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FREE USPS GROUND ADVANTAGE SHIPPING on items OVER $75.00 (UNDER 1 LB.) based on the weight per item. If you can't find a part you are looking for, call or text us at 970-518-3085!
FREE USPS GROUND ADVANTAGE SHIPPING on items OVER $75.00 (UNDER 1 LB.) based on weight per item. If you can't find a part you are looking for, call or text us at 970-518-3085!
Model 125D (Diesel) - AHE-125-DN2

Model 125D (Diesel) - AHE-125-DN2

by Aqua-Hot
Save 8% Save 8%
$5,290.00
$5,290.00 - $6,280.95
$5,290.00
$4,866.80
$4,866.80 - $5,758.66
$4,866.80

The Aqua-Hot 125D (Diesel) Hydronic Heating Systems are used in RVs and motorhomes to provide on-demand interior heat and continuous domestic hot water. The 125D is a compact, diesel-fueled unit designed for smaller coaches and applications requiring efficient, reliable performance.

Important Information:
  • All-in-One Heating Solution – Provides both interior heat and continuous domestic hot water through a single, integrated system.
  • Recommended Antifreeze Replacement – Requires approximately 4 gallons of red or green propylene glycol antifreeze.
    Click here to purchase antifreeze separately
Heater Includes:
  • 125D Aqua-Hot System
  • Diesel Burner Kit
  • Aqua-Hot 5in. LCD Screen
  • Fuel Filter 
  • Overflow Bottle with Fluid Level Sensor Kit
  • 2-Year Warranty
WARNING: PROFESSIONAL INSTALLATION RECOMMENDED
Installation Item List Below
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*** 2 Week Lead Time Not Including Shipping Days ***

PRODUCT SPEC SHEET, MANUALS & GUIDES

Ultra-Compact Hydronic Heating for Class B RV’s

Ultra-Compact Hydronic Heating for Class B RV’s

The compact Aqua-Hot 125 can be installed inside/under cabinetry or furniture. This highly efficient system operates as the van's heating system and continuous hot water supply. As many as 3 heat exchangers (black units in photo) can be placed throughout the van to bring heat where needed. The burner is installed on the underside of the van chassis for noise reduction and exhaust.

Installation Kit Includes 
  • Cozy III Heat Exchanger – Quantity: 3
  • White Thermistor Sensor – Quantity: 3
  • Molded Elbow Hose, 90°, ¾" x ¾" x 10" (AH/HH) – Quantity: 6
  • Constant Tension Hose Clamp, 15/16" for ¾" Hose – Quantity: 8
  • 5/8" Polytube Bend Support – Quantity: 4
  • 5/8" Safety Stripe Rubber Hose, 8 ft. Sections – Quantity: 8
  • 125 Series Wiring Harness (Coach Side) – Quantity: 1

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