ComboMax ULTRA 70 – Electric Boiler & Instant Hot Water Heater: 4.5–24 kW

ComboMax ULTRA – The Ultimate All-in-One Electric Boiler and Instantaneous Water Heater

Efficient, Space-Saving Heating for Residential and Multi-Unit Applications

The ComboMax ULTRA is the perfect combination of an electric boiler for hydronic heating and an on-demand water heater, delivering powerful, energy-efficient performance in a single compact unit. Designed for residential homes, apartments, and condominiums, this innovative system offers reliable heat and domestic hot water—all while minimizing space and installation costs.

🔥 Dual-Purpose Electric Boiler + Instant Hot Water

Why install two separate units when you can get hydronic heating and domestic hot water from one high-performance system? The ComboMax ULTRA uses stored heat transfer fluid to deliver on-demand domestic hot water in under 7 seconds, thanks to its independent copper coil heat exchanger.

• Hydronic heating compatibility: Works with any standard hydronic system

• Instantaneous water heating: Heats potable water inside dedicated copper coils

• No standby loss: Domestic water is never stored—reducing energy use and eliminating bacteria risk

⚡ Powerful & Scalable Performance

Available in two compact sizes, the ComboMax ULTRA offers outputs from 4.5 kW to 29 kW, delivering energy-efficient heating for spaces up to 4,750 sq. ft. Its high-efficiency electric boiler ensures consistent performance, whether you're heating a single-family home or multi-unit residential complex.

💧 Superior Quality Domestic Hot Water

With instantaneous heating, potable water is continuously renewed—eliminating the risk of bacterial contamination (like Legionella) often associated with conventional water heaters. This design ensures:

• Clean, fresh water on demand

• No tank sediment or buildup

• Consistent temperature and pressure

💡 Maximized Savings, Minimal Footprint

• One-unit installation reduces plumbing, materials, and labor

• Fits in the same space as a traditional water heater

• Designed for fast, easy installation in one step

• Durable construction with a 30+ year lifespan

• 15-year warranty for peace of mind

• Almost maintenance-free with factory-assembled accessories

🧠 Smart Control with T2 UltraSmart® Controller

The integrated T2 UltraSmart® controller offers advanced monitoring and intuitive control for both heating and hot water functions:

• Adjustable temperature setpoints

• Real-time performance monitoring

• Boost mode and fault alerts

• Visual indicators for system status

• Compatible with building automation systems

🛠️ Standard Equipment Includes:

1. T2 UltraSmart® Digital Controller

2. Cold Water Inlet

3. Domestic Hot Water Outlet

4. Boiler Pressure Relief Valve

5. Copper Heat Exchanger Coils

6. Drain Valve

7. Heating Water Inlet

8. Heating Water Outlet

9. Electric Heating Elements

🔧 Factory Pre-Assembled Accessories for Easy Installation:

• Pressure regulator with backflow preventer

• Domestic hot water mixing valve

• Automatic air vent

• Temperature & pressure gauge

• Pressure relief valve for DHW circuit

✅ ComboMax ULTRA – The Smarter, Safer, and More Efficient Way to Heat Your Home

Whether you're upgrading your home’s heating system or designing a new build, the ComboMax ULTRA electric boiler and water heater combo delivers unmatched performance, safety, and efficiency in one compact, high-value unit. Eliminate extra equipment, reduce costs, and enjoy powerful, clean, and continuous comfort—all with one solution.

Warranty:

15-YEAR WARRANTY ON THE TANK AND THE COILS

2-YEAR WARRANTY ON ELECTRICAL AND MECHANICAL PARTS

Technical Documents:

• Brochure
• Manual
• Specifications 
• Selection Guide