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5. Warm floors warm better.
There is no better or worse than radiators. But their heat distribution is better. (Warm bottom) Therefore, the temperature in the house can be kept 2-4 degrees lower than with radiators. And only for this reason they are more economical than radiators. 7-10%
6. Bad for the bedroom.
There is quite a funny speculation on the lack of radiator heating. Namely, it warms unevenly. And from this, it is concluded that in bed at radiator heating it will be normal, and at TP it is too hot. But in fact: The difference in bed height is only 0.5 g. Taking into account the fact that the total temperature at TP is usually required lower, the difference will not be at all, or it will be in favor of TP.
7. It is not necessary to do under furniture.
It is necessary, and the reasons here are two.
- The first one. Furniture can be moved over time. And then you have cold spots.
- The second, if you don't warm under the furniture, you can form cold zones where condensation can fall out. And this is a direct way to mold. Such a disadvantage as overheating inherent in electric warm floors, water is deprived of. Moreover, due to the worse heat transfer under the furniture, the temperature in the open places increases slightly, which in general almost compensates for the "lack". Approximately 5% of the heat loss on the furniture.
8. Warm floors are dusty.
This myth has no basis at all. But here we need a little more details.
What is the dust and where does it come from? The main source is the man himself, or rather the dead skin particles that are constantly peeling off, as well as fine dirt, dragged in with clothes and shoes. That is, the amount of dust does not depend on the heating at all. But its distribution is very even. Have you ever wondered where the dust on the cupboard comes from? You don't "litter" there, do you? The thin layer of dust on it is responsible for the convection of air. And one of its main sources is convectors/radiators. It looks like this somehow.
Strong heating leads to the fact that the air rises very quickly, actively mixing Anyone can evaluate the existence of the flow by bringing a sheet of paper from above to the convector. With warm floors, the situation is very cold and the flow is weak. The dust does not rise but just sits on the floor.
As a result: With convector/radiator heating. More dust in the air sits on all things. When heating the floor with warmth. Dust in the air is less. It sits mainly on the floor.
9. Floor pipes need to be laid at a pitch of 150 mm or better, 100 mm.
As it does not seem strange in the classic floors in the concrete screed depends on the step very little. The heat output of the floor at step 100-200 changes very slightly. What would explain this "phenomenon". It is necessary to understand how the heat spreads inside the floor.
Although the concrete is a bad conductor of heat, the heat transfer (conduction) in it is much more effective than the heat transfer from the floor surface (convection + radiation). This effect can be observed by everyone in a normal frying pan on a gas stove. The flame ring warms up from below. And the whole frying pan warms up. And the thicker the bottom, the more evenly.
10. Mounting on wood is impossible.
There are three methods of floor installation on wooden floors.
- Buckle. The best in terms of characteristics and price, but heavy +100 kg/m2 floor
- On the plates. Heat transfer is carried out at the expense of aluminum plates (basic rise in price) step of loops of 150 mm
- "Finnish" is the same as the 150 mm step
In the Finnish version. Concrete is replaced by a thin layer of 3 sheets of GPB. And the pipe is located inside 1-2 layers. Heat flow is much worse than that of concrete, so the step is 150 mm. It is also very desirable to increase the flow through the pipes. Up to dt=5 g. Instead of dt=10 in the usual case.
11. only a specialist will do this for warm floors.
On the one hand, yes, it is necessary to calculate and set up everything correctly... it is really difficult. On the other hand, if you do all the contours not more than 80 meters and not less than 30 meters. That independent balancing does not represent the big problems.
12. The floors are unreliable.
Perhaps, the strangest and rare mistake. Since there is nothing to break in the floors at all, it is the easiest and most reliable heater. Just a piece of pipe. Due to the fact that the pressure in the system does not exceed a couple of atmospheres, and the temperature is within 45 grams. The service life of such floors under 100 years.
Total:
Heating with warm floors is not universal, no. It has disadvantages. It is not suitable for dachas, and places with a non-permanent residence. It has difficulties with wooden overlapping and is not suitable for poorly insulated houses. It is not as clear as the classic...
But in general, heating with warm floors is much better than radiator heating in terms of comfort and cost of maintenance, as well as a little bit of fuel price. And it is the most optimal and reliable solution in most cases.
It is up to you to decide whether to do it or not.