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Differential

Adjustable (27)
Fixed (20)
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Contacts Break on Temp Rise (23)
SPDT (5)
SPST (37)

Min Temp (F)

100°F (1)
40°F (1)
65°F (1)
100°F (19)
110°F (10)
120°F (2)
130°F (9)
180°F (2)

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135°F (1)
180°F (2)
200°F (5)
220°F (1)
240°F (29)
240°F (1)
270°F (7)
270°F (1)

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Accessory (5)
Circulator Control (14)
High Limit (40)
Low Limit (20)
Oil Aquastat Controller (1)
Strap-On (2)
Triple Aquastat Relay (5)

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(45)
(2)
(1)

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$40 to $45 (2)
$50 to $60 (1)
$70 to $80 (1)
$80 to $90 (1)
$100 to $200 (15)
$200 to $300 (17)
$300 to $400 (15)
$400 to $500 (3)
$1000 to $1500 (2)

Resideo Aquastats

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Product Image of High Limit Vertical Mount Aquastat Relay, 15-Degree (F) Differential, L8148E1265
High Limit Vertical Mount Aquastat Relay, 15-Degree (F) Differential, L8148E1265
SKU: L8148E1265
Resideo
SKU: L8148E1265
Brand: Resideo
(136)
$376.06 each
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Product Image of High or Low Limit & Circulator Strap-On Aquastat, 65-200-Degree(F) range, 5-30-Degree(F) Adj Differential, L6006C1018
$166.64 each
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Product Image of 120 Vac Oil Electronic Aquastat, L7224U1002
120 Vac Oil Electronic Aquastat, L7224U1002
SKU: L7224U1002
Resideo
SKU: L7224U1002
Brand: Resideo
(49)
$241.84 each
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Product Image of High Limit Horizontal Mount Aquastat Relay, 8-Degree(F) differential, L8148A1017
$280.87 each
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Product Image of High or Low Limit Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L4006A2007
$154.80 each
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Product Image of High Limit Immersion Aquastat, 100-200-Degree (F) Range, L4080B1352
$88.81 each
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Product Image of High Limit, Manual Aquastat Controller w/ 130-Degree(F) to 270-Degree(F) Operating Temp, L4006E1000
$146.90 each
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Product Image of Aquastat Relay, 8-Degree(F) Differential, L8148J1009
Aquastat Relay, 8-Degree(F) Differential, L8148J1009
SKU: L8148J1009
Resideo
SKU: L8148J1009
Brand: Resideo
(72)
$345.67 each
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Product Image of High Limit Strap-On Aquastat, 100-240-Degree (F) range, Manual Reset, L4006H1004
$266.73 each
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Product Image of High or Low Limit & Circulator, Horizontal Mount Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L6006A1145
$185.36 each
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Product Image of High or Low Limit Remote Bulb Aquastat, 100-240-Degree (F), 5-30-Degree (F) Adj Differential, L4008A1015
$188.67 each
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Product Image of High Limit, Manual Reset Aquastat Controller w/ 130-Degree (F) to 270-Degree (F) Operating Temp, L4008E1040
$162.21 each
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Product Image of High Limit Protection, Low Limit & Circulator Triple Aquastat Relay, High = 10-Degree(F), Low Limit = 10-25-Degree Adj Differential, L8124A1007
$373.74 each
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Product Image of High Limit Vertical Mount Aquastat Relay, 15-Degree(F) differential w/ 50VA Transformer, L8148E1299
$366.49 each
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Product Image of High or Low Limit Aquastat, 40-Degree(F) to 180-Degree(F) Range, L4006A1959
$175.79 each
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Product Image of High or Low Limit Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L4006A1967
$185.97 each
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Product Image of High Limit Horizontal Mount Triple Aquastat Relay, High = 10-Degree(F) Diff, Low Limit = 10-25-Degree Adj Differential, L8124C1003
$377.34 each
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Product Image of High or Low Limit Aquastat, 100-240-Degree(F) range, 5-Degree(F) to 30-Degree(F) Differential, L4006A1678
$176.43 each
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Product Image of High Limit Aquastat, 130-270-Degree (F) range, Manual Reset, L4006E1067
$257.23 each
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Product Image of High or Low Limit & Circulator Aquastat, 100 - 240-Degree(F) Range, 5 - 30-Degree(F) Adj Differential, L6006A1244
$175.39 each
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Product Image of High & Low Limit Aquastat, High = 10°F Diff, Low = 10-25-Degree Adj Differential, L4081A1023
$314.50 each
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Product Image of High Limit Remote Bulb Aquastat, 100-200-Degree (F) Range, Manual Reset, L4008E1313
