Service non existiend! I have an automated bank transfer to pay the monthly payments for our heating system. Unfortunately Thermondo is not able to route an incoming payment to the correct custome... See more
Company replied
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
See what reviewers are saying
Invited
100% Zufriedene. Everything was excellent! Perfect, orderly, friendly, and clean worker.
Company replied
Invited
This firm and its employees are probably one of the most reliable in Germany. It's never too much trouble to explain what is going on with the equipment, and when a problem does arise it is speedily... See more
Company replied
The people from Thermondo were always extremely helpful, professional and friendly in their work. All the people I spoke with during the process, from Sales to installation, provided tremendous suppor... See more
Company replied
Company details
About thermondo
Written by the company
Als Deutschlands größter Wärmepumpen-Installateur mit mehr als 1.000 Mitarbeitern und der Erfahrung von über 50.000 Heizungswechseln hat es sich thermondo zur Aufgabe gemacht, den Umstieg auf die Wärmepumpe im Bestandsbau zu beschleunigen. Unsere festangestellten Installationsteams sind in ganz Deutschland für Sie da und ermöglichen es Ihnen schnell und unkompliziert auf die Wärmepumpe umzusteigen.
Wärmepumpe im Komplettpaket
Wir bieten das Komplettpaket und kümmern uns um alle Prozesse rund um den Umstieg auf die Wärmepumpe: Von der Entsorgung der alten Heizung über Planung, Finanzierung und Förderung, bis hin zur Installation und Wartung der Wärmepumpe.
Wie kontaktieren Sie uns am besten?
Bei Serviceanliegen wenden Sie sich bitte direkt an unseren Kundenservice.
Jetzt Kontakt aufnehmen
Bei Serviceanliegen wenden Sie sich bitte direkt an unseren Kundenservice.
Jetzt Kontakt aufnehmen
Wärmepumpe im Komplettpaket
Written by the company
- inkl. Fördermittelservice & Festpreisgarantie
Contact info
Prinzenstraße 34, 10969, Berlin, Germany
- +49 (0) 800 4 200 300
- www.thermondo.de
4.3
Excellent
15K reviews
At Trustpilot, it's all about human content. This business can also access our AI-assisted response tool which helps them draft replies.
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Invited
100% Zufriedene
100% Zufriedene. Everything was excellent!
Perfect, orderly, friendly, and clean worker.
19 August 2025
Reply from thermondo
Dear thermondo Customer,
thank you very much for your wonderful feedback! We are delighted to hear that you are completely satisfied with our service.
Kind regards,
Your thermondo Team
Service non existiend!
Service non existiend!
I have an automated bank transfer to pay the monthly payments for our heating system. Unfortunately Thermondo is not able to route an incoming payment to the correct customer contract and sends out warnings and delay threats via E-Mail, although everything was paid already two months upfront!
1 August 2025
Unprompted review
Reply from thermondo
Sehr geehrter Kunde,
wir bedauern sehr, dass Sie mit Ihrer Erfahrung bei uns unzufrieden
sind. Ihre Rückmeldung zeigt uns, dass etwas nicht so gelaufen ist,
wie Sie es sich gewünscht haben – und das nehmen wir ernst.
Wir sehen Sie mit dem, was Sie bewegt, und wir verstehen, dass
Unzufriedenheit oft mit Enttäuschung einhergeht.
Bitte seien Sie versichert: Wir haben Ihre Bewertung zur Kenntnis
genommen und beschäftigen uns damit.
Mit freundlichen Grüßen
Ihr thermondo-Team
Non-existent customer service
The customer service might very well be non-existent. Contact is only possible via a web-form, no hotline etc.. You get an automated confirmation that your issue will be processed "as soon as possible" but that is it. Over two weeks and three service tickets later I still have no reply. I was asked to pay part of the bill in the advance, and - despite having done that over a week ago - just got a "reminder" that I need to pay the bill. Avoid.
4 June 2025
Unprompted review
Reply from thermondo
Dear Mr. Hekel,
Thank you for your honest feedback. We sincerely regret the difficulties you have experienced with our customer service and that your concerns have not yet been adequately addressed. We take your criticism seriously and are working to improve our service processes.
