Aquastats & Wells

  • $97.95 each
    $281.85 box of 3
    $93.95 each
    196
    Thu, Dec 27
    346
    QtyArrives
    196 Thu, Dec 27
    150 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • High Limit Vertical Mount Aquastat Relay 15°F Differential
    SKU: L8148E1265
    Brand: Honeywell
    (75)
    $211.95 each
    $611.85 box of 3
    $203.95 each
    207
    Thu, Dec 27
    586
    QtyArrives
    207 Thu, Dec 27
    379 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • High Limit Horiz. Mount Aquastat Relay 8°F Differential
    SKU: L8148A1017
    Brand: Honeywell
    (66)
    $166.95 each
    $643.80 box of 4
    $160.95 each
    158
    Thu, Dec 27
    443
    QtyArrives
    158 Thu, Dec 27
    285 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • 140-240F AquaStat Relay w/ Vent Damper Connection
    SKU: L8148E1257
    Brand: Honeywell
    (28)
    $226.95 each
    $650.85 box of 3
    $216.95 each
    169
    Thu, Dec 27
    246
    QtyArrives
    169 Thu, Dec 27
    77 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • $96.95 each
    $371.80 box of 4
    $92.95 each
    150
    Fri, Dec 28
    150
    QtyArrives
    150 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • 120 Vac Oil Electronic Aquastat
    SKU: L7224U1002
    Brand: Honeywell
    (35)
    $145.95 each
    $422.85 box of 3
    $140.95 each
    185
    Thu, Dec 27
    801
    QtyArrives
    185 Thu, Dec 27
    616 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • Aquastat Relay 8°F Differential
    SKU: L8148J1009
    Brand: Honeywell
    (41)
    $192.95 each
    $743.80 box of 4
    $185.95 each
    94
    Thu, Dec 27
    327
    QtyArrives
    94 Thu, Dec 27
    233 Fri, Dec 28
    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
    26
    Thu, Dec 27
    319
    QtyArrives
    26 Thu, Dec 27
    293 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • 1/2" Aquastat Well
    SKU: 121371A
    Brand: Honeywell
    (10)
    $27.45 each
    $105.40 box of 4
    $26.35 each
    124
    Thu, Dec 27
    377
    QtyArrives
    124 Thu, Dec 27
    253 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • High/Low Limit Circulator Horiz. Mount Aquastat 100-240°F
    SKU: L6006A1145
    Brand: Honeywell
    (13)
    $103.95 each
    $395.80 box of 4
    $98.95 each
    112
    Thu, Dec 27
    225
    QtyArrives
    112 Thu, Dec 27
    113 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • $148.95 each
    $428.85 box of 3
    $142.95 each
    45
    Thu, Dec 27
    265
    QtyArrives
    45 Thu, Dec 27
    220 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • $214.95 each
    $620.85 box of 3
    $206.95 each
    62
    Thu, Dec 27
    184
    QtyArrives
    62 Thu, Dec 27
    122 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • $109.95 each
    $423.80 box of 4
    $105.95 each
    36
    Thu, Dec 27
    50
    QtyArrives
    36 Thu, Dec 27
    14 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • High Limit, Manual Aquastat Controller 130°F to 270°F
    SKU: L4006E1000
    Brand: Honeywell
    (1)
    $98.95 each
    1
    Thu, Dec 27
    151
    QtyArrives
    1 Thu, Dec 27
    150 Fri, Dec 28
    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
    63
    Thu, Dec 27
    133
    QtyArrives
    63 Thu, Dec 27
    70 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • $55.95 each
    39
    Thu, Dec 27
    194
    QtyArrives
    39 Thu, Dec 27
    155 Fri, Dec 28
    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
    12
    Thu, Dec 27
    12
    QtyArrives
    12 Thu, Dec 27
    Questions? Call 1-888-757-4774
  • High Limit Vertical Mount Aquastat Relay 15°F Differential
    SKU: L8148E1299
    Brand: Honeywell
    (13)
    $223.95 each
    $644.85 box of 3
    $214.95 each
    47
    Thu, Dec 27
    222
    QtyArrives
    47 Thu, Dec 27
    175 Fri, Dec 28
    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
    26
    Thu, Dec 27
    26
    QtyArrives
    26 Thu, Dec 27
    Questions? Call 1-888-757-4774
  • $139.95 each
    $404.85 box of 3
    $134.95 each
    33
    Fri, Dec 28
    33
    QtyArrives
    33 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • High Limit Horiz. Mount Triple Aquastat Relay
    SKU: L8124C1003
    Brand: Honeywell
    (14)
    $226.95 each
    $653.85 box of 3
    $217.95 each
    32
    Thu, Dec 27
    80
    QtyArrives
    32 Thu, Dec 27
    48 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • $107.95 each
    $415.80 box of 4
    $103.95 each
    10
    Thu, Dec 27
    53
    QtyArrives
    10 Thu, Dec 27
    43 Fri, Dec 28
    Questions? Call 1-888-757-4774
  • $31.95 each
    $183.90 box of 6
    $30.65 each
    23
    Thu, Dec 27
    48
    QtyArrives
    23 Thu, Dec 27
    25 Mon, Dec 31 – Wed, Jan 2
    Questions? Call 1-888-757-4774
  • $129.95 each
    $371.85 box of 3
    $123.95 each
    21
    Thu, Dec 27
    34
    QtyArrives
    21 Thu, Dec 27
    13 Fri, Dec 28
    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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