Alpha Ventilatie Reviews 506

TrustScore 4 out of 5

4.2

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Rated 4 out of 5 stars

The communication and customer experience with the office and the inspection was excellent, however, there is some miscommunication with regards to expectations between the office and the workers who... See more

Rated 5 out of 5 stars

What a charming, proficient and professional man from Alpha Ventilatie! Mr. Nouaman patiently explained the whole system to me, and pointed out quite clearly what all would need to be cleaned... See more

Rated 5 out of 5 stars

The installers were friendly and very informative. They cleaned up the space, inside our zolder, where the ventilation system was installed. They communicated well. Installation looks great, very nea... See more

Rated 5 out of 5 stars

It was very easy to make a "clear" appointment (without any surprises) with the very kind professionals. Richano was right on time, very cooperative, professional and helpful with his advices and main... See more

Company details

  1. HVAC Contractor

Written by the company

Alpha Ventilatie is dé ventilatiespecialist van Nederland. Met onze experts, die al jarenlang ervaring hebben in het vak, zorgen we ervoor dat uw ventilatiesysteem – waar dan ook in Nederland – weer perfect functioneert. Van installatie, onderhoud en inregelen tot aanleg: wij bieden een totaaloplossing voor uw ventilatiebehoeften. Onze engineers werken iedere dag met trots, passie en energie aan innovatieve en duurzame oplossingen. Wij blijven voortdurend groeien, inspelen op marktontwikkelingen en innovatieve oplossingen ontwikkelen, zowel voor nu als voor de volgende generatie. Om dit te waarborgen, werken wij volgens onze drie belangrijkste pijlers: snelle service, vakmanschap en kwaliteit.


Contact info

4.2

Great

TrustScore 4 out of 5

506 reviews

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Replied to 48% of negative reviews

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Rated 4 out of 5 stars

miscommunication between office and execution

The communication and customer experience with the office and the inspection was excellent, however, there is some miscommunication with regards to expectations between the office and the workers who actually install the equipment and pipes. The hole on the roof was placed a bit further then I would have liked (wrong location for the solar panels that are coming later), and they claimed to be unable to create a proper widening of the existing gaps between the floors. They installed 12,5 cm pipe instead of 16cm just because of space constraints, instead of fixing/creating sufficient hole in the beton. If I do not notice that this is NOT according to the agreed specification, they would have been good to go. Now they ask me to solve the beton issue, instead of them figuring it out, as agreed. I did not sign up for additional costs related to beton construction works. This is after 2 days of the install, there is one more day to finish the work, so we will see what happens next... The installation guys are otherwise friendly and I'm glad they speak English to discuss the details.

April 17, 2026
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Rated 1 out of 5 stars

Extremely unprofessional

Extremely unprofessional and deeply concerning experience. This company requests sensitive personal information and then completely disappears — no replies to emails, no answering calls, no acknowledgment whatsoever.

February 1, 2026
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Rated 5 out of 5 stars

The installers were friendly and very…

The installers were friendly and very informative. They cleaned up the space, inside our zolder, where the ventilation system was installed. They communicated well. Installation looks great, very neat and practical.
Also we appreciated the advice given on an extra wireless remote and the settings.

December 16, 2025
Unprompted review
Rated 5 out of 5 stars

Very nice mechanic

Very nice mechanic, knowledgable, willing to work with the situation, delivered a good job installing the new unit.

November 21, 2025
Unprompted review
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Reply from Alpha Ventilatie

Thank you for sharing your experience. We’re delighted to hear that our mechanic made such a positive impression — both through his expertise and his willingness to adapt to the situation. It’s wonderful that the installation of your new unit was completed to your satisfaction.
Your feedback is greatly appreciated, and we look forward to assisting you again in the future.

Rated 5 out of 5 stars

Really quick response

Really quick response, excellent work. Very friendly and polite staff.

November 21, 2025
Unprompted review
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Reply from Alpha Ventilatie

Thank you for your kind words! We’re glad to hear you experienced a quick response, excellent work, and friendly, polite service from our team.
We appreciate your feedback and hope to see you again!

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Rated 4 out of 5 stars

Did a good job I suppose, expensive.

Did a good job, a suppose.
Answered my questions.
They forgot to put the drain hose back.
Agreement was in 2 hours work.
2 men were ready in 30 minutes, needed to pay 200 euro’s.

November 18, 2025
Unprompted review
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Reply from Alpha Ventilatie

Thank you for taking the time to share your experience. We’re pleased to read that the work itself was done well and that our technicians answered your questions. However, we sincerely apologize for the inconvenience caused by the drain hose not being placed back properly. We hope to welcome you again in the future!

Rated 1 out of 5 stars

Faulty ventilation

A few months after the brand new ventilation was installed, it stopped working completely.
After calling them, the soonest date they could come is in 3 weeks time and that's at my own expense (120EU per visit).
It's both expensive and slow, the warranty they give doesn't cover their own work.
I probably need to involve my legal insurance to verify if this is legal.

August 22, 2025
Unprompted review
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Reply from Alpha Ventilatie

Thank you for sharing your feedback. We are sorry to hear about your experience.

