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Larson80017 Sep 2010 14:31Hello everyone,
I am currently planning a house. Of course, heating technology is an important topic.
Every provider claims that their system is the best.
So far, all offers have included underfloor heating combined with a forced-air system.
Now there is an offer that only includes a forced-air system (without underfloor heating).
This is called comfort heating technology. The used air from the kitchen and bathroom is extracted, and the fresh air drawn in from outside is heated by the extracted air.
The system also has a heat recovery feature, which I can use to heat my domestic hot water.
My question: Has anyone had experience with this type of technology, and is it sufficient, or should underfloor heating definitely still be installed?!?
There are no other radiators except for a wood-burning stove in the living room.
Regards,
Lars
I am currently planning a house. Of course, heating technology is an important topic.
Every provider claims that their system is the best.
So far, all offers have included underfloor heating combined with a forced-air system.
Now there is an offer that only includes a forced-air system (without underfloor heating).
This is called comfort heating technology. The used air from the kitchen and bathroom is extracted, and the fresh air drawn in from outside is heated by the extracted air.
The system also has a heat recovery feature, which I can use to heat my domestic hot water.
My question: Has anyone had experience with this type of technology, and is it sufficient, or should underfloor heating definitely still be installed?!?
There are no other radiators except for a wood-burning stove in the living room.
Regards,
Lars
Hello,
That is natural. Everyone wants or has to sell!
A floor heating system has not only advantages but also disadvantages, as is the case with any type of heat emitter. Underfloor heating requires careful planning. I don’t believe in a forced-air system here; it is probably a mechanical ventilation system with heat recovery. That has nothing to do with forced air!
A nice name! In principle, every heating system should provide comfortable warmth—that is no special feature.
This is about an air heating system, where the required heat energy is supplied to the rooms through the supply air.
This solution might be interesting at best for nearly zero-energy houses. The decisive factor is the specific heating loads of the rooms! Air is a very poor “energy storage” or “carrier” due to its low specific heat capacity.
That is heat recovery.
If you want to recover energy, it first has to be generated! An energy balance clearly shows that very often there is a significant mismatch between effort and benefit.
Yes, I have already planned such systems. They are only suitable under very specific conditions.
Basically, every modern heating system requires precise calculations if you value an energy-efficient solution! And you should, since the investments can be considerable. These calculations should not be carried out by the seller or installer but by an independent planner.
Unfortunately, complaints from homeowners are increasing, especially with general contractor projects. The systems do provide warmth, but energy efficiency is often missing. The main causes are: no or inadequate heating load calculation/heating surface dimensioning; errors in hydraulics and thermal coordination of components; incorrect equipment selection; and more. Optimization generally does not take place. Mostly estimates, assumptions, and guesses are made.
Best regards.
Larson800 schrieb:
...Of course, every provider claims that their technology is the best.
That is natural. Everyone wants or has to sell!
Larson800 schrieb:
...So far, a floor heating system combined with a forced-air system was always included in the offers.
A floor heating system has not only advantages but also disadvantages, as is the case with any type of heat emitter. Underfloor heating requires careful planning. I don’t believe in a forced-air system here; it is probably a mechanical ventilation system with heat recovery. That has nothing to do with forced air!
Larson800 schrieb:
...Now there is an offer where only a forced-air system (without floor heating) is included. They call it feel-good heat technology.
A nice name! In principle, every heating system should provide comfortable warmth—that is no special feature.
This is about an air heating system, where the required heat energy is supplied to the rooms through the supply air.
This solution might be interesting at best for nearly zero-energy houses. The decisive factor is the specific heating loads of the rooms! Air is a very poor “energy storage” or “carrier” due to its low specific heat capacity.
Larson800 schrieb:
...The used air in the kitchen and bathroom is extracted, and the outside air drawn in is heated by the extracted air.
That is heat recovery.
Larson800 schrieb:
...The system also has a recovery that can heat my domestic hot water.
If you want to recover energy, it first has to be generated! An energy balance clearly shows that very often there is a significant mismatch between effort and benefit.
Larson800 schrieb:
...My question: Does anyone have experience with such a technology AND is it sufficient, or should a floor heating system definitely still be installed?!?
Yes, I have already planned such systems. They are only suitable under very specific conditions.
Basically, every modern heating system requires precise calculations if you value an energy-efficient solution! And you should, since the investments can be considerable. These calculations should not be carried out by the seller or installer but by an independent planner.
Unfortunately, complaints from homeowners are increasing, especially with general contractor projects. The systems do provide warmth, but energy efficiency is often missing. The main causes are: no or inadequate heating load calculation/heating surface dimensioning; errors in hydraulics and thermal coordination of components; incorrect equipment selection; and more. Optimization generally does not take place. Mostly estimates, assumptions, and guesses are made.
Best regards.
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