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Brass pipe adapter with 1/4 inch FNPT and 1/8 inch MNPT connections for various fluids.
$5.99

Brass Pipe Adapter 1/4 inch FNPT x 1/8 inch MNPT (fuel, water, air, oil, gas)

Brass pipe adapter with 1/4-inch female NPT to 1/8-inch male NPT threads. Versatile fitting suitable for fuel, water, air, oil, and gas connections...

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$5.99
Brass hex nipple pipe fitting with 1/2 inch male NPT threads on both ends
$15.00

Brass Pipe Fitting, Hex Nipple, 1/2" x 1/2" NPT Male Pipe

Premium 1/2 inch Close Nipple Brass Pipe Fitting with NPT male threads, engineered for secure and leak-free connections. Perfect for air, water, ga...

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$15.00
$60.92

Brush (Set) March, 809 High Speed

Replacement brush set for March 809 high-speed circulation pumps used in Aqua-Hot and Hydro-Hot hydronic heating systems. Motor brushes wear over t...

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$60.92
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
$65.12

Buck Boost Replacement Kit

$65.12
Buehler C20 pump retrofit kit for aqua-hot and hydro-hot circulation and pre-heat systems
$219.99

Buehler C20 Pump Retro Fit Kit 400/450 - PLE-100-905-FRU

These new style pumps are used on all new aqua-hot and hydro-hot systems. This can be used as a circulation pump, stir pump & engine pre-hea...

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$219.99
Metal pump bracket with mounting holes, designed for Buehler C21 model.
Save $0.12
$3.89
$3.77

Buehler C21 Pump Bracket PLX-100-836

Pump mounting bracket (PLX-100-836) for the Buehler C21 circulation pump used in Aqua-Hot hydronic heating systems. Secures the pump in the correct...

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$3.89
$3.77
Save $0.12
Buehler C21 Pump PLX-100-900 with a compact design and control panel for fluid transfer.
$152.90

Buehler C21 Pump PLX-100-900

Buehler C21 circulation pump (PLX-100-900) for Aqua-Hot hydronic heating systems. This pump circulates heated coolant through the system's zones, c...

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$152.90
Buehler pump assembly with harness featuring a compact design and durable materials.
$166.82

Buehler Pump Assembly with Harness - PLE-100-901

$166.82
Clear, flexible Tygothane polyurethane tubing, 5/16 inch diameter, 7/16 inch outer diameter.
$6.76

BULK Tygothane®, Unbraided Polyurethane Tubing 100ft, 5/16 inch D, 7/16 inch OD (SOLD BY FOOT)

Tygothane® unbraided polyurethane tubing, 5/16-inch ID x 7/16-inch OD, sold by the foot from a 100-foot spool. Used in Aqua-Hot and Hydro-Hot syste...

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$6.76
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
Plastic threaded plug for pipe fittings, size 1/4 NPT, made of PE-HD material.
$0.45

Caplugs 99390174 Plastic Threaded Plug for Pipe Fittings. P-28, PE-HD, to Plug Thread Size 1/4 NPT",

Plastic threaded plug (P-28) for 1/4-inch NPT pipe fittings. Used to cap off unused ports in Aqua-Hot and Hydro-Hot hydronic heating systems during...

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$0.45
Plastic threaded pipe plug Caplugs P-48 in black, fits 1/2 inch NPT thread size.
$1.25

Caplugs 99390176 Plastic Threaded Plug for Pipe Fittings. P-48, PE-HD, to Plug Thread Size 1/2 NPT",

Plastic threaded plug (P-48) for 1/2-inch NPT pipe fittings. Used to cap off unused ports in Aqua-Hot and Hydro-Hot hydronic heating systems during...

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$1.25
Clear 5/8 inch diameter tube hose, measuring 4 feet in length, for overflow applications.
$15.28

Clear Tube Overflow Hose 5/8 inch x 4 foot

Clear 5/8-inch overflow hose, 4-foot length, for Aqua-Hot and Hydro-Hot hydronic heating systems. Routes excess coolant from the expansion tank ove...

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$15.28
Clear flexible tubing, 5/8 inch diameter, 6 feet long, suitable for various applications.
$20.26

Clear Tubing 5/8 inch x 6 foot

Clear 5/8-inch tubing, 6-foot length, for Aqua-Hot and Hydro-Hot hydronic heating systems. Used for overflow lines, coolant routing, and sight line...

