Dwyer

Known for industry staples like Magnehelic® differential pressure gauges, digital manometers, airflow measurement tools, and pressure transmitters, Dwyer products make it easier for technicians to verify airflow, track filter performance, and diagnose system issues quickly and accurately.

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Showing 1–48 of 161 resultsSorted by popularity

Rubber Tubing Accessory

Dwyer

SKU: A201
$19.33
MSRP: $22.23
You save 15%
Dwyer A‑201 Rubber Tubing Accessory quantity
Wall Mount Temperature Sensor with PT100 RTD Element

Dwyer

SKU: TE-NND-D
$28.22
MSRP: $32.45
You save 15%
Dwyer TE-NND-D Wall Mount Temperature Sensor PT100 RTD quantity
RHP Series 3% Small Enclosure Humidity Transmitter w/ Analog Output

Dwyer

SKU: RHPX-3SDA0-00
$225.54
MSRP: $259.37
You save 15%
Dwyer RHPX-3SDA0-00 RHP Series 3% Small Enclosure Humidity Transmitter w/ Analog Output quantity
4-20mA Output 2% Accuracy Outdoor Humidity Sensor

Dwyer

SKU: RHPX-2LHAB-00
$323.24
MSRP: $371.73
You save 15%
Dwyer RHPX-2LHAB-00 4-20mA Output 2% Humidity Outdoor Sensor quantity
Submersible Level Transmitter, 5 PSI Range, 40 Ft Cable

Dwyer

SKU: PBLT2-5-40
$1,275.81
MSRP: $1,467.18
You save 15%
Dwyer PBLT2-5-40 Submersible Level Transmitter, 5 PSI, 40 Ft Cable quantity
0-30 PSI Digital Pressure Gauge

Dwyer

SKU: DPG-003
$373.63
MSRP: $429.67
You save 15%
Dwyer DPG-003 0-30 PSI Digital Pressure Gauge quantity
Differential Pressure Transducer, 0–0.25″ w.c. Range

Dwyer

SKU: DM-002
$184.69
MSRP: $212.39
You save 15%
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Differential Pressure Control, 10 In. W.C.

Dwyer

SKU: DHC-009
$637.85
MSRP: $733.53
You save 15%
Dwyer DHC-009 Differential Pressure Control, 10 In. W.C. quantity
Regulated Power Supply, 24VAC Input to 24VDC Output

Dwyer

SKU: BPS-015
$66.58
MSRP: $76.57
You save 15%
Dwyer BPS-015 Regulated Power Supply 24VAC-24VDC quantity
Pressure Transmitter, 0-10″ WC Range

Dwyer

SKU: 616KX-200-108-IN
$123.66
MSRP: $142.21
You save 15%
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Water Leak Detector, Line Powered, DPDT Relay, 11–27 Vac/DC

Dwyer

SKU: WD3-LP-D2-A
$78.56
MSRP: $90.34
You save 15%
Dwyer WD3-LP-D2-A Water Leak Detector, Line Powered, DPDT Relay, 11–27 Vac/DC quantity
Line Powered Leak Detector with Dual-Zone Detection

Dwyer

SKU: WD3-LP-D2-10
$79.68
MSRP: $91.63
You save 15%
Dwyer WD3-LP-D2-10 Line Powered Leak Detector quantity
Mini Flow Switch, Brass Body, Low Flow NPT, SPDT, Explosion Proof

Dwyer

SKU: V6EPB-B-S-LF
$500.16
MSRP: $575.18
You save 15%
Dwyer V6EPB-B-S-LF Mini Flow Switch, Brass Body, Low Flow NPT, SPDT, Explosion Proof quantity
Mini Flow Switch, Brass Body, 2″ NPT, SPDT, Explosion Proof

Dwyer

SKU: V6EPB-B-S-6-0
$357.70
MSRP: $411.36
You save 15%
Dwyer V6EPB-B-S-6-0 Mini Flow Switch, Brass Body, 2" NPT, SPDT, Explosion Proof quantity
Mini Flow Switch, Brass, 1″ NPT, SPDT, Explosion Proof

Dwyer

SKU: V6EPB-B-S-3-B
$440.05
MSRP: $506.06
You save 15%
Dwyer V6EPB-B-S-3-B Mini Flow Switch, Brass, 1" NPT, SPDT, Explosion Proof quantity
Mini Flow Switch, Brass Body, 3/4″ NPT, SPDT, Explosion Proof

Dwyer

SKU: V6EPB-B-S-2-B
$381.80
MSRP: $439.07
You save 15%
Dwyer V6EPB-B-S-2-B Mini Size Flow Switch, Brass, 3/4" NPT, SPDT, Explosion Proof quantity
Mini Flow Switch, Brass, 1-1/4″ NPT, DPDT, Explosion Proof

Dwyer

SKU: V6EPB-B-D-4-B
$558.81
MSRP: $642.63
You save 15%
Dwyer V6EPB-B-D-4-B Mini Size Flow Switch, Brass, 1-1/4" NPT, DPDT, Explosion Proof quantity
Weatherproof Dual Stage Digital Temperature Switch, 90-255 Vac