Best regards,
Your thermondo Team
Extremely poor customer service
Extremely poor customer service.
heating system was repaired for parts replacement on 1st april 2025 and the system went down soon after the worker left. I booked an appointment for next day, and the appointment was confirmed. the visit was cancelled late afternoon. We are stuck in a cold house, all thanks to faulty repair and poor customer service. this is despite buying an yearly service contract with Vaillant. when I asked the customer service agent to cancel the contract for service, he said, what else do you want to cancel. pretty rude and uneducated staff
2 April 2025
Unprompted review
Reply from thermondo
Dear thermondo customer,
We are truly sorry to hear about the difficulties you've encountered with both the repair and customer service. Your experience does not meet the high standards we strive for, and we understand how frustrating this situation must be, especially given the cold and your expectations for timely support.
Please know that we take your concerns seriously. We will escalate this matter to the relevant team for a thorough review and ensure that necessary steps are taken to resolve this issue. We also apologize for the inappropriate response you received from our customer service team, which is certainly not the experience we want our customers to have.
We appreciate your patience and will be in touch as we work to resolve the issues you're facing.
Sincerely,
Your thermondo Team
Great job
quick, professional, very communicative and clean after the job
24 February 2025
Unprompted review
Reply from thermondo
Hallo lieber Herr Stuglik,
vielen Dank für Ihre Bewertung. Wir freuen uns, dass Sie mit unserer Leistung zufrieden sind!
Vielen Dank und viele Grüße,
Ihr thermondo-Team
Horrible Communication or zero communication
I wanted to have a heatpump through Thermondo because of the option of Buderus. I received my offer (with early construction discount promise). After I accepted my offer, sales representative sent me an email that they did something wrong in my home address (missing door number). Thats why they sent me another offer (that one I have not accepted yet)
.
In the new offer some of the prices were already changed and some discounts have been cancelled already. Also in the email I have been informed that the early consturction discount will not be valid anymore.
At the moment I am receiving emails to continue with the offer that I accepted (which is told that not valid anymore due to potential issues of the förderung/incentive) but I CAN NOT GET IN TOUCH with them. I have sent 5-6 email and 20 phone calls to sales person no response since beginning of December. (Please no one should complain about Christmas!).
Also can not create contact in the website because the contact form requires customer number and I am not a customer yet. In Germany, everyone is concerned about the goverment change and for almost 1 month I am trying to create a communication with them. I dont even know if I have to cancel my order confirmation which was told that there was a mistake.. So how can I trust such customer approach for a partnership for at least 20 years... Unacceptable! And their marketing phrase is the company who built the most heatpump but probably did not learn about the "quality" of communication.
22 December 2024
Unprompted review
Reply from thermondo
Dear thermondo customer,
We regret that you have experienced inconvenience.
We would like to get to the bottom of the matter, but we do not have your name, address or the relevant offer (offer number).
If you contact us using our service form (thermondo.de/service), we can record the information you need and examine the case in detail in order to hopefully find a suitable solution for you.
Thank you and best regards,
your thermondo-team
Great company and service.
Great company and service.
Always there in case of emergencies and provide good in depth knowledge and timely service.
12 November 2024
Unprompted review
Reply from thermondo
Dear thermondo-customer,
thank you for your positive feedback! We're pleased to hear that you're satisfied with our service and appreciate your trust in us during emergencies. We're dedicated to providing in-depth knowledge and timely service to meet your needs.
Best regards,
your thermondo-Team
Reply from thermondo
Hallo,
vielen Dank für Ihre sehr gute Bewertung!
Vielen Dank und viele Grüße,
Ihr thermondo-Team
The people from Thermondo were always friendly, professional, available and providing great support.
The people from Thermondo were always extremely helpful, professional and friendly in their work. All the people I spoke with during the process, from Sales to installation, provided tremendous support.