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$20.26
Combustion chamber tube gasket designed for specific engine models and low emissions versions.
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$9.53

Combustion Chamber Tube Gasket HDE-700-205

Combustion chamber tube gasket for Models 375, 400 and 525 and low emissions models AHE-450 AND 600D

$9.53
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Half-inch crimp ring made of durable metal with a smooth, shiny finish.
$0.68

CONS 1/2 in Crimp Ring

The CONS 1/2 in Crimp Ring is designed for secure and reliable PEX pipe connections. Built for durability, it ensures a tight, long-lasting seal in...

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$0.68
CONS Nylatch Plunger model HDX-100-200 with black plastic body and metal pin.
$1.38

CONS Nylatch Plunger - HDX-100-200

Nylatch plunger (HDX-100-200) for Aqua-Hot heating systems. This latch component secures access panels and service covers on Aqua-Hot cabin heaters...

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$1.38
Constant tension hose clamp with a 1/2 inch diameter and metal construction
$1.00

Constant Tension Hose Clamp 1/2 inch CTB-12

1/2-inch constant tension hose clamp (CTB-12) for Aqua-Hot and Hydro-Hot hydronic heating systems. Unlike standard worm gear clamps, constant tensi...

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$1.00
Metal constant tension hose clamp designed for 5/8-inch hoses.
$1.31

Constant Tension Hose Clamp for 5/8" Hose plx-ctb-15

The Constant Tension Hose Clamp for 5/8" Hose (PLX-CTB-15) provides reliable, self-adjusting tension for leak-free sealing in changing temperature ...

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$1.31
Metal constant tension hose clamp with a 7/8 inch diameter and adjustable design.
$4.85

Constant Tension Hose Clamp, 7/8 inch CTB-24ST

7/8-inch constant tension hose clamp (CTB-24ST) for Aqua-Hot and Hydro-Hot hydronic heating systems. Self-adjusting spring design maintains consist...

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$4.85
$24.06

Control Panel Cable - 9m

$24.06
Black Cooper pump harness with adjustable straps and a sturdy metal buckle.
$13.65

Cooper Pump Harness

$13.65
Metal conversion bracket for Cooper to GRI Zone pump, model SME-850-850.
$24.30

Cooper to GRI Zone Pump Conversion Bracket SME-850-850

The Cooper to GRI Zone Pump Conversion Bracket SME-850-850 provides a secure and precise mounting solution when upgrading or converting zone pumps....

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$24.30
Black plastic grille measuring 3.5 by 15 inches with a simple rectangular design
$21.62

Cozy Grille 3.5 inches x 15 inches Black Plastic

Black plastic cozy grille (3.5" x 15") for Aqua-Hot hydronic heating systems. Mounts over the cozy plenum heat exchanger outlet to distribute warm ...

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$21.62
Black plastic Cozy Grille measuring 3.5 by 21.5 inches with a slatted design
$23.68

Cozy Grille 3.5 inches x 21.5 inches black plastic

Black plastic cozy grille (3.5" x 21.5") for Aqua-Hot hydronic heating systems. This larger grille covers wider cozy plenum installations and distr...

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$23.68
A rectangular grille measuring 3.5 inches by 8.5 inches in a cozy design.
$17.50

Cozy Grille 3.5 inches x 8.5 inches

Black plastic cozy grille (3.5" x 8.5") for Aqua-Hot hydronic heating systems. This compact grille is designed for smaller zone heating locations s...

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$17.50
Tan metal grille measuring 10 inches by 2 inches with a sleek design.
$4.79

Cozy Grille, 10 in. x 2 in TAN, METAL EXX-950-411

Tan metal cozy grille (10" x 2") (EXX-950-411) for Aqua-Hot hydronic heating systems. This low-profile metal grille is designed for flush-mount ins...

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$4.79
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
Cozy plenum assembly with insulated panels and metal frame for HVAC systems
$254.58

Cozy Plenum Assembly

Cozy plenum assembly for Aqua-Hot hydronic heating systems. The cozy plenum is a compact heat exchanger with integrated fan that mounts in cabinets...

