Wells / Immersion Wells / Thermowells

Wells and Thermowells protect temperature sensors in hydronic systems from harsh conditions while ensuring accurate readings. These protective tubes extend sensor life and allow safe maintenance without system shutdown. Jackson Systems stocks Wells in multiple lengths and thread sizes – find the exact fit for your hydronic application today.

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Showing 145–184 of 184 resultsSorted by popularity

Sensor Well R3/4″ x 100mm Thermowell for HVAC Systems

Bosch HVAC

SKU: 5446065
$83.23
MSRP: $95.71
You save 15%
Bosch 5446065 Sensor Well R3/4" x 100mm Thermowell quantity
SPST Immersion Aquastat, 180–240°F Temperature Range

Burnham Boiler

SKU: 80160474
$141.20
MSRP: $162.38
You save 15%
Burnham Boiler 80160474 SPST Immersion Aquastat, 180–240°F quantity
10K Immersion Temperature Sensor with 4″ Probe

BAPI

SKU: BA/10K-2-I-4-BB2
$21.99
MSRP: $25.29
You save 13%
BAPI BA/10K-2-I-4-BB2 10K Immersion Temperature Sensor with 4" Probe quantity
10K Immersion Temperature Sensor with 4″ Probe

BAPI

SKU: BA/10K-2-I-4
$20.99
MSRP: $24.14
You save 13%
BAPI BA/10K-2-I-4 10K Immersion Temperature Sensor with 4" Probe quantity
10K Immersion Temperature Sensor with 2″ Probe

BAPI

SKU: BA/10K-2-I-2-BB2
$22.35
MSRP: $25.70
You save 15%
BAPI BA/10K-2-I-2-BB2 10K Immersion Temperature Sensor, 2" Probe quantity
10K Immersion Temperature Sensor with 2″ Probe

BAPI

SKU: BA/10K-2-I-2
$24.72
MSRP: $28.43
You save 15%
BAPI BA/10K-2-I-2 10K Immersion Temperature Sensor with 2" Probe quantity
T-Piece with Thermowell, 1-1/2″ Pipe Size

Belimo

SKU: A-22PE-A13
$63.77
MSRP: $73.34
You save 15%
Belimo A-22PE-A13 T-Piece with Thermowell 1-1/2" quantity
Stainless Steel Thermowell, 6″ Insertion Length, 1/2″ NPT

Belimo

SKU: A-22P-A09
$25.07
MSRP: $28.83
You save 13%
Belimo A-22P-A09 Stainless Steel Thermowell 6" Insertion 1/2" NPT quantity
Thermowell Stainless Steel 1/2″ NPT 100MM

Belimo

SKU: A-22P-A07
$21.11
MSRP: $24.28
You save 15%
Belimo A-22P-A07 Thermowell Stainless Steel 1/2" NPT 100MM quantity
Passive NTC10k3 Temperature Sensor, 8″ Immersion

Belimo

SKU: 01DT-5MP
$21.37
MSRP: $24.58
You save 13%
Belimo 01DT-5MP Passive NTC10k3 Temperature Sensor 8" Immersion quantity
Passive NTC10k Temperature Sensor, 4″ Immersion

Belimo

SKU: 01DT-5LL
$21.90
MSRP: $25.19
You save 13%
Belimo 01DT-5LL Passive NTC10k Temperature Sensor 4" Immersion quantity
Temperature Sensor, 4″ Immersion

Schneider Electric

SKU: ETI800-4
$24.53
MSRP: $28.21
You save 15%
Schneider Electric (Barber Colman) ETI800-4 Temperature Sensor, 4" Immersion quantity
Temperature Sensor, 4″ Immersion, 10K Ohm

Schneider Electric

SKU: ETI500-4
$22.50
MSRP: $25.88
You save 13%
Schneider Electric (Barber Colman) ETI500-4 Temperature Sensor, 4" Immersion, 10K Ohm quantity
18″ Solid SS Liquid Level Electrode Probe, 1/4″ Dia, 1/4-20 Thread

Auburn

SKU: E5-1420-18
$27.75
MSRP: $31.91
You save 13%
Auburn E5-1420-18 18" Solid Stainless Steel Liquid Level Electrode Probe quantity
Immersion temp sensor with 4″ galvanized well & 1/2″ NPT threads

ACI

SKU: A/AN-I-4-GD
$50.93
MSRP: $58.57
You save 15%
ACI A/AN-I-4-GD Immersion Temperature Sensor, 4" Galvanized Well, 1/2" NPT quantity
10kOhm thermistor sensor with 4″ immersion well and enclosure

ACI

SKU: 123394
$53.03
MSRP: $60.98
You save 15%
ACI 123394 10kOhm Thermistor Well Sensor 4" Enclosure quantity
10kOhm thermistor with 2.5″ well mount and enclosure

ACI

SKU: 123389
$53.03
MSRP: $60.98
You save 15%
ACI 123389 10kOhm Thermistor Well Sensor 2.5" Enclosure quantity
10kOhm thermistor well-mount sensor with 2.5″ enclosure

ACI

SKU: 122063
$50.40
MSRP: $57.96
You save 15%
ACI 122063 10kOhm Thermistor Well Sensor with 2.5" Enclosure quantity
10kOhm thermistor well-mount temperature sensor, 4″ insertion

