Still considering gas heating for the new building?

  • Erstellt am 2017-06-04 15:52:18

R.Hotzenplotz

2017-06-05 07:43:12
  • #1


From my side, that was merely an observation that I never reach 17° in the bedroom even without heating. It was not a judgment. Although I like to sleep cooler than at 21°, that would not be a reason for radiators. Especially since that would be nonsense, as even the underfloor heating is simply off.

When I criticized the sluggishness of the underfloor heating, it was not about this 17° matter but about the general situation. Larger temperature changes outside are poorly compensated. We actually aim for 21° indoors here. Normally that works fine. But when it suddenly gets significantly warmer, the underfloor heating compensates very slowly. The next day we then sometimes have 23.5° inside, which only regulates back two days after the temperature change. If there is then a temperature drop, adjustment is somewhat faster but still takes a whole day. That’s what I mean by sluggish. Not the back and forth jumping between 17 and 24(?) degrees. We don’t need something like that.



The controlled residential ventilation is also set for us. Great.



Too late. The architectural planning is already underway and we are waiting for the demolition permit for the old property. But that would not be an option anyway. We want it customized; no existing property fits that – and an affordable one even less so. But in principle, we will come to terms with an underfloor heating system. Only we will have good advice so that we don’t install a sluggish thing like we have here. We actually want something connected with smart home. Each room will have a thermostat where we can set the desired temperature. The heating will regulate it independently. There are rotary control thermostats here as well, but they don’t work at all and the temperature values shown on them analogously simply don’t match. We want something that is all neatly electronically controlled.
 

Joedreck

2017-06-05 08:14:29
  • #2
So, to understand a well-functioning heating system: By now, both the central heating and the underfloor heating should be designed to run continuously 24/7. The underfloor heating is designed and hydraulically balanced room by room according to the heating demand. This way, the central heating is set so that the desired temperature is constantly maintained in the room. Individual room control thus becomes unnecessary. The inertia is also intentional because it allows operation with a low supply temperature, which is very efficient and energy-saving. Errors regarding high energy consumption arise from poor planning. What you are now aiming for with smart home etc. is always often advertised but very difficult to implement. However, you could, for example, use underfloor heating for basic tempering and possibly install a wall or ceiling heating system in addition. This might respond faster.
 

R.Hotzenplotz

2017-06-05 08:21:43
  • #3
So is it actually normal to have 23.5° for a whole day instead of the desired 21° during strong temperature increases? Then suddenly you are sitting here in the apartment in a T-shirt.

Additional elements will definitely be too expensive for us. Besides, the heating up is still bearable; we are more bothered by the opposite effect when it gets above 21° inside. We don’t like that.

We would prefer to have an air conditioner, but that is probably something that, on the one hand, is expensive to maintain and, on the other hand, only manageable with high investments in a 220m² house. On the other hand, I have heard that there are also heaters (heat pumps) that have an integrated cooling function. But I dare to doubt that it is the same as an air conditioner.

You write that individual room control is unnecessary. Can you explain that in more detail? Our house with the rental apartment is only a few years old, but here every room has a thermostat controller where you can adjust room by room. Is that outdated? In the scenario you outlined, do you only have thermostats but no controllers in the rooms anymore? Or not even thermostats? So you can design the underfloor heating so that you want 23° in the bathroom, 18° in the bedroom, 21° in the other rooms, and 20° in the kitchen? That would be very bad for resale, as it is a very individual thing.
 

Nordlys

2017-06-05 09:48:07
  • #4
I am reading all of this here with great interest because we will soon have the first underfloor heating of our lives. Until now, we have always had radiators with Danfoss thermostats and turned them to three at noon, to one when going to bed, bedroom on star, and it was never stuffy or too warm. We'll see... hopefully I won't regret the underfloor heating. Karsten
 

Sascha_aus_H

2017-06-05 11:23:40
  • #5
I don't understand your problem with the sluggishness nor why you are getting 23.5°. A floor heating system should have a delay of max. 3-4 hours, but then work well. That means immediate rapid heating is difficult because the floor heating only reaches the desired temperature 3-4 hours later, and additionally, the flow temperature is low and thus heats up slowly. But especially when "overheating" is happening, it is quite relaxed. The heating system detects high temperatures outside and therefore switches off the indoor rooms early. This can be done with smart home components like KNX or Homematic, but any reasonable heating system can already be programmed that way. Anyone who has the mentioned problems with their floor heating either has a wrongly planned/dimensioned floor heating system or it was set up incorrectly.
 

RobsonMKK

2017-06-05 11:29:19
  • #6
At what temperatures does your heating run so that the room can warm up by 2.5 degrees???
 

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