Apply to be a TradeMaster!
Filter menu expanded

Filters

90 items
Reset

SORT

Product Availability
–

Show In Stock Only (88)

Brand
–

Honeywell Home (3)
OMI Parts (2)
Resideo (68)
Taco (3)
White Rodgers (14)

Review Score
–

(62)
(6)
(2)

Price Range
–

$15 to $20 (2)
$35 to $40 (1)
$45 to $50 (5)
$50 to $60 (6)
$60 to $70 (5)
$70 to $80 (2)
$80 to $90 (1)
$90 to $100 (2)
$100 to $200 (19)
$200 to $300 (25)

Aquastat Controllers

90 items
Grid
List
Compare
Product Image of 1/2" Stainless Steel Aquastat Well
1/2" Stainless Steel Aquastat Well
SKU: 121371E
Resideo
SKU: 121371E
Brand: Resideo
(2)
$276.40 each
In Stock
Get 1 by Tue, Jul 21
In Stock
Get 1 by Tue, Jul 21
Compare
Product Image of Low Limit & Circulator Remote Bulb Aquastat, 100-240-Degree(F) range, 5-30-Degree Adj Differential, L6008A1192
Low Limit & Circulator Remote Bulb Aquastat, 100-240-Degree(F) range, 5-30-Degree Adj Differential, L6008A1192
SKU: L6008A1192
Resideo
SKU: L6008A1192
Brand: Resideo
(2)
$320.47 each
In Stock
Get 4 by Tue, Jul 21
In Stock
Get 4 by Tue, Jul 21
Compare
Product Image of High Limit & Circulator Aquastat, 10-Degree(F) High Limit, 10-Degree(F) to 25-Degree(F) Low Limit Adj Differential, L4081B1047
High Limit & Circulator Aquastat, 10-Degree(F) High Limit, 10-Degree(F) to 25-Degree(F) Low Limit Adj Differential, L4081B1047
SKU: L4081B1047
Resideo
SKU: L4081B1047
Brand: Resideo
(7)
$326.24 each
In Stock
Get 4 by Tue, Jul 21
In Stock
Get 4 by Tue, Jul 21
Compare
Product Image of High Limit Aquastat, 100-200-Degree (F) range, Manual Reset, L4006E1125
High Limit Aquastat, 100-200-Degree (F) range, Manual Reset, L4006E1125
SKU: L4006E1125
Resideo
SKU: L4006E1125
Brand: Resideo
(1)
$316.50 each
In Stock
Get 7 by Tue, Jul 21
In Stock
Get 7 by Tue, Jul 21
Compare
Product Image of High or Low Limit & Circulator Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L6006A1012
High or Low Limit & Circulator Aquastat, 100-240-Degree(F) range, 5-30-Degree(F) Adj Differential, L6006A1012
SKU: L6006A1012
Resideo
SKU: L6006A1012
Brand: Resideo
$268.66 each
In Stock
Get 4 by Tue, Jul 21
In Stock
Get 4 by Tue, Jul 21
Compare
Product Image of Solid State Relay with 24-240V Built-in Transformer
Solid State Relay with 24-240V Built-in Transformer
SKU: RT850T-240
Honeywell Home
SKU: RT850T-240
Brand: Honeywell Home
(6)
$126.44 each
In Stock
Get 7 by Tue, Jul 21
In Stock
Get 7 by Tue, Jul 21
Compare
Product Image of Fast Response Control w/ 100-240°F Range and 5-45°F Differential
Fast Response Control w/ 100-240°F Range and 5-45°F Differential
SKU: 1145-33
White Rodgers
SKU: 1145-33
Brand: White Rodgers
(2)
$267.01 each
Backorder
Get it by Tue, Aug 11 - Tue, Aug 18
Backorder
Get it by Tue, Aug 11 - Tue, Aug 18
Compare
Product Image of 1/2" Aquastat Well (3" Long), 123869A
1/2" Aquastat Well (3" Long), 123869A
SKU: 123869A
Resideo
SKU: 123869A
Brand: Resideo
(3)
$53.97 each
In Stock
Get 4 by Tue, Jul 21
In Stock
Get 4 by Tue, Jul 21
Compare
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)
$63.89 each
In Stock
Get 12 by Tue, Jul 21
In Stock
Get 12 by Tue, Jul 21
Compare
Product Image of Limit Control w/ manual reset, 200 F fixed range and 3" insertion, L4029E1029
Limit Control w/ manual reset, 200 F fixed range and 3" insertion, L4029E1029
