• [email protected]
  • +1-844-649-5886
  • May 1 - Sept 30 Monday to Friday: 7:00 AM to 5:00 PM (ET), October 1 - April 30 Monday to Friday: 7:00 AM to 9:00 PM (ET)
  • Viessmannstraße 1, Allendorf (Eder), Germany

Viessmann is a German manufacturer of heating and refrigeration systems. They offer a wide range of products for both residential and commercial use, including boilers, solar thermal systems, heat pumps, and air conditioning systems.

Viessmann Warranty Coverage, Registration, Contact Details & Customer Reviews

Here, we’ll be sharing the contact details of Viessmann, details on what the Viessmann warranty covers and doesn’t cover, how to register for a warranty extension, and the customer ratings for Viessmann according to reviews.

What are the contact details of Viessmann?

Here’s the contact information for Viessmann, primarily for individuals residing in the United States

Viessmann Germany Office Address (Headquarter)Viessmannstraße 1, Allendorf (Eder), Germany
Viessmann Office Address (US)Viessmann Manufacturing Company (U.S.) Inc. 45 Access Road Warwick, RI 02886
Viessmann Tech Support Phone Number+1-844-649-5886
Viessmann Email Address[email protected]
Viessmann Customer Service FormVisit here
Viessmann Customer Service HoursMay 1 – Sept 30 Monday to Friday:
7:00 AM to 5:00 PM (ET),
October 1 – April 30 Monday to Friday:
7:00 AM to 9:00 PM (ET)
Viessmann Each Product Warranty DetailsVisit here
Viessmann Social MediaTwitter , Instagram , Facebook , LinkedIn ,
YouTube , TikTok , Glassdoor
Viessmann contact details


  • The Viessmann US office is currently closed to the public for visitation.
  •  For inquiries from outside the US, visit here.

What does Viessmann Warranty Cover & not?

Viessmann offers a variety of warranties on their products, depending on the specific product and region.

Warranty Coverage

Viessmann warranties typically cover:

  • Defects in materials and workmanship: This includes any parts that fail due to manufacturing defects or faulty materials.
  • Labor costs for repair or replacement: This covers the cost of labor for a qualified technician to diagnose and repair the problem.
  • Transportation costs: In some cases, Viessmann may cover the cost of transporting the product to and from an authorized service center.

What’s Not Covered

Viessmann warranties typically do not cover:

  • Damage caused by improper installation or use: This includes damage caused by negligence, misuse, or accidental damage.
  • Normal wear and tear: This includes the gradual deterioration of parts over time due to normal use.
  • Maintenance and cleaning: This includes the cost of regular maintenance and cleaning tasks.

For more detailed information on Viessmann Warranty, visit here.

How to Register for a Warranty Extension?

To register your Viessmann product for an extended warranty, follow these steps:

  • Visit the Viessmann website for your region.
  • Find the “Warranty” section.
  • Locate the product registration page.
  • Enter the product information, including the serial number and date of purchase.
  • Submit the registration form.

What are the ratings of Viessmann according to customer reviews?

Viessmann’s customer reviews are generally positive, with an average rating of 4.1 out of 5 stars. Customers praise Viessmann’s products for their quality, efficiency, and reliability. Some reviewers also mention excellent customer service.

Pros as per positive reviews

  • High quality and reliability.
  • Smart technology.
  • Long warranties.
  • Focus on Sustainability.

Cons observed as per negative reviews

  • Limited Availability.
  • High Cost.
  • Complex installation.


Viessmann is a global company with a fine reputation for quality and innovation. However, it is important to be aware of the higher cost and limited availability of their products. If you are looking for a reliable and efficient heating and cooling system, Viessmann is a good option to consider.

Who Are We?

ContactForSupport is an online phone directory that covers a wide array of categories including HVAC. We offer efficient resources and their contact information with our 24/7 support. You can call us anytime, any day to get your concerns resolved.

Where is the headquarters of Viessmann in Germany?

Viessmann’s headquarters is in Allendorf (Eder), Germany, at Viessmannstraße 1.

Where is the Viessmann office in the United States?

The Viessmann Manufacturing Company (U.S.) Inc. is situated at 45 Access Road, Warwick, RI 02886.

How do I contact Viessmann?

You can contact Viessmann through their tech support phone at +1-844-649-5886, via email at [email protected], or by visiting their customer service form online.

Is Viessmann a German company?

Yes, Viessmann is a German company specializing in heating and refrigeration systems, headquartered in Allendorf (Eder), Germany.

What is the lifespan of a Viessmann?

The lifespan of a Viessmann boiler is typically expected to be around 15 to 20 years, aligning with the general industry standard for boiler longevity.

What are Viessmann’s customer service hours?

From May 1 to September 30, customer service operates Monday to Friday, 7:00 AM to 5:00 PM (ET). From October 1 to April 30, it’s 7:00 AM to 9:00 PM (ET) on weekdays excluding festive holidays from both seasons.

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