To sell second-hand houses and maintain indoor air circulation, we should grasp three points:
First, take a deep breath:
Update indoor air. Ventilation modes can be divided into natural ventilation and mechanical ventilation. Generally speaking, the design concept of residential buildings mostly adopts natural ventilation, supplemented by mechanical reinforcement of local ventilation, while closed office space adopts mechanical ventilation.
Second, the ventilation:
Use airflow (such as wind, buoyancy or mechanical force) to update indoor air. On windy days, indoor air can flow, bring out bad air and maintain air quality. Ventilation can save energy, but the disadvantage is that the ventilation volume is unstable and easily affected by outdoor temperature and humidity and carbon dioxide concentration, so natural ventilation often needs to consider outdoor air quality.
Third, air tightness:
Airtight isolation of airflow is mainly to control the range of airflow. If the air tightness is not good, such as pipes, partitions, air holes on the side of pipes, airtight windows, etc. It will not only reduce the efficiency of air conditioning due to external leakage, but also make the odor in the building wander around indoors. However, some spaces (such as bathrooms and kitchens) need to be outdoors. If they are too closed, it will be more difficult to exhaust without considering the pressure balance of intake and exhaust, so it is advisable to reserve a crack under the door leaf.
How to choose a house with fresh air? It is suggested to cut in from four aspects: site selection, design, equipment and construction quality.
First, buy a house to see the location:
If you want to own a house with zero air pollution, you should first consider the "location" when buying a house and find a good environment with fresh air.
So, what should be the preferred environment? In fact, it is increasingly difficult to choose an ideal living environment for living in the city, so the first task is to avoid buildings located near or downwind of pollution sources. For example, the south wind and southwest wind blow in summer in Taiwan Province Province, and whether the south and southwest of the building are large parks or garbage incinerators will have a very different impact on the air quality at home.
Some people would rather sacrifice the convenience of commuting and choose suburban houses near green mountains and green spaces, but others choose to live in the bustling urban areas, and the latter have to settle for the second best, and see if there are trees and parks near the community, which will help purify the air.
As far as air quality is concerned, it is definitely the best choice to be close to parks or green spaces and rivers, followed by schools or squares, followed by roads with less traffic, followed by roads with large traffic, and the worst is chemical plants or nearby residential areas with pollution sources.
Second, buy a house to see the design:
The design scheme of the building will affect ventilation. It is suggested to observe from the following five points:
1. Look at the building configuration and distance.
2. Look at the building plan
3. Look at the building elevation.
4. Look at the indoor space plan
5. Look at the indoor air flow
Third, buy a house to see the equipment:
Because modern people are worried that the natural ventilation of mine windows is easily disturbed by outdoor noise, outdoor dust and rain, and it is difficult to guard against theft, buildings often use equipment (such as exhaust fans) to adjust indoor air quality. How to buy and install these equipment is not a small knowledge. Some devices are optional, and consumers can install them themselves according to the situation. For example, the balcony is equipped with ventilation, horizontal doors, total heat exchanger, bathroom inlet and outlet fans, etc. , can make up for the lack of natural ventilation.
Fourth, buy a house to see the airtight quality:
Air tightness between pipes: The criss-crossing pipes between pipes extend to all floors in all directions. It is not easy to ensure that the front, back, left, right and up are really airtight. However, the air tightness between pipes is related to the air quality at home, so consumers who buy houses must pay special attention when inspecting houses.
For example, each floor between pipes should be sealed to avoid vertical transmission of odor; It is best to exhaust the kitchen and bathroom on the first floor to avoid the lateral spread of odor.
The ceiling is actually a secret place. Remember to open the manhole of the ceiling of the kitchen and bathroom before handing over the house to see if the joint of the kitchen range hood, the exhaust equipment of the bathroom and the exhaust pipe is really fixed and closed. Is the exhaust pipe squashed, and is it really connected between pipes? Is the gap between the exhaust pipe and other pipes filled (opaque)? In addition, the residents on the top floor should pay attention to the fact that rainwater may invade the room from the open air inlet of the exhaust fan, so the drain head should keep the water leakage slope of1100.
Air tightness quality of partition wall: before handing over the house, please open the manhole in the ceiling of kitchen and bathroom to check whether the wall really reaches the ceiling so that the light can't pass through. If the partition wall is not tightly connected to the ceiling, the smoke from the range hood and the smell of the toilet will easily flow around.
Air tightness quality of drainage pipes: the drainage pipes under the sinks in kitchens and bathrooms are often the main source of odor at home, and the biggest problem lies in the air tightness quality of drainage pipes.
Pay attention to whether the drainage pipes in the kitchen and bathroom are really inserted into the PVC pipes reserved on the wall surface when handing over the house, and must be blocked with deodorant glue at the soft and hard joint, so as to truly complete the air tightness and prevent the odor from coming out.
The above is the knowledge about house preservation, hoping to help you better buy and sell second-hand houses and create the most comfortable living environment.
(The above answers were published on 20 16-08-04. Please refer to the actual situation for the current purchase policy. )
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