Aquastats & Wells

  • $97.95 each
    $281.85 box of 3
    $93.95 each
    387
    Tue, May 7
    387
    QtyArrives
    387 Tue, May 7
    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
    247
    Tue, May 7
    247
    QtyArrives
    247 Tue, May 7
    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
    191
    Tue, May 7
    191
    QtyArrives
    191 Tue, May 7
    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
    78
    Tue, May 7
    78
    QtyArrives
    78 Tue, May 7
    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
    463
    Tue, May 7
    463
    QtyArrives
    463 Tue, May 7
    Questions? Call 1-888-757-4774
  • $96.95 each
    $371.80 box of 4
    $92.95 each
    414
    Tue, May 7
    414
    QtyArrives
    414 Tue, May 7
    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
    231
    Tue, May 7
    231
    QtyArrives
    231 Tue, May 7
    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
    263
    Tue, May 7
    263
    QtyArrives
    263 Tue, May 7
    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
    365
    Tue, May 7
    365
    QtyArrives
    365 Tue, May 7
    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
    247
    Tue, May 7
    247
    QtyArrives
    247 Tue, May 7
    Questions? Call 1-888-757-4774
  • $57.95 each
    186
    Tue, May 7
    186
    QtyArrives
    186 Tue, May 7
    Questions? Call 1-888-757-4774
  • $148.95 each
    $428.85 box of 3
    $142.95 each
    241
    Tue, May 7
    241
    QtyArrives
    241 Tue, May 7
    Questions? Call 1-888-757-4774
  • $112.95 each
    $431.80 box of 4
    $107.95 each
    77
    Tue, May 7
    77
    QtyArrives
    77 Tue, May 7
    Questions? Call 1-888-757-4774
  • High Limit, Manual Aquastat Controller 130°F to 270°F
    SKU: L4006E1000
    Brand: Honeywell
    (1)
    $99.95 each
    200
    Tue, May 7
    200
    QtyArrives
    200 Tue, May 7
    Questions? Call 1-888-757-4774
  • $214.95 each
    $617.85 box of 3
    $205.95 each
    133
    Tue, May 7
    133
    QtyArrives
    133 Tue, May 7
    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
    227
    Tue, May 7
    227
    QtyArrives
    227 Tue, May 7
    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
    Tue, May 7
    120
    QtyArrives
    120 Tue, May 7
    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
    Tue, May 7
    14
    QtyArrives
    14 Tue, May 7
    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
    104
    Tue, May 7
    104
    QtyArrives
    104 Tue, May 7
    Questions? Call 1-888-757-4774
  • $141.95 each
    $407.85 box of 3
    $135.95 each
    110
    Tue, May 7
    110
    QtyArrives
    110 Tue, May 7
    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
    209
    Tue, May 7
    209
    QtyArrives
    209 Tue, May 7
    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
    Tue, May 7
    52
    QtyArrives
    52 Tue, May 7
    Questions? Call 1-888-757-4774
  • $108.95 each
    $419.80 box of 4
    $104.95 each
    119
    Tue, May 7
    119
    QtyArrives
    119 Tue, May 7
    Questions? Call 1-888-757-4774
  • $31.95 each
    $183.90 box of 6
    $30.65 each
    5
    Tue, May 7
    37
    QtyArrives
    5 Tue, May 7
    32 Wed, May 8 – Thu, May 9
    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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