a type of thermostat that senses the temperature of the water and activates or deactivates the burner by controlling the electrical circuit. The temperature of the water is maintained by the aquastat within its preset limits. When the thermostat demands heat, the heating mechanism activates and heat will be sent until the maximum temperature limit is reached. At that point, the mechanism will turn off. If the boiler's water temperature drops below the max temperature limit, the boiler will re-fire. The boiler will also re-fire when the boiler water temperature goes below a range around the low limit. This low limit is intended for tankless domestic hot water, ensuring that boiler water remains warm enough to heat domestic hot water.

    Aquastat wells are used in conjunction with aquastats. Immersion wells are used with Aquastat Temperature Controllers to hold the temperature sensing bulb in the controlled medium. They also prevent leakage of the controlled medium. Honeywell aquastat wells are popular and are available in 1/2" and 3/4" sizes.

    Our website offers a wide selection of Honeywell, White Rodgers, and Taco aquastats and wells for regulating the temperature of liquids in boilers, storage tanks, and other applications where temperature control is required.
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