There are several environmental effects such as temperature, wind and noise that act on any structure of a building. These play a key role in the comfort of people staying in such buildings. The main and primary purpose of each structure is to provide a very comfortable and highly productive free place for the inhabitants and occupants. Air temperature plays an important role in people's comfort level, which has a major and direct effect on people's productivity. In the current economy characterized by high unit and essential costs, it is also very important to optimize and regularize energy efficiency and also reduce unit and utility costs such that organizations can perform the function within the predetermined assigned budgets. When people become dissatisfied with the thermal environment, not only is it a potential serious health hazard, but it also impacts people's ability to work effectively and their comfort at work. The environmental code BS EN ISO 7730 has a definition of thermal and environmental comfort as the condition of mind that expresses people's satisfaction with the thermo-environmental environment, i.e. the environmental condition in which people feel neither very hot nor very Freddo. The human thermal environment is not that simple and cannot be expressed numerically. It cannot be well defined by acceptable ambient temperature ranges and is a very personal experience that largely depends on numerous criteria and can be very different from person to person in the same place. It can be suggested that an environment can be said to achieve very reasonable comfort when at least 80-90% of the occupant population...... middle of paper......m introducing air fresh air in the rooms of the house.Balanced Systems:Balanced ventilation systems, if designed and installed correctly, neither pressurized nor depressurized in a house. They make the journey to enter and discharge almost equal amounts of fresh air from outside and polluted air inside. A balanced ventilation system always works within any home's HVAC ventilation system to ensure proper distribution of fresh air. In each room you can install fresh air supply, ventilation systems and exhaust vents. Advantages: 1) Reduces pollution 2) Makes the environment clean 3) Reduces indoor air pollutants. 4) Reduces germs and pollutants 5) Makes the indoor temperature normal and humid.6) Brings in fresh air.Disadvantages:1) Power-only system consumes energy.2) Produces noise.Typical ventilation system