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Aqua-Hot heater replacement systems displayed with logo for authorized service center.

Aqua-Hot Heaters | Replacement Diesel & Electric RV Heating Systems

Find Your Aqua-Hot Heater or Replacement Model

Use the filters on the left (or tap Filters on mobile) to locate your Aqua-Hot heater model. Once selected, you’ll see:

✅ Your current Aqua-Hot model — active or discontinued
🔄 Recommended replacement unit(s) — factory-approved alternatives
🔌 Required harness or pin kits — listed under “For Upgrade”

If your exact unit isn’t listed, choose the closest match to view the recommended factory replacement. Each product page includes lead time, upgrade notes, and technical specifications.

All Aqua-Hot diesel and electric hydronic heaters in this collection are OEM-grade replacements — engineered for consistent performance, quiet operation, and long service life in RVs, buses, and luxury motor coaches.

Hydronic heater with a 45.0 K-BTU capacity and 12 VDC power, featuring a digital display.
Save $127.72
$7,327.71
$7,199.99

Heater, Hydronic-D 45.0 K-BTU 12 VDC 1650 W-EL W-Reporter (AHE-400-D02)

⚠️ Manufacturer Special Order – Final SaleThis product is ordered directly from the manufacturer and is non-returnable.By purchasing this item, you...

View full details
$7,327.71
$7,199.99
Save $127.72
Hydronic-D 45.0 K-BTU 12 VDC 1650 W electric hydronic heater unit.
Sold out
$7,058.99

Heater, Hydronic-D 45.0 K-BTU 12 VDC 1650 W-EL (AHE-400-D01)

⚠️ Manufacturer Special Order – Final SaleThis product is ordered directly from the manufacturer and is non-returnable.By purchasing this item, you...

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$7,058.99
Sold out
Hydronic-P heater with 51.5 K-BTU output, 12VDC power, and 1650 watts electric heating.
$5,951.08

Heater, Hydronic-P 51.5 K-BTU 12VDC 1650 W-EL (AHE-400-P01)

⚠️ Manufacturer Special Order – Final SaleThis product is ordered directly from the manufacturer and is non-returnable.By purchasing this item, you...

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$5,951.08
Hydronic heater with a 45.0 K-BTU capacity and 12 VDC power supply.
$7,058.99

Heater, Hydronic-D 45.0 K-BTU 12 VDC 1650 W-EL (AHE-400-DW1)

⚠️ Manufacturer Special Order – Final SaleThis product is ordered directly from the manufacturer and is non-returnable.By purchasing this item, you...

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$7,058.99
Hydronic heater with a 37.5 K-BTU output and 12VDC power supply.
Save $231.53
$5,631.52
$5,399.99

Heater, Hydronic-D 37.5 K-BTU 12VDC 1500 W-EL

⚠️ Manufacturer Special Order – Final SaleThis product is ordered directly from the manufacturer and is non-returnable.By purchasing this item, you...

View full details
$5,631.52
$5,399.99
Save $231.53

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