ACI

SKU: 121469
$65.87
MSRP: $75.75
You save 15%
ACI 121469 10kOhm Thermistor Well Sensor 4" with Enclosure quantity
20kOhm encapsulated thermistor well sensor with 4″ insertion depth

ACI

SKU: 119657
$50.40
MSRP: $57.96
You save 15%
ACI 119657 20kOhm Thermistor Well Sensor 4" Encapsulated quantity
1kOhm 2-wire well-mount temperature sensor with 4″ enclosure

ACI

SKU: 119541
$53.53
MSRP: $71.56
You save 25%
ACI 119541 1kOhm 2-Wire Well Temperature Sensor with 4" Enclosure quantity
Temperature Sensor Well, 1/2″ NPT, 1-13/16″ Shank Length

Copeland

SKU: F89-0211
$44.49
MSRP: $51.16
You save 15%
Copeland F89-0211 Temperature Sensor Well, 1/2" NPT, 1-13/16" Shank Length quantity
1/2″ NPT Immersion Well for Temperature Controls

Copeland

SKU: F89-0148
$42.42
MSRP: $48.78
You save 15%
Copeland F89-0148 1/2" NPT Immersion Well for Temperature Controls quantity
Immersion Well — 1/2″ NPT, 3-1/2″ x 7/16″ Bulb

Copeland

SKU: F89-0036
$45.58
MSRP: $52.42
You save 15%
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Immersion Well, 3/4″ NPT, 1-13/16″ Shank

Copeland

SKU: F89-0213
$47.75
MSRP: $54.91
You save 15%
Copeland White-Rodgers F89-0213 Immersion Well, 3/4" NPT, 1-13/16" Shank quantity
Immersion Well, 3/4″ NPT, for 3-1/2″ x 7/16″ Bulb

Copeland

SKU: F89-0033
$47.75
MSRP: $54.91
You save 15%
Copeland White-Rodgers F89-0033 Immersion Well, 3/4" NPT, for 3-1/2" x 7/16" Bulb quantity
Immersion Well, 1/2″ NPT, for 1609 / 1629 / 2A23 Controls

Copeland

SKU: F89-0027
$40.83
MSRP: $46.95
You save 15%
Copeland White-Rodgers F89-0027 Immersion Well, 1/2" NPT, for 1609 / 1629 / 2A23 Controls quantity
Thermowell Assembly, 3/4″ NPT x 4-1/2″ Insertion Length

United Electric

SKU: SD6225-76
$204.68
MSRP: $235.38
You save 15%
Read more
Brass Thermowell – 1/2″ NPT, 4″ Insertion

United Electric

SKU: SD6225-75
$118.85
MSRP: $136.68
You save 15%
United Electric SD6225-75 Brass Thermowell – 1/2" NPT, 4" Insertion quantity
1/2″ NPT Standard Electro-Well with Nut for Low Water Cut-Off Activation

Hydrolevel

SKU: EW221
$34.98
MSRP: $40.23
You save 15%
Hydrolevel EW221 1/2" NPT Standard Electro-Well with Nut for Low Water Cut-Off Activation quantity
3/4″ NPT Extended Electro-Well with Long Nut for Tankless Coil Burners

Hydrolevel

SKU: EW202
$42.78
MSRP: $49.20
You save 13%
Hydrolevel EW202 3/4" NPT Extended Electro-Well with Long Nut for Tankless Coil Burners quantity
3/4″ NPT Standard Electro-Well with Nut for Low Water Cut-Off Activation

Hydrolevel

SKU: EW201
$34.98
MSRP: $40.23
You save 15%
Hydrolevel EW201 3/4" NPT Standard Electro-Well with Nut for Low Water Cut-Off Activation quantity
3/4″ NPT Threaded Thermowell, 2-1/2″ Insertion Length

Ashcroft

SKU: 75W0250ST260C
$66.71
MSRP: $76.72
You save 15%
Ashcroft 75W0250ST260C 3/4" NPT Threaded Thermowell, 2-1/2" Insertion Length quantity
Well

Trane

SKU: WEL0848
$39.58
MSRP: $45.52
You save 15%
Trane WEL0848 Well quantity
Honeywell 50001774-001 Stainless Steel Immersion Well

Honeywell Home

SKU: 50001774-001
$39.90
MSRP: $45.89
You save 15%
Read more
Copper Well Assembly

Resideo

SKU: 123870A/B
$28.80
MSRP: $33.12
You save 15%
Read more
Honeywell 112630AA Copper Well Assembly

Honeywell Home

SKU: 112630AA
$101.11
MSRP: $116.28
You save 15%
Read more
Honeywell 123872A/B Copper Well Assembly

Honeywell Home

SKU: 123872A/B
$33.99
MSRP: $42.03
You save 19%
Read more
Honeywell 123872A Copper Well Assembly

Resideo

SKU: 123872A
$70.03
MSRP: $80.53
You save 15%
Honeywell 123872A Copper Well Assembly quantity
Honeywell 121371M Copper Well Assembly

Resideo

SKU: 121371M
$51.61
MSRP: $59.35
You save 13%
Honeywell 121371M Copper Well Assembly quantity

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