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Aqua-Hot Parts | OEM Replacement Components & Repair Kits

Aqua-Hot Parts | OEM Replacement Components & Repair Kits

Genuine Aqua-Hot Parts for Reliable Hydronic Heating

Keep your Aqua-Hot system performing like new with our full selection of OEM Aqua-Hot parts and accessories. Each component is engineered to fit perfectly, ensuring consistent heat, efficient operation, and long-term reliability.

Whether you’re performing annual maintenance, troubleshooting a heating issue, or rebuilding your entire system, you’ll find every part you need — from filters and nozzles to pumps, thermostats, sensors, and circuit boards.

✅ Genuine OEM Aqua-Hot replacement parts
🔧 Compatible with Aqua-Hot & Hydro-Hot systems
🔥 Maintain peak heating and hot water performance
🧰 Ideal for RVs, coaches, and hydronic service centers

Use the filters to quickly locate the right part for your specific model. Each product page includes part numbers, compatibility notes, and installation details to help you complete your repair confidently.

For annual maintenance, explore our Aqua-Hot Service Kits and Cost-Saving Bundles — curated for convenience and long-term system protection.

Garber General Fuel Filter with a cylindrical design and metal housing.
from $28.00

General Fuel Filter FLE-120-100 (2605R) | Aqua-Hot, Hydro-Hot & Oasis

The Garber R Fuel Filter is a direct replacement part for maintaining clean fuel delivery to the Aqua-Hot & Hydro-Hot hydronic heating systems....

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from $28.00
Metal pressure relief valve with 125psi rating and threaded connection
Sold out
$121.86
$118.20

Pressure Relief Valve 125psi PLX-111-125

125 PSI pressure relief valve (PLX-111-125) for Aqua-Hot hydronic heating systems. Protects the closed-loop coolant system from dangerous over-pres...

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$121.86
$118.20
Sold out
AH Fuel supply line tube assembly made of metal with connectors on both ends
$28.99

AH Fuel Supply Line Tube Assembly

Fuel supply line tube assembly for Aqua-Hot diesel hydronic heating systems. Delivers diesel fuel from the tank to the burner assembly at the corre...

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$28.99
Refractometer with a clear scale for measuring glycol antifreeze concentration.
Save $2.62
$87.18
$84.56

Refractometer for Glycol Antifreeze MSX-907-162

Refractometer (MSX-907-162) for testing glycol antifreeze concentration in Aqua-Hot and Hydro-Hot hydronic heating systems. Quickly measures the fr...

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$87.18
$84.56
Save $2.62
Fuel return line tube assembly with connectors and durable rubber construction.
$22.45

AH Fuel Return Line Tube Assembly - FLE-421-852

Fuel return line tube assembly (FLE-421-852) for Aqua-Hot diesel hydronic heating systems. Routes unused fuel from the burner back to the fuel tank...

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$22.45
Black nylon coupler fitting, 3/4 inch size, designed for plumbing connections.
$2.62

AH Black Nylon Coupler Fitting 3/4 inch PLX-000-825

Black nylon coupler fitting (PLX-000-825) for joining 3/4-inch tubing in Aqua-Hot hydronic heating systems. Provides a secure, leak-free inline con...

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$2.62
Outer gasket for flame tube compatible with Beckett burner models 375 and 525
$11.38

Flame Tube Outer Gasket (for models 375 & 525) HDE-700-200

For use with models 375 & 525 ATTN: Gasket only used on models that have Beckett burners

$11.38
Gasket kit for ignition module with multiple rubber and metal gaskets included.
$11.75

Gasket Kit Ignition Module

Ignition module gasket kit for Aqua-Hot hydronic heating systems. Contains the gaskets and seals required when servicing or replacing the ignition ...

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$11.75
$47.83

Valve, Ball Asm 1/2 in. (F) NPT Brass w/Fitting AHE-03, 04

Brass ball valve assembly with 1/2-inch female NPT connections and fitting for Aqua-Hot AHE-03 and AHE-04 hydronic heating systems. Provides a reli...

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$47.83
Vented hydronic heater overflow cap with attached tether in black plastic design
$32.92

Vented Hydronic Heater Overflow Cap with Tether

Vented overflow cap with tether for Aqua-Hot and Hydro-Hot hydronic heating system expansion tanks. The vented design allows controlled pressure re...

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$32.92
Straight 1/2 inch PEX fitting with smooth connectors for plumbing applications.
$10.00

Straight 1/2 inch Pex Fitting

Straight 1/2-inch PEX fitting for Aqua-Hot and Hydro-Hot hydronic heating systems. Creates a secure inline connection between 1/2-inch PEX tubing r...

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$10.00
Tempering valve repair kit with multiple brass and plastic components for plumbing maintenance
$393.59

Tempering Valve Repair Kit - AH PLX-4A8-18R

Tempering valve repair kit (PLX-4A8-18R) for Aqua-Hot hydronic heating systems. Contains the internal components needed to rebuild and restore prop...

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$393.59

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