ᐅ Is installing underfloor heating in the basement worthwhile?

Created on: 6 Oct 2021 08:10
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Pacc666
Hello

we are currently building a new semi-detached house

I am considering installing underfloor heating in the basement.

Our basement comes standard with conventional radiators under the stairs in the utility and storage rooms. As a special request, we will (red line) partition off this area as a separate room (of course with a door). The two lines at the back of the room will be ventilation slots to allow airflow since the other two rooms have windows.

The new room is intended as a pantry/storage room, and the storage room might be used as a workout room.

I have a few questions:

1: What do you think about installing underfloor heating throughout the entire basement? What are the advantages and disadvantages? The additional cost is 2700€.

2: In the underfloor heating package, the two rooms in the middle (hallway and newly partitioned room) will share a single heating circuit manifold, meaning the underfloor heating would be controlled by one thermostat and would heat both rooms. The underfloor heating would run beneath the new wall (a sand-lime brick wall).

My option would be, for an additional cost (amount unknown), to give the new room its own heating circuit, or to omit underfloor heating in that room altogether (which would of course reduce the extra cost of 2700€), or to have the hallway and new room share one heating circuit.

What would you recommend?

Floor plan of a building with entrance area, utility room, and storage space
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RotorMotor
12 Oct 2021 19:28
Basically, I think @Deliverer is right. However, he might be going a bit too far. Not everyone can or wants to get so deeply into the subject.

Especially in the basement, an ERR can make sense. There you can lower the settings or even turn it off completely if the rooms are not used for a longer period.
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Deliverer
12 Oct 2021 20:23
RotorMotor schrieb:

Not everyone can or wants to dive that deep into the topic.
Just spend two evenings using the search engine of your choice. You’ll find step-by-step guides within 10 minutes. But that wasn’t really what I wanted. I wanted to get the heating technician to do their job so that thousands of euros aren’t wasted... My suggestion was the minimal approach. But everyone has to decide that for themselves.
RotorMotor schrieb:

Especially in the basement, an ERR can make sense. You can turn things down a bit there...
There’s nothing wrong with setting the basement a few degrees lower. For that, you don’t need an ERR. Instead, the heating circuit is throttled by half a liter. You can just tell the heating technician that, so you don’t even have to turn the dial yourself.
RotorMotor schrieb:

... or even turn it off completely if the rooms are unused for a long time.
I believe we already discussed that at the beginning of the thread.
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Pacc666
14 Oct 2021 19:48
How do the individual room controllers actually work? Do the individual room controllers turn up to 100% until the target temperature is reached and then turn down to 0%?

Or do they regulate gradually in small steps?
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RotorMotor
14 Oct 2021 20:09
Normally the former.
So usually, thermoelectric actuators are operated in an open/close mode.
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Pacc666
9 Nov 2021 19:37
Hello, we have received the offer for our special requests.

The FHB states the following:

Underfloor heating instead of radiator heating in the basement. €2,960.00 (approx. $2,960.00)
 with thermostatic settings planned for cellar purposes;
 a heating load calculation is not included in this offer;
 positioning of the (enlarged) underfloor heating manifold;
 room thermostat control.

Can you help me again?
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Deliverer
9 Nov 2021 19:49
How can we help? Price estimate? I'm too lazy to check, but if there were radiators before, I find it quite expensive. The effort for radiators is not much less, and the material costs are even higher. But what can you do...
It would definitely be worth the extra cost for me. The additional floor space alone justifies it.