Dwyer

SKU: TSW-250
$168.00
MSRP: $193.20
You save 15%
Dwyer TSW-250 Weatherproof Dual Stage Digital Temperature Switch, 90-255 Vac quantity
Weatherproof Digital Temperature Switch, Single Stage, 12-24 Vac/Vdc

Dwyer

SKU: TSW-160
$137.08
MSRP: $157.64
You save 15%
Dwyer TSW-160 Weatherproof Digital Temperature Switch, Single Stage, 12-24 Vac/Vdc quantity
Dual Stage Temperature Switch, 115 VAC, 2 Relays, Red Display

Dwyer

SKU: TSS2-2100
$119.78
MSRP: $137.75
You save 15%
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Thermocouple Limit Control, Type J/K/S Input, 110 VAC, SPDT Relay

Dwyer

SKU: TSF-4010
$155.11
MSRP: $178.38
You save 15%
Dwyer TSF-4010 Thermocouple Limit Control, Type J/K/S Input, 110 VAC, SPDT quantity
Digital Temperature Switch, 110 VAC, SPDT Relay Output

Dwyer

SKU: TS2-010
$85.14
MSRP: $97.91
You save 15%
Dwyer TS2-010 Digital Temperature Switch, 110 VAC, SPDT Relay Output quantity
PTC Sensor, Stainless Steel Sheath, PVC Cable, 10′ Length

Dwyer

SKU: TS-21
$39.58
MSRP: $45.52
You save 15%
Dwyer TS-21 PTC Sensor, Stainless Steel Sheath, PVC Cable, 10' Length quantity
Digital Temperature Switch, 110 VAC, 16 Amp, Celsius, LED Display

Dwyer

SKU: TS-13011
$173.63
MSRP: $199.67
You save 15%
Dwyer TS-13011 Digital Temperature Switch, 110 VAC, 16 Amp, Celsius, LED Display quantity
Digital Temperature Switch, 110 VAC, 16 Amp, LED Display

Dwyer

SKU: TS-13010
$173.63
MSRP: $199.67
You save 15%
Dwyer TS-13010 Digital Temperature Switch, 110 VAC, 16 Amp, LED Display quantity
Tridicator Gage, 0–200 PSI Range, 1/2″ NPT Center Back Mount

Dwyer

SKU: TRI-200-50
$102.48
MSRP: $117.85
You save 15%
Dwyer TRI-200-50 Tridicator Gage, 0–200 PSI, 1/2" NPT Center Back Mount quantity
Tridicator Gage, 0–100 PSI Range, 1/4″ NPT Center Back Mount

Dwyer

SKU: TRI-100-25E
$119.55
MSRP: $137.48
You save 15%
Dwyer TRI-100-25E Tridicator Gage, 0–100 PSI, 1/4" NPT Center Back Mount quantity
Temperature/Process Indicator, PTC Thermistor Input, 110 VAC

Dwyer

SKU: TID-1110
$80.50
MSRP: $92.58
You save 15%
Dwyer TID-1110 Temperature/Process Indicator, PTC Thermistor Input, 110 VAC quantity
Thermal Flow Switch for Reliable Fluid Flow Detection

Dwyer

SKU: TDFS2-2-P-06
$667.09
MSRP: $767.15
You save 15%
Dwyer TDFS2-2-P-06 Thermal Flow Switch quantity
Thermocouple Temp Switch, Type J/K/S Input, 110V, SPDT Relay

Dwyer

SKU: TCS-4010
$121.21
MSRP: $139.39
You save 15%
Dwyer TCS-4010 Thermocouple Temperature Switch, Type J/K/S, 110V, SPDT quantity
3% Accuracy Wall Mount Humidity & Temperature Sensor

Dwyer

SKU: RHP-3N4B
$162.48
MSRP: $186.85
You save 15%
Dwyer RHP-3N4B 3% Accuracy Wall Mount Humidity & Temperature Sensor quantity
Humidity & Temperature Transmitter, 2% Accuracy

Dwyer

SKU: RHP-2N44
$184.28
MSRP: $211.92
You save 15%
Dwyer RHP-2N44 Humidity & Temperature Transmitter, 2% Accuracy quantity
Averaging Flow Sensor, 7-21/32″ Insertion, 1/4″ ID, 3/8″ OD

Dwyer

SKU: PAFS-1004
$21.79
MSRP: $25.06
You save 15%
Dwyer PAFS-1004 Averaging Flow Sensor, 7-21/32" Insertion, 1/4" ID, 3/8" OD quantity
Averaging Flow Sensor, 5-13/32″ Insertion, Air & Compatible Gases

Dwyer

SKU: PAFS-1003
$13.60
MSRP: $15.64
You save 15%
Dwyer PAFS-1003 Averaging Flow Sensor, 5-13/32" Insertion, 1/4" ID Tubing quantity
Averaging Flow Sensor, 3-5/32″ Insertion, Air & Compatible Gases

