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.
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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Aqua-Hot 100 cab heater for hydronic heating systems in RVs, coaches, and specialty vehicles. This compact heat exchanger with integrated fan provi...
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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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Green 5/16-inch hose clamp for securing rubber hoses in Aqua-Hot and Hydro-Hot hydronic heating systems. Color-coded green for easy identification ...
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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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Radiator cap with bail handle and tethering chain (PLX-403-000) for Aqua-Hot hydronic heating system expansion tanks. The chain prevents the cap fr...
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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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"Make a splash with perfectly tempered water - get your Aqua-Hot Parts 145F Tempering Valve PLX-09P-100 today!"
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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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For use in Aqua-Hot Models 5/16 tubing HH 08e, 08m, 09e, 09m, 450-DE1, DM1
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Aqua-Hot 200 cabin heater for hydronic heating systems in RVs, coaches, and specialty vehicles. This larger capacity heat exchanger with built-in f...
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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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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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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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Refractory insulation for Aqua-Hot hydronic heating system combustion chambers. This high-temperature insulation lines the interior of the combusti...
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3-quart expansion tank with sensor kit (MSE-200-OFB) for Aqua-Hot and Hydro-Hot hydronic heating systems. Provides coolant expansion capacity and f...
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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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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 details5/8-inch red oxygen barrier PEX tubing, 300-foot roll, for Aqua-Hot and Hydro-Hot hydronic heating installations. The oxygen barrier layer prevents...
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...
View full detailsBrass 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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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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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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