SKU: L4029E1029
Resideo
SKU: L4029E1029
Brand: Resideo
(1)
$207.31 each
In Stock
Get 6 by Tue, Jul 21
In Stock
Get 6 by Tue, Jul 21
Compare
Product Image of High Limit & Circulator Aquastat, 10-Degree (F) Differential, L4081B1096
High Limit & Circulator Aquastat, 10-Degree (F) Differential, L4081B1096
SKU: L4081B1096
Resideo
SKU: L4081B1096
Brand: Resideo
(1)
$323.79 each
In Stock
Get 2 by Tue, Jul 21
In Stock
Get 2 by Tue, Jul 21
Compare
Product Image of Circulator Aquastat, 100-240-Degree(F) range, 5-Degree(F) Differential, L4006B1007
Circulator Aquastat, 100-240-Degree(F) range, 5-Degree(F) Differential, L4006B1007
SKU: L4006B1007
Resideo
SKU: L4006B1007
Brand: Resideo
(3)
$243.81 each
In Stock
Get 4 by Tue, Jul 21
In Stock
Get 4 by Tue, Jul 21
Compare
Product Image of Combination Protector Relay & Hydronic Heating Control w/ High Limit: 10 F fixed, Low Limit/Circulator (10F to 25F), R8182D1079
Combination Protector Relay & Hydronic Heating Control w/ High Limit: 10 F fixed, Low Limit/Circulator (10F to 25F), R8182D1079
SKU: R8182D1079
Resideo
SKU: R8182D1079
Brand: Resideo
(3)
$1,166.89 each
In Stock
Get 6 by Tue, Jul 21
In Stock
Get 6 by Tue, Jul 21
Compare
Product Image of Well Immersion Control w/ 100-240°F Range (Open On Rise)
Well Immersion Control w/ 100-240°F Range (Open On Rise)
SKU: 11B18-101
White Rodgers
SKU: 11B18-101
Brand: White Rodgers
(5)
$218.78 each
In Stock
Get 1 by Tue, Jul 21
In Stock
Get 1 by Tue, Jul 21
Compare
Product Image of Strap-On Hydronic Temperature Control w/ 10 Degree Fixed Differential
Strap-On Hydronic Temperature Control w/ 10 Degree Fixed Differential
SKU: 11B02-1
White Rodgers
SKU: 11B02-1
Brand: White Rodgers
$177.85 each
In Stock
Get 3 by Tue, Jul 21
In Stock
Get 3 by Tue, Jul 21
Compare
Product Image of Combo Protector Relay & Hydronic Heating Control w/ High Limit: 10F fixed, Low Limit/Circulator, Junction Box Mount (10F to 25F), R8182H1070
Combo Protector Relay & Hydronic Heating Control w/ High Limit: 10F fixed, Low Limit/Circulator, Junction Box Mount (10F to 25F), R8182H1070
SKU: R8182H1070
Resideo
SKU: R8182H1070
Brand: Resideo
(4)
$1,172.59 each
In Stock
Get 4 by Tue, Jul 21
In Stock
Get 4 by Tue, Jul 21
Compare
Product Image of Remote Bulb Control w/ 5-45°F Adjustable Differential
Remote Bulb Control w/ 5-45°F Adjustable Differential
SKU: 11B06-1
White Rodgers
SKU: 11B06-1
Brand: White Rodgers
(1)
$225.42 each
In Stock
Get 2 by Tue, Jul 21
In Stock
Get 2 by Tue, Jul 21
Compare
Product Image of High Limit Aquastat, 130-270-Degree (F) range, Manual Reset, L4006E1091
High Limit Aquastat, 130-270-Degree (F) range, Manual Reset, L4006E1091
SKU: L4006E1091
Resideo
SKU: L4006E1091
Brand: Resideo
(2)
$250.19 each
In Stock
Get 3 by Tue, Jul 21
In Stock
Get 3 by Tue, Jul 21
Compare
Product Image of High Limit Triple Vertical Mount Aquastat Relay, High = 10-Degree(F) Diff, Low = 10-25-Degree(F) Adj Differential, L8124G1020
High Limit Triple Vertical Mount Aquastat Relay, High = 10-Degree(F) Diff, Low = 10-25-Degree(F) Adj Differential, L8124G1020
SKU: L8124G1020
Resideo
SKU: L8124G1020
Brand: Resideo
(1)
$432.24 each
In Stock
Get 2 by Tue, Jul 21
In Stock
Get 2 by Tue, Jul 21
Compare
Product Image of High or Low Limit Remote Bulb Aquastat, 130-270-Degree (F), 5-30-Degree (F) Adj Differential, L4008A1130
