How to calculate square meters for floor heating? Comprehensive analysis of floor heating area calculation method
With the arrival of winter, floor heating has become the focus of attention for many families. How to accurately calculate the floor heating area is a key issue that must be understood before installation. This article will analyze in detail the calculation method of floor heating area and provide structured data for reference.
1. Core principles for calculating floor heating area

The calculation of floor heating area needs to follow the principle of "actual laying area" and usually does not include the following areas:
| Not included in area | Description |
|---|---|
| Under fixed furniture | Areas covered by large furniture such as wardrobes, beds, etc. |
| Bathroom dry area | Waterproof areas such as shower rooms and bathtubs |
| Kitchen stove area | Open flame operating area |
2. Calculation method of floor heating area for different room types
| Room type | Calculation formula | Example (100㎡ house) |
|---|---|---|
| Ordinary residence | Building area×0.7-0.75 | 100×0.7=70㎡ |
| Villa/duplex | Actual measured paved area | Requires on-site measurement |
| commercial space | Used area×0.85 | 100×0.85=85㎡ |
3. Key factors affecting floor heating area calculation
1.House insulation performance: Houses with good insulation can appropriately reduce the paving area
2.regional climate conditions: Northern areas usually require a larger paving ratio
3.Heat source type: The calculation methods of water floor heating and electric floor heating are slightly different.
| factors | water floor heating | Electric floor heating |
|---|---|---|
| Conventional laying ratio | 60%-75% | 50%-70% |
| Pipe spacing standard | 20-30cm | 10-20cm |
4. Professional measurement methods and precautions
1.field measurement method: Accurately measure every room using tools like a laser rangefinder
2.Drawing calculation method: Calculated based on building plan, wall thickness needs to be considered
3.Common misunderstandings:
| Misunderstanding | Correct approach |
|---|---|
| Calculated based on real estate certificate area | Excluding areas that cannot be paved such as public stalls and walls |
| Uniform proportion for all areas | Calculate different functional areas |
5. The relationship between floor heating area and cost
The total cost of the floor heating system is directly related to the laying area and mainly includes the following components:
| Project | Unit price range (yuan/㎡) | 70㎡ example (yuan) |
|---|---|---|
| Material fee | 80-150 | 5600-10500 |
| Labor cost | 30-60 | 2100-4200 |
| Auxiliary material fee | 20-40 | 1400-2800 |
6. Analysis of actual cases
Take a three-bedroom apartment with a construction area of 120 square meters as an example:
| area | Building area (㎡) | Actual paved area (㎡) |
|---|---|---|
| living room | 35 | 30 |
| Master bedroom | 20 | 18 |
| Second bedroom | 15 | 13 |
| total | 120 | 86 |
7. Professional advice
1. It is recommended to hire a professional floor heating company for on-site measurement and design
2. Consider the furniture layout in advance to avoid later changes that may affect the heating effect.
3. In the northern region, it is recommended that the paving ratio should not be less than 70%, and in the south, it can be appropriately lowered.
Through the above detailed analysis, I believe you have a comprehensive understanding of floor heating area calculation. Accurate calculation of the paved area can not only ensure the heating effect, but also reasonably control the installation budget.
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