$252.50 each
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Product Image of Circulator Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L4006B1163
$157.36 each
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Product Image of High Limit Remote Bulb Aquastat, 100-240-Degree (F) range, Manual Reset, L4008E1305
$273.46 each
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Product Image of Sensor Assembly w/ 12" Leads, 50001464-001
Sensor Assembly w/ 12" Leads, 50001464-001
SKU: 50001464-001
Resideo
SKU: 50001464-001
Brand: Resideo
(4)
$43.81 each
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Product Image of High Limit, Manual Reset Aquastat Controller w/ 100-Degree (F) to 240-Degree (F) Operating Temp, L4006E1117
$297.13 each
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Product Image of High Limit Remote Bulb Aquastat, 130-270-Degree (F) range, Manual Reset, L4008E1156
$233.73 each
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Product Image of High Limit Triple Vertical Mount Aquastat Relay, High = 10-Degree(F) Diff, Low = 10-25-Degree(F) Adj Differential, L8124E1016
$412.33 each
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Product Image of Flush Mount Sensor Assembly w/ 48" Lead, 50001464-005
Flush Mount Sensor Assembly w/ 48" Lead, 50001464-005
SKU: 50001464-005
Resideo
SKU: 50001464-005
Brand: Resideo
(3)
$42.39 each
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Product Image of Circulator Remote Bulb Aquastat, 100-240-Degree (F), 5-30-Degree (F) Adj Differential, L4008B1013
$205.31 each
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Product Image of High Limit Protection, Low Limit & Circulator Vertical Mount Triple Aquastat Relay, High=10-Degree(F), Low Limit=10-25-Degree Adj Differential, L8124A1015
$377.34 each
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Product Image of High or Low Limit Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L4006A1017
$239.27 each
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Product Image of High Limit Aquastat Controller, 100-180-Degree(F) Range, 5-Degree(F) Differential, L8100B1128
$365.60 each
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Product Image of High or Low Limit Aquastat, 100-240-Degree(F) range, 5-Degree(F) Differential, L4006A1009
$220.96 each
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Product Image of Circulator Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L4006B1155
$191.79 each
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Product Image of High & Low Limit Aquastat, 10-Degree(F) Fixed, 10-25-Degree(F) Differential, L6081A1036
$331.50 each
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Product Image of Low Limit & Circulator Remote Bulb Aquastat, 100-240-Degree(F) range, 5-30-Degree Adj Differential, L6008A1192
$300.91 each
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Product Image of High Limit Aquastat, 100-200-Degree (F) range, Manual Reset, L4006E1125
$297.19 each
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Product Image of High Limit & Circulator Aquastat, 10-Degree(F) High Limit, 10-Degree(F) to 25-Degree(F) Low Limit Adj Differential, L4081B1047
$312.20 each
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Product Image of High or Low Limit & Circulator Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L6006A1012
$252.26 each
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Product Image of High Limit, Manual Aquastat Controller w/ 130-Degree (F) to 270-Degree (F) Operating Temp, L4006E1109
$217.61 each
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Product Image of Flush Mount Sensor Assembly w/ 36" Lead, 50001464-004
Flush Mount Sensor Assembly w/ 36" Lead, 50001464-004
SKU: 50001464-004
Resideo
SKU: 50001464-004
Brand: Resideo
(1)
$59.99 each
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Product Image of High Limit & Circulator Aquastat, 10-Degree (F) Differential, L4081B1096
$304.03 each
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Product Image of Circulator Aquastat, 100-240-Degree(F) range, 5-Degree(F) Differential, L4006B1007
$228.94 each
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Product Image of Combination Protector Relay & Hydronic Heating Control w/ High Limit: 10 F fixed, Low Limit/Circulator (10F to 25F), R8182D1079
$1,100.14 each
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Product Image of Combo Protector Relay & Hydronic Heating Control w/ High Limit: 10F fixed, Low Limit/Circulator, Junction Box Mount (10F to 25F), R8182H1070
$1,122.09 each
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Product Image of High Limit Aquastat, 130-270-Degree (F) range, Manual Reset, L4006E1091
$234.93 each
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Product Image of High Limit Triple Vertical Mount Aquastat Relay, High = 10-Degree(F) Diff, Low = 10-25-Degree(F) Adj Differential, L8124G1020
$405.86 each
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