Dwyer

SKU: PAFS-1002
$14.73
MSRP: $16.94
You save 15%
Dwyer PAFS-1002 Averaging Flow Sensor, 3-5/32" Insertion, 1/4" ID, 3/8" OD quantity
±0.1/0.25/0.5 In. W.C. Differential Pressure Transmitter, 4-20mA, LCD

Dwyer

SKU: MSX-W20-IN-LCD
$203.53
MSRP: $234.06
You save 15%
Dwyer MSX-W20-IN-LCD ±0.1/0.25/0.5 In. W.C. Differential Pressure Transmitter, 4-20mA, LCD quantity
Wall Transmitter, 10/15/25/28″ WC Ranges, LCD Display

Dwyer

SKU: MSX-W13-IN-LCD
$203.53
MSRP: $234.06
You save 15%
Dwyer MSX-W13-IN-LCD Wall Transmitter 10, 15, 25, 28" WC | SKU: MSX-W13-IN-LCD quantity
MagnesenseDiff Pressure Transmitter, Wall Mount

Dwyer

SKU: MSX-W12-IN
$140.36
MSRP: $161.41
You save 15%
Dwyer MSX-W12-IN MagnesenseDiff Pressure Transmitter | SKU: MSX-W12-IN quantity
4-20mA Differential Pressure Transmitter with LCD Display

Dwyer

SKU: MSX-W10-IN-LCD
$203.53
MSRP: $234.06
You save 15%
Read more
Low Pressure Gage, 0–15″ W.C., 2-1/2″ Face, 1/4″ Male NPT

Dwyer

SKU: LPG4-D8122N
$100.58
MSRP: $115.67
You save 15%
Dwyer LPG4-D8122N Low Pressure Gage, 0–15" W.C., 2-1/2" Face, 1/4" NPT quantity
Low Pressure Gage, 0-15″ W.C., 2-1/2″ Face, 1/4″ NPT

Dwyer

SKU: LPG3-D8122N
$122.68
MSRP: $141.08
You save 15%
Dwyer LPG3-D8122N Low Pressure Gage, 0-15" W.C., 2-1/2" Face, 1/4" NPT quantity
Polycarbonate Flowmeter, 2–20 GPM Water, 1″ Male NPT, SS Float

Dwyer

SKU: LFME-13-F2
$234.99
MSRP: $270.24
You save 15%
Dwyer LFME-13-F2 Polycarbonate Flowmeter, 2–20 GPM Water, 1" Male NPT, SS Float quantity
Float Switch for Liquid Level Detection & Control

Dwyer

SKU: L8-WP2
$225.11
MSRP: $258.88
You save 15%
Dwyer L8-WP2 Float Switch quantity
Liquid Level Switch, Brass, SPDT, 1″ Side Wall Mount, Explosion Proof

Dwyer

SKU: L6EPB-B-S-3-A
$466.74
MSRP: $536.75
You save 15%
Dwyer L6EPB-B-S-3-A Liquid Level Switch, Brass, SPDT, 1" Side Wall Mount quantity
Liquid Level Switch, Brass, SPDT, 1″ Line Size, Horizontal Mount

Dwyer

SKU: L6EPB-B-S-3-0
$404.03
MSRP: $464.63
You save 15%
Dwyer L6EPB-B-S-3-0 Liquid Level Switch, Brass, SPDT, 1" Horizontal Mount quantity
Liquid Level Switch, Brass, SPDT, 1″ Line, Explosion Proof, Horizontal

Dwyer

SKU: L6-EPB-B-S-3-H
$542.93
MSRP: $624.37
You save 15%
Dwyer L6-EPB-B-S-3-H Liquid Level Switch, Brass, SPDT, 1" Line, Explosion Proof quantity
Float Switch, Brass Body, 316 SS Float, Side Wall Mount, SPDT

Dwyer

SKU: L4
$857.83
MSRP: $986.50
You save 15%
Dwyer L4 Float Switch, Brass/316 SS, Side Wall Mount, Weatherproof & Explosion Proof, SPDT quantity
Current to Pressure Transducer, 4-20 mA Input, 3-15 PSI Output

Dwyer

SKU: IP-42
$785.54
MSRP: $903.37
You save 15%
Dwyer IP-42 Current to Pressure Transducer, 4-20 mA Input, 3-15 PSI Output quantity

More About Dwyer at Jackson Systems & Supply

Dwyer instruments support the day-to-day work of HVAC contractors by providing dependable pressure, airflow, and environmental measurements that keep equipment operating efficiently. From differential pressure gauges used to monitor filters and duct systems to handheld testing tools that help verify system performance, these instruments deliver the accuracy technicians rely on in the field.

Why Choose Dwyer?

Precision Pressure Monitoring

Differential pressure gauges and transmitters provide highly accurate readings for airflow verification, filter monitoring, and duct pressure diagnostics.

Built for HVAC Applications

Many Dwyer instruments are specifically designed for ventilation, filtration, and air balancing tasks commonly performed by HVAC technicians.

Reliable, Field-Ready Instruments

Durable construction and simple, easy-to-read displays make Dwyer tools dependable for everyday service work and long-term system monitoring.