4 July 2024
Unprompted review
Reply from thermondo
Dear Mr. Hill,
thank you for your positive feedback. We are delighted to hear that you were satisfied with our service from sales to installation and that you found our staff to be helpful, professional, and friendly.
Your praise motivates us to continue providing our best service.
Best regards,
your thermondo-Team
The call goes to the Service Central…
The call goes to the Service Central station and the Central station tries to connect it to Service Technician team when I say it is urgent but most of the time it is not getting connected. The Service technicians should be available for the immediate information exchange.
15 April 2024
Unprompted review
Reply from thermondo
Dear thermondo customer,
Thank you for your feedback. We're sorry to hear that you had difficulty connecting with the service technician team, especially in urgent cases. We take your comments seriously and will ensure that our customer service team is more accessible to ensure prompt dissemination of information. Your satisfaction is important to us and we will do everything we can to improve our service.
If you have any further concerns or urgent information, please feel free to contact us directly.
Best regards,
Your thermondo team
Invited
sehr kompetenter Techniker
5 January 2024
Reply from thermondo
Hallo lieber Herr Sawatzki,
vielen Dank für Ihre Bewertung. Wir freuen uns, dass Sie mit unserer Leistung zufrieden sind!
Vielen Dank und viele Grüße,
Ihr thermondo-Team
Invited
Reliability and experience
This firm and its employees are probably one of the most reliable in Germany.
It's never too much trouble to explain what is going on with the equipment, and when a problem does arise it is speedily resolved.
6 December 2023
Reply from thermondo
Dear Mr. Aldridge,
thank you for your trust in us. We are pleased about your great review and look forward to continuing to work for you.
Thank you and best regards,
your thermondo-Team
Invited
Kompetenter und netter Techniker
13 November 2023
Reply from thermondo
Lieber Herr Saazer,
vielen Dank für Ihre tolle Bewertung. Sehr gerne geben wir Ihre wertschätzenden Worte an die Kollegen weiter, die für Sie im Einsatz waren.
Viele Grüße,
Ihr thermondo-Team
Invited
Super Service
7 November 2023
Reply from thermondo
Hallo lieber Herr Plank,
vielen Dank für Ihre Bewertung. Wir freuen uns, dass Sie mit unserer Leistung zufrieden sind!
Vielen Dank und viele Grüße,
Ihr thermondo-Team
Invited
Top Service!!!
5 July 2023
Reply from thermondo
Lieber Herr Rohan,
vielen Dank für Ihr positives Feedback! Es freut uns zu hören, dass Sie mit unserem Service zufrieden sind. Bei Thermondo legen wir großen Wert auf die Zufriedenheit unserer Kunden und bemühen uns stets, einen Top-Service zu bieten.
Wenn Sie weitere Fragen oder Anliegen haben, stehen wir Ihnen gerne zur Verfügung. Vielen Dank für Ihre Unterstützung und Ihr Vertrauen in thermondo.
Mit freundlichen Grüßen,
Ihr thermondo-Team
Reply from thermondo
Lieber Herr Stierheim,
vielen Dank für Ihre sehr gute Bewertung!
Mit den besten Grüßen und bleiben Sie gesund,
Ihr thermondo-Team
Reply from thermondo
Vielen Dank für Ihre sehr gute Bewertung!
Mit den besten Grüßen
Ihr thermondo-Team
Proud of their profession.
Proud of their profession. You can see it in their work/behavior.
11 January 2022
Unprompted review
Reply from thermondo
Thank you for your trust in us. We look forward to your great rating and look forward to continuing to work for you.
With best regards,
Your Thermondo team
Reply from thermondo
Thanks for your feedback and the very good rating.
All the best,
Your Thermondo-Team
Toll!
Das Team hat einen tollen Job gemacht und wir sind sehr zufrieden mit unserer neuen Heizung!
10 September 2021
Unprompted review
Reply from thermondo
Hallo lieber Herr Ionescu,
Vielen Dank für Ihre sehr gute Bewertung!
Mit den besten Grüßen und bleiben Sie gesund,
Ihr Thermondo-Team
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.
Learn more about other kinds of reviews.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.