Parts.RV Hydronic Heater Repair


Mixing Valve - PLX-4A8-180


Tempering / Mixing valve for Aqua-Hot heaters in the 431/AHE-100-02S series.


You can normally leave existing body soldered in place and install the new internal parts from tempering valve. 


Install directions are included.


Price $ 300.00


Limited stock ready for immediate shipping

Aqua-Hot list price is $410.63


No Solder Filler Neck Kit


NO-Solder filler neck replacement kit.  Remove leaking brass filler neck and replace with kit that does not need to be soldered.



Sold Out!   Sorry all stock gone.




Tester, Refractometer Ethylene & Propylene Glycol



  • Tester, Refractometer Ethylene and Propylene Glycol
  • MSX-907-162 - Hard Case
  • Used to test coolant / water ratio.
  • Includes hard case, droppers, and directions.










Price $30.00


In stock ready for immediate shipping


Pump, U4846, Circulation, 12VDC - WPX-894-52A


Built in bracket as shown.


Has 3/4 inch barbed inlet and outlet fittings.


Alternate part number: 5010030B







Price $400.00


In stock ready for immediate shipping