Aqua-Hot electrical parts featuring factory components including wiring, connectors, and other OEM parts for heating systems.

Aqua-Hot Electrical Parts | Wiring Harnesses, Relays & Controllers

OEM Electrical Parts for Aqua-Hot Heating Systems

Keep your Aqua-Hot or Hydro-Hot hydronic heating system running reliably with genuine OEM electrical components. This collection includes everything from wiring harnesses and relays to sensors, thermostats, and control boards — all designed to meet Aqua-Hot factory specifications.

Using authentic electrical parts ensures safe operation, accurate diagnostics, and long-term performance for your RV heating system. Whether you’re troubleshooting a control fault or replacing an aging harness, our components deliver the quality and compatibility you expect.

✅ OEM Aqua-Hot electrical parts for all major heater models
⚙️ Includes wiring harnesses, control boards, thermostats, and relays
🔌 Ensures proper voltage, signal, and system communication
🚐 Perfect for RVs, coaches, and hydronic heating repairs
🧰 Tested to meet Aqua-Hot factory performance standards

Browse by model or use filters to find compatible parts for your system. Each product page includes part numbers, wiring details, and compatibility notes to make identifying replacements simple and accurate.

Electric heat element with 120 VAC voltage and 1650 watt power rating in metal casing
Save $16.89
$49.43
$32.54

Electric Heat Element 120 VAC / 1650 Watt ELX-2E7-540

$49.43
$32.54
Save $16.89
Electronic 12 VDC control board with multiple connectors and a compact design.
Save $17.05
$568.17
$551.12

Electronic 12 VDC Control Board ELE-PC4-010-AA

$568.17
$551.12
Save $17.05
Electric heating element with a 2000 watt capacity and 120 VAC compatibility.
Save $1.44
$47.93
$46.49

120 VAC/2000 Watt Electric Heating Element ELX-G12-07L

$47.93
$46.49
Save $1.44
Electromechanical 30 Amp relay with a compact design and multiple connection terminals.
Save $5.83
$77.61
$71.78

Electromechanical 30 Amp Relay ELX-630-001

$77.61
$71.78
Save $5.83
Propane AH Flame Sensor ELX-375-015 with metal probe and plastic connector housing
$46.67

Propane AH Flame Sensor ELX-375-015

$46.67
Buck Boost Card Replacement Kit with fan side components and connectors.
$158.63

Buck Boost Card Replacement Kit Fan Side ELE-400-021

$158.63
Flame ignitor designed for Aqua-Hot LP gas models ELX-375-030 with metal and ceramic parts
Sold out
$60.02

Flame Ignitor for Aqua-Hot LP Gas Models ELX-375-030

$60.02
Sold out
Cozy III Heat Exchanger with dual 12V DC fans and compact dimensions of 13.125x6.5x3.625 inches.
Save $4.02
$133.98
$129.96

Cozy III Heat Exchanger - EXE-103-0EX

BTU's: 8,200 | CFM: 68 | Amps: 0.5 Width: 13.125 | Height: 3.625 | Depth: 6.5 | Barb Size: 0.75 | Fan(s): Two-12V DC Radial" Item Attributes ...

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$133.98
$129.96
Save $4.02
$447.28

Aqua-Hot Retrofit Heater Reporter Harness Kit

$447.28
Replacement ignitor kit for Buck Boost with side mounting, model ELE-400-022.
$113.37

Kit, Buck Boost Replacement Ignitor Side, FRU ELE-400-022

$113.37
12VDC 30 AMP relay with a compact design and multiple connection terminals.
$28.92

12VDC / 30 AMP Relay ELX-228-1A1

$28.92
A Burner Controller Card ELX-375-025 with various electronic components and connectors.
$246.45

Burner Controller Card for Aqua-Hot – ELX-375-025

OEM burner controller card (PCB) for Aqua-Hot RV hydronic heating systems. This board manages burner ignition sequencing, flame supervision, and sa...

