Vitomax HW-EH

Viessmann Industrial Boilers
Vitomax HW-EH
Hybrid hot water boiler

Vitomax HW-EH

We are pleased to present the hybrid boiler for industrial application, a combination of standard shell boiler and electric flange heaters.

  • Output range: 0.8 to 5.6 MW
  • H2 ready
  • Peak load compensation
  • Reduction of flue gas emissions

Vitomax HW-EH

The Vitomax HW‑EH is a hybrid hot water boiler that combines conventional combustion technology with electric heating to deliver high efficiency, flexible load management, and improved reliability. Designed for industrial and large‑scale heating systems, it enables reduced emissions and optimised energy use.

By integrating electric heat generation with fuel‑based operation, the Vitomax HW‑EH supports peak load balancing, faster start‑up, and reduced fossil fuel consumption, making it a future‑ready solution for low‑carbon heating systems.

Vitomax HW-EH

Hybrid Operation (Combustion + Electricity)

Combines fuel‑based heat generation with electric heating elements, improving operational flexibility and efficiency.

Optimised Start‑Up Process

Electric input enables rapid system start‑up, reducing delays associated with burner ignition.

Wide Load Range & Peak Load Compensation

Efficiently manages: Peak heating demand Fluctuating loads Partial load operation

Reduced Flue Gas Emissions

Lower reliance on combustion reduces COx and NOx emissions, improving environmental performance.

Dual Energy Source Management

Intelligent control coordinates combustion and electric heating for optimal performance.

Integration into Heating Networks

Suitable for:

Industrial heating systems
District heating plants
Commercial boiler installations

Renewable Energy Integration

Supports use of:
Surplus electricity (e.g. from PV or grid)
Power‑to‑heat applications

Flexible Fuel Integration

Compatible with:

Conventional fuels
Hydrogen blends
Future low‑carbon fuels

Document Name Description Document Type Language Action
System solutions for industry, commerce and municipalities Vitomax HW-EH PDF German Download
Hot water and steam generators: electrified future Vitomax HW-EH PDF English Download
What is the main advantage of a hybrid hot water boiler?

It combines two energy sources, allowing higher efficiency, lower emissions, and improved flexibility.

Can the Vitomax HW‑EH operate during fuel supply shortages?

Yes. The electric heating system provides backup heat generation, ensuring continuity.

Can the boiler handle fluctuating heating demands?

Yes. The hybrid setup offers excellent load flexibility and peak load compensation.

Who should choose the Vitomax HW‑EH?

It is ideal for operators who want:

Hybrid, future‑proof heating solutions
Reduced emissions and fuel consumption
High operational reliability
Flexible energy use

How Can We Help?

Have a question that doesn’t fit a specific category? Reach out to our team here for all other support
and information

    Become a Dealer

    Get directed to our Business Development team to start the authorization process and discuss sales support.

    Technical Assistance

    Get specialized help with system sizing, load
    calculation analysis, and technical data required for project design.

    Aftermarket Service

    Request support for warranty claims,
    scheduled maintenance, and genuine spare
    parts ordering.

    For more information : ahi@ahi-carrier.com