$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
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.
Save $27.91
$930.30
$902.39
BR-809 Circulation Pump, 12 VDC - NEW
BR-809 circulation pump, 12 VDC, for Aqua-Hot and Hydro-Hot hydronic heating systems. This new-style pump circulates heated coolant through the sys...
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$930.30
$902.39
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$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
$59.99
Small Filler Neck TNX-NEC-FLL
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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$59.99