I would agree with your assessment that your Aqua-Hot probably needs a new nozzle. If the unit is not used, it will normally clog the nozzle. We usually replace the fuel filter too, but may not be needed in your case. You will get optimum life from the nozzle if you run the diesel at least once per month.
Your unit should still be under warranty if there are any additional problems. Check with Aqua-Hot for more details. They will need your model number, serial number and date of purchase.
It is not too hard to service the unit yourself. There are shop manuals on the Aqua-Hot website to assist you. I have also written a number of guides and how-to-do-it descriptions that you will find on the group below.
There are a number of online web stores that provide filters, nozzles and other parts. Search for: Hydronic RV heater repair parts.
- Roger Berke -
Sacramento, CA until about Christmas, Indio, CA then Quartzsite.
HydronicRVHeating : Hydronic-RV-Heating