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$254.58
$2,899.99

DBW 2010 12V BASIC HEATER

Webasto DBW-2010 12-volt basic diesel heater unit. A complete burner assembly designed for RV hydronic heating systems including Aqua-Hot and Hydro...

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$2,899.99
A Diesel Photo-Eye Kit 250D with various photography accessories in a compact case.
$114.66

Diesel Photo-Eye Kit 250D

Diesel photo-eye kit for the Aqua-Hot 250D hydronic heating system. The photo-eye (cad cell) detects the presence of a flame in the combustion cham...

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$114.66
Elbow swivel fitting with a 1/2 inch barb and 1/2 inch NPT connection.
$17.77

Elbow Swivel Fitting, 1/2 in. Barb x 1/2 in. NPT - PLX-000-755

The PLX-000-755 Elbow Swivel Fitting is engineered for reliable, leak-free performance in demanding plumbing and fluid transfer applications. Featu...

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$17.77
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
Electrode clamp assembly with durable metal construction and secure gripping mechanism.
$9.99

Electrode Clamp Assembly MTRV-279-560-971

Electrode clamp assembly (MTRV-279-560-971) for Webasto DBW-2010 burners used in Aqua-Hot, Hydro-Hot, and other hydronic heating systems. This kit ...

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$9.99
A metal electrode clamp bolt with a sturdy design for secure attachment.
$0.69

Electrode Clamp Bolt WPX-267-279

Electrode clamp bolt (WPX-267-279) for Webasto DBW-2010 diesel burners. Secures the electrode ignition clamp that holds the ignition electrode in p...

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$0.69
Electrode clamp lock washer with a circular shape and central hole for secure fastening.
$0.49

Electrode Clamp Lock Washer WPX-152-560

Lock washer (WPX-152-560) for the electrode clamp bolt on Webasto DBW-2010 diesel burners. Prevents the electrode clamp bolt from loosening due to ...

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$0.49
A metal electrode gauge adjustment tool with a sturdy handle and precise measurement markings.
$10.07

Electrode Gauge Adjustment Tool WPX-310-646

Precision electrode gap adjustment tool (WPX-310-646) for setting the correct spark gap on Webasto DBW-2010 diesel burners. Proper electrode gap is...

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$10.07
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
Electromechanical relay retrofit kit with mounting hardware and wiring components visible.
$94.30

Electromechanical Relay Retrofit Kit

$94.30
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
Metal faceplate for SME-200-501 electronic control assembly with mounting holes.
Sold out
$61.52

Electronic Control Assembly Faceplate SME-200-501

Replacement faceplate (SME-200-501) for the electronic control assembly on Aqua-Hot hydronic heating systems. This panel provides the user interfac...

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$61.52
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Metal engine pump supply pipe with curved design and mounting flange
$0.00

Engine Pump Supply Pipe

Engine pump supply pipe for Aqua-Hot hydronic heating systems. This formed pipe connects the engine coolant supply to the Aqua-Hot unit, enabling e...

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$0.00
A metal hose adapter designed for connecting expansion tanks to plumbing systems.
$3.20

Expansion Tank Hose Adapter

Hose adapter for connecting expansion tank tubing in Aqua-Hot and Hydro-Hot hydronic heating systems. Provides a secure transition between differen...

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$3.20
Metal eye bolt nut with a circular loop and threaded shaft in silver finish
$0.99

Eye Bolt Nut - WPX-461-555

Nut (WPX-461-555) for the eye bolt assembly on Webasto DBW-2010 diesel burners. Secures the eye bolt that fastens the burner head to the heat excha...

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$0.99
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 rubber filler neck gasket with a circular shape and smooth edges
Save $0.09
$3.09
$3.00

Filler Neck Gasket PLE-GAS-010

Filler neck gasket (PLE-GAS-010) for Aqua-Hot hydronic heating system expansion tanks. Creates a leak-free seal between the filler neck and the exp...

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$3.09
$3.00
Save $0.09
Save $1.74
$58.14
$56.40

Filter, Fuel, Racor Spin-On, 10 Micron, AH/HH

Racor spin-on fuel filter rated at 10 microns, compatible with Aqua-Hot (AH) and Hydro-Hot (HH) hydronic heating systems. Traps dirt, debris, and w...

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$58.14
$56.40
Save $1.74

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