How to Replace the Nozzle on Your Aqua Hot System

Replacing the nozzle on your Aqua Hot system might seem intimidating, but with the right tools and a little patience, it’s a straightforward job.

This guide walks you through each step to ensure your system stays reliable and efficient — whether you’re a seasoned DIYer or just getting started.

Understanding Your Aqua Hot System

The Aqua Hot system is popular among RV owners because it provides both hot water and interior heating.

Like any piece of equipment, it needs regular maintenance to perform well. Replacing worn parts such as the hot water nozzle helps prevent failures and costly repairs, while keeping the system running efficiently.

Tools and Parts You’ll Need

Before starting, gather the following:

• Replacement nozzle (specific to your Aqua Hot model)

• Wrench set

• Screwdrivers

• Cleaning cloths

• Protective gloves

• Safety goggles

Make sure the nozzle matches your system model. You can find replacement parts at Hydronic Heating Warehouse’s website. Have your Aqua Hot model number handy when ordering.

Step 1: Safety First

Turn off the Aqua Hot system and disconnect it from all power sources before working.
This step is critical to avoid electrical shock or accidental burns.

Step 2: Locate the Nozzle

The nozzle is typically inside the burner assembly.
You may need to remove one or more access panels to reach it.

Use your screwdriver to carefully remove any fasteners and keep track of the screws for reassembly later.

Step 3: Remove the Old Nozzle

Use a wrench to carefully loosen and remove the old nozzle.
Be gentle — avoid damaging nearby components.

Once it’s out, inspect it for carbon buildup, clogging, or corrosion to understand what caused the issue.

Step 4: Install the New Nozzle

Thread in the new fuel nozzle and tighten it securely, but don’t overtighten.
Make sure it’s straight and properly aligned.

Double-check all surrounding parts to confirm nothing is loose or out of place.

Step 5: Reassemble the System

Reattach any covers or panels you removed.
Tighten all screws snugly so nothing rattles or vibrates loose during operation.

Step 6: Test the System

Reconnect power and turn the Aqua Hot system back on.
Let it run for a few minutes and verify:

• The burner ignites properly

• There are no leaks

• Heat output is steady

• There are no unusual sounds

Troubleshooting Common Issues

When to Call a Professional

If the burner won’t ignite, if you notice fuel odors, or if the system continues to misfire after replacement, contact a certified Aqua Hot technician.
Sometimes, nozzle issues are symptoms of a larger fuel or air supply problem.

Final Thoughts

Replacing the nozzle on your Aqua Hot system is manageable with the right preparation.
By following these steps, you’ll help your system deliver consistent heat and hot water for years to come.

Always prioritize safety, use genuine parts, and don’t hesitate to call a professional if you’re unsure.
Routine maintenance like this keeps your Aqua Hot system performing at its best.