Espar Hydronic AquaSystem - On-Demand Hot Water & Cabin Heating System

Espar Hydronic AquaSystem - Complete Heating & Hot Water System

The ultimate all-in-one solution for van life. The Espar Hydronic AquaSystem combines powerful cabin heating and tankless on-demand hot water in one integrated system - the premium choice for serious four-season van builders.

🔥 Premium heating solution - Contact us for availability and installation options

Official Espar AquaSystem Video Series

Watch Espar's complete AquaSystem installation and overview series:

• Part 1: AquaSystem Overview & Introduction
• Part 2: Installation Guide
• Part 3: System Setup
• Part 4: Configuration & Controls
• Part 5: Hot Water System
• Part 6: Troubleshooting & Maintenance

These official Espar videos provide detailed information about the AquaSystem's features, installation, and operation.

What Makes the AquaSystem Different?

Unlike standard air heaters, the Hydronic AquaSystem uses a liquid-based heating system that provides:

• Radiant Cabin Heat - Circulates hot coolant through heat exchangers for comfortable, even warmth
• Tankless On-Demand Hot Water - Unlimited hot water for showers, dishes, and daily living without a bulky tank taking up space
• Engine Preheating Capability - Can be configured to warm your engine block for easier cold-weather starts (additional parts required - contact us)
• Floor Heating Capability - Add radiant floor heating for ultimate comfort (floor heating kits available - contact us)
• 5kW Heat Output - Powerful heating for larger builds and extreme climates

Key Features

• All-in-One System: Heating and hot water in one integrated unit
• Tankless On-Demand Hot Water: Unlimited hot water whenever you need it without taking up valuable space
• Dual Fuel Options: Available in diesel or gasoline versions - specify your fuel type when ordering
• Efficient Operation: Hydronic heating provides even heat distribution throughout your space
• Expandable System: Add radiant floor heating or engine preheating with additional components
• Precise Temperature Control: Digital controller for exact comfort settings
• Low Power Draw: 12V operation with minimal battery consumption

Technical Specifications

• Heat Output: 5 kW
• Fuel Type: Diesel or Gasoline (specify when ordering)
• Voltage: 12V DC
• Weight: 15 kg (33 lbs)
• Hot Water: Tankless on-demand system
• Operating Temperature Range: -40°C to +80°C (diesel) / -40°C to +60°C (gasoline)
• Warranty: 2-year manufacturer warranty

What's Included

• Espar Hydronic AquaSystem unit
• Digital controller
• Complete installation hardware

Is the AquaSystem Right for You?

The Hydronic AquaSystem is a premium investment for van builders who want:

• Unlimited hot water for showers and daily living
• Radiant heat distribution (not just forced air)
• Optional radiant floor heating for maximum comfort
• Optional engine preheating for cold climates
• An integrated, professional-grade heating solution
• Maximum comfort for full-time or extended van life

Not sure if you need the full AquaSystem? If you only need cabin heating without hot water, consider our Espar air heaters - they're more affordable and easier to install.

Installation & Support

The Hydronic AquaSystem is a complex installation requiring plumbing, electrical, and fuel system integration. We strongly recommend professional installation.

Contact us to discuss:

• Professional installation services
• Which fuel type (diesel or gasoline) is right for your vehicle
• Complete parts list for your specific vehicle
• System design and layout planning
• Technical specifications and compatibility

Compare Heating Options

Air Heaters (simpler, more affordable):

• Espar S3 D2L - 7,500 BTU Diesel
• Espar M3 D4L - 14,000 BTU Diesel
• Espar S3 B2L - 7,500 BTU Gasoline
• Espar M3 B4L - 14,000 BTU Gasoline

Hydronic System (premium, all-in-one):

• Espar Hydronic AquaSystem - Heating + Tankless On-Demand Hot Water + Optional Floor Heating + Optional Engine Preheat
• Note that we have not yet designed and installed a Floor heat kit or an optional Engine pre-heat kit. These kits will be created early 2026

Canadian van builders trust Driftwood Vans for premium four-season heating solutions. Fast shipping from coast to coast.

Questions about the AquaSystem, floor heating, or engine preheating options? Contact us - we're here to help you choose the right heating solution for your build.