ᐅ Mechanical Ventilation with Heat Recovery (MVHR) by Helios – Is Installation According to Manufacturer’s Instructions Sufficient?

Good evening,

we need to place an order for a mechanical ventilation system with heat recovery on short notice. Currently, we are considering a HOVAL HomeVent FR (300) from supplier Z and a Helios EC 500 W R.

The Helios EC 500 W R is priced at a gross EUR 12,575.00 minus discount, with an estimated final price of about EUR 11,500.

The Hoval HomeVent FR (300) is priced at EUR 15,670.00 minus discount, with an estimated final gross price of about EUR 14,200.

The Helios seller prepared the offer based on Helios company specifications. I am not yet sure how many reference installations they have completed and will inquire about this. The Hoval seller based their offer on many years of experience in ventilation system installation.

In my opinion, the Helios 500 is more powerful than the offered Hoval 300. It is questionable whether the demand and design calculation based on Helios factory data is sufficient. The Hoval seller stated that the manufacturer’s data is not sufficient and that their planning is perfect.

What are your experiences? How many installations should the Helios seller be able to demonstrate as expertise to ensure that the system will be installed and function smoothly and safely?

Thank you in advance.

Best regards,

merlin83

First, you should determine the size needed for your house. The systems have completely different capacities... Of course, having some reserve is great to prevent the system from constantly running at full load, but an oversized system doesn’t help anyone either.

Which system I need must be determined by the ventilation system installer. The house is approximately 260 sqm (2800 sq ft), occupied by 4 to 5 people, spread over the basement, ground floor, and upper floor of a pitched roof house.

The Helios supplier has not installed these systems before but receives the planning directly from Helios, and the installation and adjustment are supervised. Otherwise, the installer works carefully and diligently.

OK, at that size you can rule out the Hoval... it is too small...

merlin83 schrieb:

So far, the Helios supplier hasn’t installed any, but they receive the plans directly from Helios, and the installation and settings are supervised. Otherwise, the technician works carefully and conscientiously.

Hello

Those are certainly not the worst arguments in favor of this supplier.

Olli

Installing the controlled residential ventilation system yourself is fairly straightforward (placing it, connecting the ducts); as long as the contractor is familiar with the ductwork, valve installation, and airflow calculation (which is basically independent of the manufacturer), the choice of the device’s brand is flexible. It is important that the system delivers enough air at the calculated pressure difference of the ductwork.

I have a Helios system and am very satisfied with the control (web-based, connected to the home network), which allows for very individual settings and even lets you quickly increase ventilation from a smartphone, for example. I would also recommend using an enthalpy heat exchanger to avoid overly dry air. We have one like that, and the air quality is good; if it were any drier, it would be too dry during winter.