To clarify: if an issue is covered under warranty, the visit is of course included and not charged to you. If the problem falls outside of warranty, then a service fee applies. At the time of your call, the earliest available appointment was indeed three weeks later due to our existing planning, but we do our best to help our customers as quickly as possible.

We understand your frustration and will continue to look for ways to improve both our scheduling and communication.

Rated 1 out of 5 stars

Very bad service

Very bad service. I will never recommend it.
They left a huge amount of dirt from the pipes all around the house when they left.
In comparison to other companies they are more expensive.

June 21, 2024
Unprompted review
Rated 1 out of 5 stars

Very unreliable customer service by Alpha

Alpha Ventilatie does not have a realiable customer support services.

Because of a mistake of their customer service team, they first scheduled my appointment on a different day and then even wanted to change it. They provided me no other options apart from the day and time slot they chose.

Now, I need to find a new ventilation company to get my job done on a shorter notice given my schedule with other renovation work.

August 5, 2024
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Rated 1 out of 5 stars

Customerservice is terrible

They performed maintenance om my Zehnder E400 WTW-unit (excellent job btw) but it also needed a software update (which is free from Zehnder due to a production error). They wanted to charge me 350 euros upfront(!) for "possible problems". Worst possible customer service ever! If problems occur we can make arrangements to pay for additional labour and/or parts, not upfront.

June 27, 2024
Unprompted review
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Reply from Alpha Ventilatie

Thank you for sharing your experience with us. We're pleased to hear that you found our maintenance of your Zehnder E400 WTW-unit to be excellent.

Regarding the software update, we apologize for any misunderstanding regarding the upfront charge of 350 euros. Our intention was to ensure a smooth service experience by preparing for any potential issues that might arise during the update process. However, we understand your concern and agree that charging upfront for potential problems is not standard practice.

Moving forward, we will review our policies to ensure clarity and transparency in our service offerings. Please rest assured that if the upfront charge of 350 euros is not necessary, you will receive a full refund.

Please accept our apologies for any inconvenience caused. If you have any further questions or would like to discuss this matter further, please feel free to contact us at support@alphaventilatie.nl or by phone.

Thank you for bringing this to our attention and for giving us the opportunity to improve our service.

Rated 1 out of 5 stars

Bad customer service

They installed a ventilation system for 650 euros at my house just for it to leak 2 days later when it rains. They called me back 2 days after I messaged them to say they cant do something about it and its all coincidence and i should check the roof instead.
I asked for a refund and they said no because 'it works properly they have the report'. Say that to my water covered attic. I'm sure its coincidence.

June 12, 2024
Unprompted review
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Reply from Alpha Ventilatie

Thank you for bringing this issue to our attention. We are sorry to hear about your experience with the ventilation system we installed at your house.

First and foremost, we want to clarify that we are not responsible for existing roof penetrations or any associated leaks. Our scope of work did not involve altering or servicing roof penetrations.

Regarding the leak issue you are experiencing, we understand your frustration. After reviewing our installation and the reported issue, we stand by our assessment that the ventilation system itself is functioning correctly, as indicated by the report. However, we recognize the inconvenience this has caused you and empathize with the situation.

We recommend that you consult with a professional roofer to inspect and address any potential issues with your roof that may be causing the leak. Ensuring the integrity of the roof is crucial in preventing water ingress.

We apologize for any confusion or frustration caused during our communication with you. Please know that we value your feedback and will use it to improve our services going forward.

If you have any further questions or would like to discuss this matter in more detail, please do not hesitate to contact us at support@alphaventilatie.nl or by phone.

Thank you for your understanding.

Best regards,

Rated 5 out of 5 stars

Fast delivery and a competent, friendly technician.

Fast delivery, competent technician. Also, my space was too small so they provided a smaller box on the spot and made it work the same day. I was properly instructed on how to use the ventilation and about the airflow in my home. I have no complaints so far.

April 8, 2024
Unprompted review
Rated 5 out of 5 stars

Good experience & Friendly Staff

The technician did a great job at installing the new ventilation unit, and left everything tidy.
He also explained to us how the new remote controller works and helped us to get our old unit recycled.
Overall it was a good and hassle free experience, and I would recommend it to anyone looking for a new ventilation system!

March 22, 2024
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Rated 3 out of 5 stars

Practical, but not thorough

Company was very fast to book an appointment and send a technician for the maintenance and cleaning. On the day of the appointment the tech showed on time and prepared.
Total visit lasted ~90 minutes with thorough cleaning of the main WTW machine and some of the vents.
On the negative side: the technician did not inspect or clean all of the vents in my house, most likely for lack of time. His explanation for why he did not need to look at all the vents was not convincing. Although he offered to answer any questions I had, he did not explain anything to me and the extent of the maintenance, any further steps or anythings else is left unknown.
Overall I would recommend the company for smaller issues, but I would not book the more comprehensive cleaning package again.

March 13, 2024
Unprompted review
Rated 5 out of 5 stars

Very professional service

Very professional service, highly recommended. The technician arrived on time with his equipment, worked fast and explained how the new ventilation works. Great job!

March 8, 2024
Unprompted review
Rated 5 out of 5 stars

It's very good interaction with the…

It's very good interaction with the Team since beginning starting from the advice till the installation of the Ventilation system .
Team is very friendly and installation went smooth

Very highly recommended

February 19, 2024
Unprompted review

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