Heattransformers Reviews 373

TrustScore 4 out of 5

3.9

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Company details

  1. Heating Contractor
  2. Furnace Repair Service
  3. Heating Equipment Supplier
  4. Boiler and Heating Service

Written by the company

Wij zijn in 2018 begonnen om Nederland gasvrijer te maken door het installeren van warmtepompen. Inmiddels zijn we alweer duizenden installaties verder en is de urgentie van onze missie alleen maar groter geworden. In deze stroomversnelling kunnen we zeker meer hulp gebruiken en daar hebben wij jou voor nodig. Bij HeatTransformers doen we het hele proces van interesse tot installatie wel net even anders. We zetten volop in op de digitalisering van het proces en op het slim gebruik maken van data (bijvoorbeeld van eerdere installaties). Hierdoor kunnen we het proces efficiënter en beter maken. Zo helpen we sneller meer mensen om gasvrijer te verwarmen.


Contact info

3.9

Great

TrustScore 4 out of 5

373 reviews

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

Replied to 86% of negative reviews

Typically replies within 2 weeks

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Rated 1 out of 5 stars

cherry picking

This company sold a service for a hybrid installation but after a year decided that they 'cannot provide service' for a Remeha CV ketel, with unclear reasons. Looks like cherry picking so they only sell expensive service subscription for new warmtepomp. Very disappointing. Filed an official complaint at Vereniging Eigen Huis. Stay away with Heat Transformers in Woerden.

February 16, 2026
Unprompted review
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Reply from Heattransformers

Dear Hans,

Thank you for your review. We’re sorry to hear that this situation has led to disappointment.

To clarify, we only provide maintenance services for heat pumps and boilers that have been installed by HeatTransformers. In your case, we did specifically look into whether we could make an exception, as we fully understand the need for service.

However, due to the specific technical specifications of the boiler, we were unfortunately not able to meet your request. Not every boiler can simply be serviced within our service structure and responsibilities.

We regret that this has caused frustration and understand that this is not the outcome you were hoping for.

"Warme groet"
Team HeatTransformers

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Rated 5 out of 5 stars

Jeriel is an amazing person.when ever…

Jeriel is an amazing person.when ever we call,he attends call and he is always helpful.he answers your queries and gives best suggestions.just go with heat transformers to have cv boiler and heat pump

January 14, 2026
Unprompted review
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Reply from Heattransformers

Hi Radha Krishna,

We’re really happy to hear that Jeriel has been so helpful and always there to answer your questions.
It’s great to know his advice and suggestions made a difference for you.
Thanks for the recommendation we truly appreciate your trust in HeatTransformers!

"Met warme groet,"
Team HeatTransformers

Rated 5 out of 5 stars

Good company

I would give myself a 3 start rate as a client, but Victor was really patient explaining me everything and thought multiple rounds of messages. Installation went smoothly

November 4, 2025
Unprompted review
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Reply from Heattransformers

Dear Maria,

Thank you for your kind feedback! It’s great to hear that, despite some initial challenges, Victor took the time to patiently explain everything and guide you through the process.

We’ll made sure Victor heard about your appreciation.
Victor indicated that a three-star rating would be too low for you as a customer. He actually found the contact positively challenging.

We wish you a lot of gas savings,
Team HeatTransformers

Rated 4 out of 5 stars

The design proces and scope preparation…

The design proces and scope preparation went fine. Installation and start up were fine. Some alarms on gas heater not solved.

March 6, 2025
Unprompted review
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Reply from Heattransformers

Dear Don,

It sounds like the overall process went smoothly, but the unresolved gas heater alarms are still a concern. Have you been able to get further support on that issue?

We wish you gas savings with your new heat pump!
Team HeatTransformers

Rated 4 out of 5 stars

Warm feeling after a cold first weekend

End of December we accepted the offer by Heattransformers to install on the roof of our garage a heatpump. For climatological and financial reasons. The Dutch Consumentenbond had recommended the heattransformers. Our pump was to be a hybrid one, as we had a relatively new gas based central heating boiler.The work started on a cold Thursday, was ‘ready’ the same day, but…pump and cv refused to “cooperate”. On Friday came the explanation: the pump of the boiler was defective. As the reason for this dysfunction was not clear, the bill for the urgent replacement of the pump, was deposited on our desk. After long and several telephone conversations, this was felt to be not right. A cold weekend followed, with only the heatpump at work and freezing temperatures outside. On Monday the defective pump was replaced and an additional gearbox (keerkoppeling), was installed. That resulted in warm feelings ever since.

February 13, 2025
Unprompted review
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Reply from Heattransformers

Dear Jaap,

it’s good to hear that, in the end, the system is working well and keeping your home warm. Hopefully, your experience with the heat pump remains positive moving forward!

