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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.

12 VDC heater with engine preheat feature for vehicle use, model HHE-200-06E.
Sold out
$14,613.70

Heater, HH 12 VDC w/Engine Preheat (HHE-200-06E)

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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$14,613.70
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12 VDC heater with engine preheat feature, designed for vehicle use.
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$15,625.10

Heater, Hh 12 VDC w/Engine Preheat (HHE-200-05E)

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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$15,625.10
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12 VDC heater with engine preheat function, model HHE-200-04E, compact design.
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$15,502.25

Heater, HH 12 VDC w/Engine Preheat (HHE-200-04E)

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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$15,502.25
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12 VDC heater with engine preheat feature, designed for vehicle use.
Sold out
$15,439.55

Heater, HH 12 VDC w/Engine Preheat (HHE-200-03E)

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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$15,439.55
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12 VDC heater with a 1650 W output and inner dual coil design for engine use.
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$9,487.05

Heater, HH 12 VDC 1650 W-EL Inner DW-Coil w/Engine PH (HHE-200-09E)

This unit has been discontinued. Please see the replacement listed under ‘For Upgrade.’

$9,487.05
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12 VDC 1650 W heater with inner DW coil and engine PH, model HHE-200-08E discontinued unit
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$9,816.00

Heater, HH 12 VDC 1650 W-EL Inner DW-Coil w/Engine PH (HHE-200-08E)

This unit has been discontinued. Please see the replacement listed under ‘For Upgrade.’

$9,816.00
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12 VDC heater with engine preheat feature, designed for efficient warming.
Sold out
$18,303.60

Heater, HH 12 VDC w/Engine Preheat (HHE-200-07E)

$18,303.60
Sold out

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