Heating and Cooling Heaters

AQUA HOT

CONS SCREW, SHEET METAL, 10 X 1/2,

$15.20

SKU: A0EC HDX-040-400

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The AQUA HOT 400D is a diesel motorhome heater designed for compact installations. It provides continuous on-demand hot water and quiet, clean interior heat. This system utilizes two energy sources: AC shore power for light-duty heating and hot water needs, and diesel fuel for colder temperatures and continuous hot water supply.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAQUA HOT
Part NumberA0EC HDX-040-400

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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