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$246.45
Fluid level conductive switch with a compact rectangular design and two wire connectors.
$145.87

Fluid Level Conductive Switch ELE-800-006-FRU

$145.87
Three position switch assembly with black lever and mounting base visible.
Save $3.03
$101.07
$98.04

3 Position Switch Assembly ELE-000-509

$101.07
$98.04
Save $3.03
Electromechanical retrofit kit with relay components for electrical systems.
$139.92

Relay, Electromechanical Retrofit Kit AH

$139.92
$7.99

Thermistor, WHT, 10K NTC, Room Temp. Sensor - ELX-THM-309

$7.99
Aqua-Hot Retrofilt Reporter 2.0 with a sleek design and clear display for monitoring.
Save $15.13
$504.38
$489.25

Aqua-Hot Retrofilt Reporter 2.0

The Retrofilt Reporter 2.0 is a complete 12VDC touchscreen controller system designed for hydronic heating applications. This kit serves as a direc...

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$504.38
$489.25
Save $15.13
A compact 12 VDC heat exchanger designed for quiet operation.
Sold out
$169.38

Heat Exchanger, Whisper Silent, 12 VDC

$169.38
Sold out
8 pole terminal electronic controller plug with multiple connection pins and black housing
$7.97

8 Pole Terminal Electronic Controller Plug ELX-312-499

$7.97
Interlock Switch ELX-000-051 with a compact design and multiple connection points.
$21.99

Interlock Switch ELX-000-051

$21.99
Aqua-Hot 200 Relay Control Board | ELE-RCB-200
$248.07

Aqua-Hot 200 Relay Control Board | ELE-RCB-200

$248.07
$109.99

125G Harness Coach Side - ELE-125-200

$109.99
$65.12

Buck Boost Replacement Kit

$65.12
Low Temp Cut-Off Thermostat ELE-LTC-606 with compact rectangular design and connection terminals.
$35.53

Low Temp Cut-Off Thermostat ELE-LTC-606

$35.53
Three-position terminal block with screw terminals for secure wire connections.
$15.10

3 Position Terminal Block ELE-000-905

$15.10
12V Aqua Hot Silent Cozy Fan with 25mm blade diameter, model ELX-SFA-12V.
$30.73

Aqua-Hot Silent Cozy Fan, 12V 25mm – ELX-SFA-12V

OEM Aqua-Hot Silent Cozy Fan (12V, 25mm) for RV hydronic heat exchangers. This quiet-operation fan circulates warm air from your Aqua-Hot heat exch...

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$30.73
Brass fluid level switch with connectors, model ELE-800-002, cylindrical shape.
Save $27.81
$477.80
$449.99

Brass Fluid Level Switch w/ Connectors ELE-800-002

$477.80
$449.99
Save $27.81
3-terminal old style rocker switch with green light indicator for older Aqua-Hot models
$16.95

3 Terminal Old Style Lighted Rocker Switch

For use on older aqua-hot models and has green lighted indicator window

$16.95
Automotive 40A SPDT relay with harness and mount for controlling pumps and fans
$23.22

Automotive Relay 40A SPDT ELX-375-040

Relay, Automotive 40A SPDT with Harness & Mount Used for controlling up to 40A pumps, fans & zones Used for reversing zone polarity for n...

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$23.22
Back pressure switch with a pressure rating of 376 WC and model ELX-375-035.
Save $2.70
$90.14
$87.44

Back Pressure Switch, 376 WC ELX-375-035

$90.14
$87.44
Save $2.70
A pressure switch with a .15 WC rating, featuring a compact design and electrical connections.
Save $2.70
$89.97
$87.27

Fan Validation Pressure Switch .15 WC ELX-375-010

The ELX-375-010 is a fan validation pressure switch rated at 0.15" WC that monitors combustion fan operation in hydronic heating systems. This safe...

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$89.97
$87.27
Save $2.70
Black 12V LED rocker switch with a 44x22 mm cutout and four terminals.
Save $0.58
$19.23
$18.65

4 Terminal 12V LED Rocker Switch 44X22 mm Cutout ELX-283-283

$19.23
$18.65
Save $0.58
120V 1500 watt electric heating element with metal coil and ceramic base visible
$649.99

120V/1500 Watt Electric Heating Element

$649.99
Aqua-Hot 12-foot B-plug electrical harness with black connectors and wiring.
$83.85

Aqua-Hot 12ft B-Plug Harness

$83.85
Electromechanical relay retrofit kit with mounting hardware and wiring components visible.
$94.30

Electromechanical Relay Retrofit Kit

$94.30
$51.92

Aqua-Hot Reporter Pin Kit ELE-500-105

$51.92

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