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

Company details

  1. Heating Contractor

Written by the company

Intergas cv-ketels en (hybride) warmtepompen ✓ Incl. complete installatie, slimme thermostaat, onderhoud en 24/7 service ✓ Cv-ketel kopen vanaf €1625 ✓ Cv-ketel huren vanaf €32,- ✓ Landelijk netwerk van installateurs


Contact info

4.1

Great

TrustScore 4 out of 5

308 reviews

5-star
4-star
3-star
2-star
1-star

Replied to 100% of negative reviews

Typically replies within 2 weeks

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Pleasant and experienced company

I had a very pleasant experience selecting this local company. I asked chatgpt to select me the best ones in the local market and I ended up on their website. The selection of products was big and really well described. The order went smooth. After I placed my order the team reached out to me to select the date for instalation. Beforehand I send a pictures with current setup and we were asked if we agree to pay guaranteed additional money for extra installations. All was agreed and clear. Instalation was fast and service guys very pleasant. My experience was very good. I recommend this company.

3 November 2025
Unprompted review
Rated 5 out of 5 stars

Outstanding CV-Ketel Installation by Warmgarant

I’m very impressed with Warmgarant and their professional service. Mohammed installed a new CV-ketel for me in what turned out to be a very complicated situation due to the way my house is built. He handled the challenge brilliantly and delivered a clean, high-quality installation. I’m very happy with the result and will gladly recommend Warmgarant to friends who need a CV-ketel installation.

25 September 2025
Unprompted review
Rated 5 out of 5 stars

Smooth Installation!!

Smooth Installation!!

Right from the initial conversation, the process went smooth. Installation went as planned. Very happy with the work. I recommend warmgarant.

9 June 2024
Unprompted review
Rated 1 out of 5 stars

Unprofessional and Rude Service Provider

During my inquiries into the extensive requests for documentation, images, and certifications from Waramgarant team, I was met with a response that I found unacceptable: "This is our standard procedure, and if you're not satisfied, you're welcome to terminate the contract." Such dismissive treatment of a new client seeking clarification on the reasons behind the excessive requests raises serious concerns about Waramgarant's commitment to customer satisfaction.

The evident lack of professionalism and the level of rudeness displayed do little to inspire trust in this company. Shame on them!

16 February 2024
Unprompted review
Warmgarant logo

Reply from Warmgarant

Beste heer Frederic, Bedankt voor uw review. U heeft een aanvraag gedaan voor een all-inclusive servicecontract op uw huidige cv-ketel. Omdat wij de cv-ketel niet zelf hebben geïnstalleerd is voor ons wel belangrijk om onszelf ervan te verwittigen dat de cv-ketel volgens de voorschriften van de fabrikant is geïnstalleerd. Daarom hebben wij bij u foto's van de cv-ketel en informatie over het rookgaskanaal opgevraagd. Wij vinden het vervelend dat hierover discussie is ontstaan maar helaas kunnen wij niks veranderen aan deze situatie. Wij wensen u alle goeds bij een ander bedrijf.

Show reviews in all languages. (308 reviews)

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.

Take a closer look