You have questions about our fuel cells? Just send us your question via our contact form or give us a call.

Individual advice, update service, review of the installation situation or repairs: Just make an appointment!

Service request

Hotline throughout Europe & Asia

+49 89 673 592-555

Mon – Fri 09:00 – 17:00

Free* hotline in Europe

00800 / 732 762 78

*From landlines in Germany, Belgium, Denmark, France, Great Britain, Italy, The Netherlands, Norway, Austria, Sweden, Switzerland and Spain.

Hotline throughout North America

+1 800 565 743 1

Mon to Fri 8 am to 4:30 pm MST

E-mail contact North America: [email protected]

Firmware Update

By installing the latest firmware, you can benefit from our most recent developments and your EFOY Pro fuel cell is always kept up-to-date. The update is simple and uncomplicated.

Firmware Update

Service Tool

Do you receive a message from your fuel cell and want to know what it means?

to the Service Tool

Service enquiries

Service Center Brunnthal
Mon – Thurs 09:00 – 17:00,
Fri 09:00 – 14:00.

Please contact our service team to arrange an appointment.

Do you have a specific question about your product or would you like to send it to our technical service? Then simply fill out our service request form.

Service request

For customers in North America:
Hotline: 1 800 565 743 1
Email: [email protected]

Warranty conditions

SFC Energy AG grants a warranty for your EFOY Pro fuel cell. Detailed information about the warranty in your country can be found here or in our downloads.


Energy Calculator

Thanks to the EFOY Energy Calculator you can calculate precisely your demand for energy and you receive a recommendation which EFOY fuel cell will be the appropriate one for you.

To the Energy Calculator


All answers to typical questions can be found in our FAQ section: warranty and repair, installation, fuel cartridges, temperature etc.

Questions & Answers


Flyers, certificates, data sheets, instructions, warranty conditions, etc. can be found in our download area.


EFOY Cloud

Control your EFOY fuel cells comfortably via remote access using the EFOY Cloud App.

Go to EFOY Cloud

EFOY Videos

The EFOY Pro Fuel Cell

The EFOY Pro Fuel Cell is the perfect power generator for a wide range of stationary and mobile industrial applications. The solution generates power reliably for weeks and months and minimises the number of user interventions. Watch the video to discover the many advantages and applications for yourself.

The EFOY Hydrogen Fuel Cell – Hydrogen power for higher power ranges

EFOY Hydrogen provides reliable, powerful and uninterrupted climate-neutral energy for all applications in the high power range. Experience the power of EFOY Hydrogen.

Goodbye Diesel – Hello EFOY

Discover the advantages of the EFOY fuel cell over conventional diesel generators now in our comparison video.

46 Tons

Annual CO2 savings

Compared to a conventional diesel generator, for example, a 5 kW hydrogen fuel cell energy solution saves up to 45.6 tons of CO2 based on an assumed annual demand of 43,800 kilowatt hours (kWh). This corresponds to the driving perfomance of a diesel-powered car of about 250,000 kilometers.

EFOY Tutorials

EFOY Cloud

Find out how you can create your EFOY Cloud account in just a few clicks and operate your fuel cells easily from anywhere.

EFOY Setup

Watch our tutorial on how to setup your EFOY and EFOY Pro for the first time. We show you what you need to pay attention to in order to connect your EFOY correctly.

Refilling EFOY service fluid

In this tutorial we will show you step by step how to easily refill the EFOY service fluid. The service fluid is only required if your fuel cell explicitly draws attention to it with a notice. This may be the case, for example, after the EFOY has not been used for a long time.

Dear SFC customer,

our technical service can currently only be reached via our contact form below.

Thank you for your understanding!

Contact form

Hotline throughout North America

1 800 565 743 1

Mon to Fri 8 am to 4:30 pm MST

E-mail contact North America

[email protected]

Individual advice, update service, review of the installation situation or repairs: Just make an appointment!

EFOY Pro Newsletter

You will always be up-to-date with the EFOY Pro Newsletter. Subscribe now and be the first to know when there is any news!

to the Newsletter