[Trainer]

What is leaking out underneath the AH where the exhaust pipe goes through the floor of the basement? it could be AH coolant, fresh water or maybe engine coolant. Diesel rarely leaks like a sieve so I do not think the burner components are involved. But if so, they are repairable.

Engine coolant is not likely as the engine preheat pump or the diesel main engine needs to be running for engine coolant to leak like a sieve. If engine coolant, a leak in piping where the burner is located is repairable. But if from engine heating loop in the heater, reman $$$ or replacement $$$$$.

So if AH coolant, most likely something to do with the AH boiler fluid (regular engine coolant, probably green color) is leaking. This could be the tank drain fittings, the electric heating element(s), maybe the coolant piping in the area where the burner is located or a split in the tank. All are repairable except the tank split. That is a reman $$$ or replacement $$$$$$.

If water, then the fresh water heating loop has a leak. That could be fittings in the area where the burner is located and repairable or a split fresh water loop in the heater which is reman $$$ or replacement $$$$$$.

Newell can fix or you can come to me in Baytown, Tx, and I can fix. I have a place for you to park and plug in while here.

Reman is a month long a process from start to finish. Your heater is removed, sent to AH for Reman and installed when received back. All function of the AH is down for the month. The fresh water system can work and the main engine can run. We loop those lines so no leak while using cold water or running engine.

Replacement is two days of work. A new heater is shipped one week after the order is placed and arrives 4 work days later. Function of the AH is down for the two days.

A fix is a few hours of labor. Come here as we eat good while you are in town.

In the meantime, if we can determine what is leaking, we may be able to get you motoring without it leaking by looping the lines to and from the heater containing the leaking fluid. But that function of the AH would be down till fixed.

Lastly, there are Aqua Hot Factory Authorized service centers scattered around the USA that can address the AH too.

Boy, I hope this helps as it took over 30 minutes for me to think about it, write it and edit it. Kept finding something I had forgotten to include had to add that item too. All the best.