High or Low Limit Remote Bulb Aquastat, 130-270-Degree (F), 5-30-Degree (F) Adj Differential, L4008A1130
SKU: L4008A1130
Resideo
SKU: L4008A1130
Brand: Resideo
$367.01 each
In Stock
Get 1 by Tue, Jul 21
In Stock
Get 1 by Tue, Jul 21
Compare
Product Image of Limit Control w/ Manual Reset, 165 F Fixed Range and 3" Insertion, L4029E1219
Limit Control w/ Manual Reset, 165 F Fixed Range and 3" Insertion, L4029E1219
SKU: L4029E1219
Resideo
SKU: L4029E1219
Brand: Resideo
$203.34 each
In Stock
Get 3 by Tue, Jul 21
In Stock
Get 3 by Tue, Jul 21
Compare
Product Image of Aquastat Controller, Unit Pack, L4006G1006
Aquastat Controller, Unit Pack, L4006G1006
SKU: L4006G1006
Resideo
SKU: L4006G1006
Brand: Resideo
$169.26 each
In Stock
Get 3 by Tue, Jul 21
In Stock
Get 3 by Tue, Jul 21
Compare
Product Image of Immersion Well w/ 1/2" Shank (3-1/2" x 7/16")
Immersion Well w/ 1/2" Shank (3-1/2" x 7/16")
SKU: F89-0036
White Rodgers
SKU: F89-0036
Brand: White Rodgers
$51.61 each
In Stock
Get 1 by Wed, Jul 22
In Stock
Get 1 by Wed, Jul 22
Compare
Product Image of Low Limit & Circulator Remote Bulb Aquastat, 100-200-Degree(F) range, 5-30-Degree Adj Differential, L6008A1242
Low Limit & Circulator Remote Bulb Aquastat, 100-200-Degree(F) range, 5-30-Degree Adj Differential, L6008A1242
SKU: L6008A1242
Resideo
SKU: L6008A1242
Brand: Resideo
(1)
$334.26 each
In Stock
Get 3 by Tue, Jul 21
In Stock
Get 3 by Tue, Jul 21
Compare
Product Image of High Limit Triple Horizontal Mount Aquastat Relay, High = 10-Degree(F) Diff, Low = 10-25-Degree(F) Adj Differential, L8124L1011
High Limit Triple Horizontal Mount Aquastat Relay, High = 10-Degree(F) Diff, Low = 10-25-Degree(F) Adj Differential, L8124L1011
SKU: L8124L1011
Resideo
SKU: L8124L1011
Brand: Resideo
(3)
$423.53 each
In Stock
Get 2 by Tue, Jul 21
In Stock
Get 2 by Tue, Jul 21
Compare
Product Image of Copper Well Assembly w/ 3" Insertion, 123870A
Copper Well Assembly w/ 3" Insertion, 123870A
SKU: 123870A
Resideo
SKU: 123870A
Brand: Resideo
(1)
$54.99 each
In Stock
Get 1 by Tue, Jul 21
In Stock
Get 1 by Tue, Jul 21
Compare
Product Image of Limit Control w/ manual reset, 135 F fixed range and 3" insertion, L4029E1011
Limit Control w/ manual reset, 135 F fixed range and 3" insertion, L4029E1011
SKU: L4029E1011
Resideo
SKU: L4029E1011
Brand: Resideo
$207.31 each
In Stock
Get 2 by Wed, Jul 22
In Stock
Get 2 by Wed, Jul 22
Compare
Product Image of Sensor Assembly w/ 24" Lead, 32004955-003
Sensor Assembly w/ 24" Lead, 32004955-003
SKU: 32004955-003
Resideo
SKU: 32004955-003
Brand: Resideo
$77.17 each
In Stock
Get 1 by Tue, Jul 21
In Stock
Get 1 by Tue, Jul 21
Compare
Product Image of Copper Well Assembly w/ 3" Insertion, 3/8" Diameter, 1/2" NPT, 123872A
Copper Well Assembly w/ 3" Insertion, 3/8" Diameter, 1/2" NPT, 123872A
SKU: 123872A
Resideo
SKU: 123872A
Brand: Resideo
$62.25 each
In Stock
Get 12 by Tue, Jul 21
In Stock
Get 12 by Tue, Jul 21
Compare
Product Image of 3/4" Well, 3-1/2" x 7/16" Bulb
3/4" Well, 3-1/2" x 7/16" Bulb
SKU: F89-0033
White Rodgers
SKU: F89-0033
Brand: White Rodgers
$49.08 each
In Stock
Get 2 by Tue, Jul 21
In Stock
Get 2 by Tue, Jul 21
Compare
Product Image of Immersion Well w/ 1/2" Shank
Immersion Well w/ 1/2" Shank
SKU: F89-0148
White Rodgers