We wish you alot of gas savings,
Team HeatTransformers

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Rated 2 out of 5 stars

Stay away from HeatTransformers!

**Initial Impressions**
They look very nice before you sign the quote (+1 star for this). But then everything changes, and it's you who should follow up on every detail and fix errors if you are lucky enough to spot them.

**Boiler Installation**
I have a new Remeha boiler and Vaillant Heat Pump installed by them. The good part was that they installed the boiler very quickly (I just moved to my new house and the old boiler suddenly stopped working. +1 star for this).

**Heat Pump Installation**
My experience went well until the first installation attempt for the heat pump. The installer, who was a skilled freelancer came on time, but HeatTransformers forgot to schedule the drilling company! The installation was cancelled and the poor guy had to pack everything!!!
The heat pump was installed on the second attempt one month later.

**Customer Service**
During the heat pump installation, I accidentally found out that I needed a CO approval certificate for my boiler. The funny part was that the guy didn't know that they had installed the boiler and that it was their duty to do this. I'm still waiting for the certificate after nearly 3 months of the boiler installation!
Surprisingly, a few days ago, they sent an invoice for an incomplete job and wanted me to pay for it! Since then, I've tried email, phone, and WhatsApp to find someone to talk to about my issues, but I haven't been successful.

**Planning**
When I asked them to give me a document for the heat loss calculation, planning, and installation report calculations, they again left me in the dark!

**Suggestions to HeatTransformers**
Do an overhaul of your customer service
Do some training to gain more knowledge - Heat Geak is a very good starting point!

January 23, 2025
Unprompted review
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Reply from Heattransformers

Dear Mostafa Zare,

Thank you for your extended review.

We have done our best to help you as quickly as possible when your boiler suddenly broke down. We have now placed the sticker that was forgotten after the inspection.

We have thereforewe have also been extra lenient regarding the due date of the invoice.

We trust that we have been able to positively change your opinion!

We wish you a lot of gas savings,
Team HeatTransformers

Rated 5 out of 5 stars

Good service and support

I decided not to go for a heatpump yet due to prioritisation of other energytransition related choices. However the HT quote on an Intergas Extend HP was very competitive and good. Good support and conversation with Heattransformers on my choice ultimately (thanks Nouh !) and will come back to them for sure when moment is there to install a HP.

October 25, 2024
Unprompted review
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Reply from Heattransformers

Dear Roger,

Thank you very much for your kind feedback.
We're pleased to hear that you found our quote for the heatpump competitive and our support helpful.
We’re glad that Nouh could provide the assistance you needed.

When the time is right to move forward with a heat pump, we’ll be here to support you every step of the way. Thanks again for considering us, and we look forward to working with you in the future.

Warm greetings,
Team HeatTransformers

Rated 5 out of 5 stars

Good advice and installation service

February 28, 2024
Unprompted review
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Reply from Heattransformers

Dear Udy,

Thank you for your review.

We are delighted to hear that you found our advice and installation service excellent.

We wish you a lot of savings with your new installation.
With warm regards,
Team HeatTransformers

Rated 4 out of 5 stars

Heatpump installation

Update: HeatTransformers was able to get the heatpump working correctly and they were able to resolve all the issues, currently I am satisfied with the installation but I give 4 stars because it took 5 months to actually fix those issues. The heat pump is Intergas Xtend which was a new model and naturally had some early model problems

Original Review:
Please stay as far away as possible from this company, they installed an Intergas Xtend heat pump along with a new boiler on October 23rd for my house, and everyday since I regret my decision to go with HeatTransformers.
First of all, the installers told me they were freelancers and that they don't work directly for HeatTransformers, they also mentioned that this model (Intergas Xtend) is their first time installing it so zero experience with this specific model. At the end of the day they couldn't get the heat pump to work and they left (not even the thermostat was working)
in the following 3 days, due to incorrect installation, the heatpump concumed 73 kWh of energy!!! The problem is that they did not even call me or follow up because of the incorrect installation, I had to follow up every day on the phone with them. Now after two weeks and days of headache they finally sent an engineer from Intergas to fix the heat pump and the thermostat, now it seems to be working but the boiler pressure drops under 1 bar each night, they don't even come to check and confirm that everything is setup and working correctly, I have to follow up every day... this is the worst service I've seen in years, unbelievable!!!

November 10, 2023
Unprompted review
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Reply from Heattransformers


Dear Mohammad,

Sorry to hear that you are not satisfied with the installation.
We had the manufacturer come by and send you instructions to carry out. There was also another contact moment this morning during which these were passed on.

If you believe that it has not yet been resolved properly, we would like to hear from you by telephone. Please contact our customer service.

With warm regards,
Team HeatTransformers

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