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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.

Aqua-Hot Heater model HHE-700-07N with a 12 VDC engine preheat feature.
Sold out
$13,460.60

Aqua-Hot Heater – HH 12 VDC | Engine Preheat Model HHE-700-07N

If your unit is sold out or discontinued, choose your model to see the recommended replacement. Some upgrades also require a harness or pin kit, wh...

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$13,460.60
Sold out
Aqua-Hot diesel heater model HHE-700-06N with 12 VDC power for vehicle heating systems
Sold out
$13,460.60

Aqua-Hot Heater – HH 12 VDC | Diesel Model HHE-700-06N

If your unit is sold out or discontinued, choose your model to see the recommended replacement. Some upgrades also require a harness or pin kit, wh...

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$13,460.60
Sold out
Aqua-Hot Heater in black, designed for 12 VDC engine preheating replacement.
Sold out
$14,483.85

Aqua-Hot Heater – HH 12 VDC | Engine Preheat Replacement (HHE-700-05N)

If your unit is sold out or discontinued, choose your model to see the recommended replacement. Some upgrades also require a harness or pin kit, wh...

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$14,483.85
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Aqua-Hot heater with 12 VDC engine preheat feature, model HHE-700-04N.
Sold out
$14,244.80

Aqua-Hot Heater – HH 12 VDC Engine Preheat | Model HHE-700-04N

If your unit is sold out or discontinued, choose your model to see the recommended replacement. Some upgrades also require a harness or pin kit, wh...

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$14,244.80
Sold out
12 VDC heater without engine preheat, model HHE-700-03N, compact design.
Sold out
$14,189.90

Heater, HH 12 VDC w/o Engine Preheat (HHE-700-03N)

If your unit is sold out or discontinued, choose your model to see the recommended replacement. Some upgrades also require a harness or pin kit, wh...

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$14,189.90
Sold out

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