SKU: F89-0148
Brand: White Rodgers
$50.27 each
In Stock
Get 2 by Tue, Jul 21
In Stock
Get 2 by Tue, Jul 21
Compare
Product Image of Solid State Heating Relay, 120 Vac TRIAC, w/ out Transformer
Solid State Heating Relay, 120 Vac TRIAC, w/ out Transformer
SKU: RT850
Honeywell Home
SKU: RT850
Brand: Honeywell Home
(3)
$95.69 each
In Stock
Get 13 by Tue, Jul 21
In Stock
Get 13 by Tue, Jul 21
Compare
Product Image of Fast Response Direct Immersion Control w/ 100-240°F Range and 7-45°F Differential
Fast Response Direct Immersion Control w/ 100-240°F Range and 7-45°F Differential
SKU: 11A79-2
White Rodgers
SKU: 11A79-2
Brand: White Rodgers
(1)
$356.88 each
In Stock
Get 2 by Wed, Jul 22
In Stock
Get 2 by Wed, Jul 22
Compare
Product Image of Limit Control w/ Manual Reset, 125 F Fixed Range and 3" Insertion, L4029E1227
Limit Control w/ Manual Reset, 125 F Fixed Range and 3" Insertion, L4029E1227
SKU: L4029E1227
Resideo
SKU: L4029E1227
Brand: Resideo
$211.63 each
In Stock
Get 5 by Wed, Jul 22
In Stock
Get 5 by Wed, Jul 22
Compare
Product Image of Copper Well Assembly w/ 3-3/4" Insertion
Copper Well Assembly w/ 3-3/4" Insertion
SKU: 112620AA
Resideo
SKU: 112620AA
Brand: Resideo
$153.73 each
In Stock
Get 3 by Tue, Jul 21
In Stock
Get 3 by Tue, Jul 21
Compare
Product Image of Limit Control w/ manual reset, 240 F fixed range and 3" insertion, L4029E1045
Limit Control w/ manual reset, 240 F fixed range and 3" insertion, L4029E1045
SKU: L4029E1045
Resideo
SKU: L4029E1045
Brand: Resideo
(1)
$207.31 each
In Stock
Get 1 by Wed, Jul 22
In Stock
Get 1 by Wed, Jul 22
Compare
Product Image of 1/2" Well Direct Mt to Control
1/2" Well Direct Mt to Control
SKU: F89-0062
White Rodgers
SKU: F89-0062
Brand: White Rodgers
$56.70 each
In Stock
Get 1 by Wed, Jul 22
In Stock
Get 1 by Wed, Jul 22
Compare
Product Image of High Limit, Manual Aquastat Controller w/ 130-Degree(F) to 270-Degree(F) Operating Temp, L4006E1042
High Limit, Manual Aquastat Controller w/ 130-Degree(F) to 270-Degree(F) Operating Temp, L4006E1042
SKU: L4006E1042
Resideo
SKU: L4006E1042
Brand: Resideo
$299.85 each
In Stock
Get 3 by Wed, Jul 22
In Stock
Get 3 by Wed, Jul 22
Compare
Product Image of Outdoor Reset Module for L7224/L7248 Series 2 (Includes Outdoor Sensor), W8735S1000
Outdoor Reset Module for L7224/L7248 Series 2 (Includes Outdoor Sensor), W8735S1000
SKU: W8735S1000
Resideo
SKU: W8735S1000
Brand: Resideo
(3)
$511.06 each
In Stock
Get 2 by Tue, Jul 21
In Stock
Get 2 by Tue, Jul 21
Compare
Product Image of 3/4" Well w/ 1-13/16" Shank
3/4" Well w/ 1-13/16" Shank
SKU: F89-0213
White Rodgers
SKU: F89-0213
Brand: White Rodgers
$39.93 each
In Stock
Get 5 by Wed, Jul 22
In Stock
Get 5 by Wed, Jul 22
Compare
Product Image of 1/2" Well for 1609,1629,2A23
1/2" Well for 1609,1629,2A23
SKU: F89-0027
White Rodgers
SKU: F89-0027
Brand: White Rodgers
$47.30 each
In Stock
Get 1 by Tue, Jul 21
In Stock
Get 1 by Tue, Jul 21
Compare
Product Image of Solid State Relay with 24-347V Built-in Transformer
Solid State Relay with 24-347V Built-in Transformer
SKU: RT850T-347
Honeywell Home
SKU: RT850T-347
Brand: Honeywell Home
$138.01 each
Backorder
Get it by Tue, Aug 18 - Wed, Sep 16
Backorder
Get it by Tue, Aug 18 - Wed, Sep 16
Didn't find what you're looking for? 
Let us know
.
×

Video