ᐅ Controlled Residential Ventilation for Single-Family Homes – Planning and Design Using Helios Easyplan

Hello everyone,

I am currently planning the design of the mechanical ventilation system with heat recovery. Initially, I used Helios Easyplan for the layout and will make some adjustments. Now, I am trying to find out whether the suggested supply and exhaust air outlets are positioned correctly. These were chosen based on other houses from acquaintances with a similar floor plan.

We are planning a room-air-independent fireplace and an exhaust hood. A differential pressure switch might be needed here, but this still has to be clarified with the chimney sweep.

Key details:
-Single-family house with 175 sqm (1883 sq ft) of living space spread over 2 full floors
-Concrete ceiling on the ground floor and upper floor
-Air-to-air heat pump
-Ventilation unit located in the attic
-The ventilation system will most likely be a Helios mechanical ventilation system EC 300 with 75mm (3 inch) ventilation duct

My questions for you are:

1.) I might only install the ventilation ducts in the concrete ceiling on the ground floor and on the concrete ceiling of the upper floor with appropriate ceiling outlets. Since I am unsure if my budget will be sufficient, I want to prepare everything this way (only ventilation pipes and ceiling outlets, close off ducts in the attic, plaster over ceiling outlets) and then decide whether to complete the system later by installing the distributors, unit, and the rest. I don’t want to lose the option of a mechanical ventilation system in the future and hope to prepare everything with a relatively low budget for now.
The siphon, electrical supply, and empty conduit will also be prepared.

2.) Preparation aside, the openings for supply and exhaust air must be made ready. What do you think about these locations? The bedrooms are supposed to have both supply and exhaust lines to be able to increase airflow to about 60 m³/h (35 cfm) while keeping noise levels low.

I am happy to receive all kinds of suggestions, criticism, and tips and will consider them in my planning.
Attached are the floor plan with supply and exhaust air, and the Helios design.

Thanks in advance.

Best regards,
Almo

Looks good, although I would maybe space out the valves in the dining room and kitchen a bit more. That means aligning the dining room valves with the living room and positioning the kitchen valves as far right as possible.

Upstairs, you might consider adding one exhaust vent in the dressing room.

Mycraft schrieb:
Looks good, but I would suggest spacing the vents in the dining room and kitchen a bit more. That is, align the dining room vents with the living room, and place the kitchen vents as far to the right as possible.

Upstairs, you might also want to add an exhaust vent in the walk-in closet.

Okay, I will shift the dining room slightly to the left.
In the kitchen, I plan to lower the ceiling from the entrance area onward because I’m undecided about the lighting there. I need to figure out how to handle the ceiling outlet.
Does anyone have any suggestions?

Best regards,
Almo

I would also install exhaust air in the dressing room on the upper floor. At least, that was the plan in our case.

Eldea schrieb:
I would also install exhaust ventilation in the walk-in closet on the upper floor. At least, that's how it was planned in our case.

Thanks for your input. I will include that in the plan!

Best regards
Almo

Almo85 schrieb:
I need to figure out how to handle the ceiling outlet here.
Any ideas?

What is unclear? Simply extend the ceiling outlet up to the suspended ceiling. That way, you have quite a bit of flexibility in deciding where to place it.