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.
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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Brass check valve (PLX-2A1-300) for Aqua-Hot hydronic heating systems. Prevents reverse coolant flow in the heating loop, ensuring one-directional ...
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Fleetguard fuel/water separator filter (RACOR FLX-R12-TRA) for Aqua-Hot diesel hydronic heating systems. Removes water and contaminants from diesel...
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Replacement label for the 3 Qt. expansion tank used in Aqua-Hot and Hydro-Hot hydronic heating systems. Restores factory identification markings in...
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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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Complete fuel fitting kit with JIC male connector, nut, and ring for Aqua-Hot diesel hydronic heating systems. Provides a proper leak-free connecti...
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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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For use in Aqua-Hot Models 5/16 tubing HH 08e, 08m, 09e, 09m, 450-DE1, DM1
Refractory insulation for Aqua-Hot hydronic heating system combustion chambers. This high-temperature insulation lines the interior of the combusti...
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Adjustable tempering valve (PLX-4A8-180) with a range of 120°F to 160°F for Aqua-Hot hydronic heating systems. Mixes hot and cold water to deliver ...
View full detailsHVCC S1 pump for Aqua-Hot hydronic heating systems. This circulation pump moves heated coolant through the system's zones, cabin heaters, and domes...
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Bosch assist pump kit for Aqua-Hot hydronic heating systems. The assist pump provides supplemental coolant circulation for systems with long plumbi...
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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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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 ...
View full detailsWater heater insulation blanket kit for supplemental insulation on Aqua-Hot and Hydro-Hot hydronic heating systems. Wraps around the heating unit t...
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Replacement blower wheel fan motor (HDX-162-511) for Aqua-Hot heating systems. Powers the blower fan that circulates warm air through the cabin hea...
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Preformed 3/4-inch 90-degree molded hose for Aqua-Hot and Hydro-Hot hydronic heating systems. Pre-shaped for specific routing applications where a ...
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Preformed 3/4-inch 90-degree molded hose, 18-1/2 inches in length, for Aqua-Hot and Hydro-Hot hydronic heating systems. This pre-shaped elbow hose ...
View full detailsModified brass insert fitting for Aqua-Hot and Hydro-Hot hydronic heating systems. This specialty fitting is designed for specific plumbing connect...
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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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Bend support for 5/8-inch polytube used in Aqua-Hot and Hydro-Hot hydronic heating systems. Prevents kinking and maintains proper flow when routing...
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Air assembly combination valve for Aqua-Hot and Hydro-Hot hydronic heating systems. This multi-function valve combines air venting and pressure rel...
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Adjustable tempering valve with a temperature range of 120°F to 160°F for Aqua-Hot and Hydro-Hot domestic hot water systems. Mixes hot and cold wat...
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Pump bracket isolator (PLX-100-837) for Aqua-Hot hydronic heating systems. These rubber isolators mount between the pump bracket and the chassis to...
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5-quart expansion tank assembly (PLE-622-902) for Aqua-Hot hydronic heating systems. The larger capacity accommodates greater coolant volume in sys...
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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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3-quart overflow bottle with factory decal and 5/8-inch barb fitting for Aqua-Hot hydronic heating systems. Captures and recovers coolant overflow ...
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3-quart expansion tank with integrated internal fluid level sensor (PLE-063-200) for Aqua-Hot hydronic heating systems. Features 5/8-inch barb fitt...
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Small filler neck (TNX-NEC-FLL) for Aqua-Hot hydronic heating system expansion tanks. Provides the fill point for adding coolant to the system. Rep...
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Replacement label for the 5 Qt. expansion tank used in Aqua-Hot hydronic heating systems. Restores factory identification markings including fill l...
View full detailsReplacement 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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