A HVAC unit helps to control the climate at a comfortable level in both residential as well as commercial buildings. A HVAC system now comes with more refined technology that ensures the maximum comfort during the harshest climates. Air conditioning systems are in continuous development that it is becoming more efficient, affordable and reliable to operate. The concept of residential air conditioner has become wide spread since 1950. Since then and until date there has been a lot of advancement in the technology of an air conditioner. Energy efficient HVAC system is what we have gained over the years of research and improvement in the technology of air conditioning.
Earlier heating and cooling units where only used in commercial buildings now the whole concept has changed and installing HVAC units have become more widespread in residential buildings as well. While comparing traditional cooling units HVAC units are more efficient and can be controlled a lot easily. A modern unit not only helps in cooling and heating but also can control the humidity and purify the air thus maintaining a comfortable atmosphere through out the building. The major parts comprising a modern HVAC unit are the external condenser and the internal evaporator. Modern units have the facility of zonal control which helps the user to control the temperature of a particular room or area in the building. Though the installation of a modern unit may cost you more than a traditional one, the amount can be recovered within a few years from its low operating cost feature.