Aqua-Hot 250 Diesel Hydronic Heater with Electric Element DO3 – Heater Only


SKU: AHE-250-D03 Category:


Ultra-Compact Hydronic Heating MODEL 250D

Highly efficient heating and continuous domestic hot water appliance in one compact efficient unit.

Heater with 1 Electric Element only.

Please see our other listing for complete installation kit, Part Number AHE-250-DIESEL-KIT.


  • –  Fueled by diesel and operated by 12V for off grid applications.
  • –  Available with a 110 electric element.
  • –  The all-in-one design of the Aqua-Hot series results in considerable cost and space savings.
  • –  Single, self-contained unit: Delivers residential-style interior heating using heat exchangers and/or in floor heat with the ability to deliver a luxurious supply of continuous hot water at 110°-120°F at a rate of 1.5 gallons per minute. It’s just like the luxury comfort in a traditional home or high-end diesel motorhome.
  • –  Quiet: Low voltage fans provide an almost completely noise free operation.
  • –  Fast Installs: Heating, domestic water, and fuel supply/outlet ports are located on top of the tank for easy connection access. Integrated mounting tray facilitates air intake and exhaust.
  • –  Easy Operation: Heat controlled by your thermostat and endless hot water by simply turning on a faucet.


  • –  Maximum Interior Heat Exchanger Btu/hr 40,000
  • –  Continuous, Tank-less Hot Water of 110°-120°F at 1.5 GPM
  • –  Aqua‐Hot Cozy Heat Exchangers Supports Up To 5 Connections
  • –  Fuel Diesel
  • –  Electric Element – Yes
  • –  Size 11.69″T x 12.45″W x 21.61L
  • –  Weight 84lb (empty) 113lb (full)

Additional information

Weight 60 lbs
Dimensions 18 × 30 × 12 in



Manufacturer Part Number



Item Length

Item Height

Item Width

Item Weight

Fuel Type

Power Source

Tank Capacity

California Prop 65 Warning

Condition New


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.