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Aquastats & Wells
Lead Content Warning
Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.
Lead Content Warning
This product does not comply with the Safe Drinking Water Act, which requires that products used in any system providing water for human consumption (drinking or cooking) to meet low-lead standards. Please check the box below to confirm you are aware that this item is for non-potable water applications only.
You must agree to this statement in order to purchase this product.
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High or Low Limit & Circulator Strap-On Aquastat, 65°F to 200°FSKU: L6006C1018Brand: Honeywell
(35)387Tue, May 7387Qty Arrives 387 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Vertical Mount Aquastat Relay 15°F DifferentialSKU: L8148E1265Brand: Honeywell(77)247Tue, May 7247Qty Arrives 247 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Horiz. Mount Aquastat Relay 8°F DifferentialSKU: L8148A1017Brand: Honeywell(69)191Tue, May 7191Qty Arrives 191 Tue, May 7 Questions? Call 1-888-757-4774 -
140-240F AquaStat Relay w/ Vent Damper ConnectionSKU: L8148E1257Brand: Honeywell(32)78Tue, May 778Qty Arrives 78 Tue, May 7 Questions? Call 1-888-757-4774 -
120 Vac Oil Electronic AquastatSKU: L7224U1002Brand: Honeywell(35)463Tue, May 7463Qty Arrives 463 Tue, May 7 Questions? Call 1-888-757-4774 -
High or Low Limit Aquastat 100-240°F Range 5-30°F Adj DifferentialSKU: L4006A2007Brand: Honeywell(12)414Tue, May 7414Qty Arrives 414 Tue, May 7 Questions? Call 1-888-757-4774 -
Aquastat Relay 8°F DifferentialSKU: L8148J1009Brand: Honeywell(44)231Tue, May 7231Qty Arrives 231 Tue, May 7 Questions? Call 1-888-757-4774 -
3/4" Aquastat WellSKU: 121371BBrand: Honeywell(10)263Tue, May 7263Qty Arrives 263 Tue, May 7 Questions? Call 1-888-757-4774 -
1/2" Aquastat WellSKU: 121371ABrand: Honeywell(10)365Tue, May 7365Qty Arrives 365 Tue, May 7 Questions? Call 1-888-757-4774 -
High/Low Limit Circulator Horiz. Mount Aquastat 100-240°FSKU: L6006A1145Brand: Honeywell(14)247Tue, May 7247Qty Arrives 247 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Immersion Aquastat, 100-200°F Range, 8°F DifferentialSKU: L4080B1352Brand: Honeywell(2)186Tue, May 7186Qty Arrives 186 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Strap-On Aquastat, Manual Reset 100°F to 240°FSKU: L4006H1004Brand: Honeywell(6)241Tue, May 7241Qty Arrives 241 Tue, May 7 Questions? Call 1-888-757-4774 -
High or Low Limit Remote Bulb Aquastat, 100-240°F 5-30°F Adj. DifferentialSKU: L4008A1015Brand: Honeywell(10)77Tue, May 777Qty Arrives 77 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit, Manual Aquastat Controller 130°F to 270°FSKU: L4006E1000Brand: Honeywell(1)200Tue, May 7200Qty Arrives 200 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Protection Low Limit & Circulator Triple Aquastat RelaySKU: L8124A1007Brand: Honeywell(13)133Tue, May 7133Qty Arrives 133 Tue, May 7 Questions? Call 1-888-757-4774 -
High/Low Limit Aquastat 40°F to 180°F RangeSKU: L4006A1959Brand: Honeywell(9)227Tue, May 7227Qty Arrives 227 Tue, May 7 Questions? Call 1-888-757-4774 -
3/4" Aquastat WellSKU: 121371B-OMIBrand: OMI120Tue, May 7120Qty Arrives 120 Tue, May 7 Questions? Call 1-888-757-4774 -
1/2" Aquastat WellSKU: 121371A-OMIBrand: OMI(2)14Tue, May 714Qty Arrives 14 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Aquastat 130°F to 270°F Range Manual ResetSKU: L4006E1067Brand: Honeywell(4)104Tue, May 7104Qty Arrives 104 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Remote Bulb Aquastat, Manual Reset 130°F to 270°FSKU: L4008E1156Brand: Honeywell(2)110Tue, May 7110Qty Arrives 110 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Vertical Mount Aquastat Relay 15°F DifferentialSKU: L8148E1299Brand: Honeywell(13)209Tue, May 7209Qty Arrives 209 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Horiz. Mount Triple Aquastat RelaySKU: L8124C1003Brand: Honeywell(15)52Tue, May 752Qty Arrives 52 Tue, May 7 Questions? Call 1-888-757-4774 -
High or Low Limit Aquastat 100-240°F Range 5°F to 30°F DifferentialSKU: L4006A1678Brand: Honeywell(4)119Tue, May 7119Qty Arrives 119 Tue, May 7 Questions? Call 1-888-757-4774 -
Temperature Aquastat for "00" Series Circulators (95°F to 115°F)SKU: 563-2Brand: Taco(3) -
High or Low Limit Aquastat 100-240°F Range 5-30°F Adj DifferentialSKU: L4006A1967Brand: Honeywell(4)143Tue, May 7143Qty Arrives 143 Tue, May 7 Questions? Call 1-888-757-4774 -
Well Immersion Control 100°F to 240°F Range 7°F to 45°F DifferentialSKU: 1131-102Brand: White Rodgers(7)28Tue, May 728Qty Arrives 28 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit, Manual Reset Aquastat Controller 130°F to 270°FSKU: L4008E1040Brand: Honeywell(1)21Tue, May 721Qty Arrives 21 Tue, May 7 Questions? Call 1-888-757-4774 -
Circulator Aquastat 5°F to 30°F Adj. Differential 100°F to 240°F RangeSKU: L4006B1163Brand: Honeywell(8)58Tue, May 758Qty Arrives 58 Tue, May 7 Questions? Call 1-888-757-4774 -
3/4" Long Aquastat WellSKU: 121371MBrand: Honeywell(1)237Tue, May 7237Qty Arrives 237 Tue, May 7 Questions? Call 1-888-757-4774 -
High Limit Remote Bulb Aquastat, Manual Reset 100° to 240°FSKU: L4008E1305Brand: Honeywell33Tue, May 733Qty Arrives 33 Tue, May 7 Questions? Call 1-888-757-4774
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More About Aquastats & Wells
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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