Almost every heating system that is now available in the market follows environmental safety methods. They are also designed to improve the quality of indoor air. They are more efficient and use lesser energy than older units. The technologies that are used are also getting better. High efficiency boiler control system also contributes to the improvement in the modern HVAC system. They also have direct digital control system. The motors used now are energy efficient.
The chiller performance has now improved a lot than what it used to be earlier. The size of the heat exchanger is what has contributed to its improvement. The manufacturers are now manufacturing larger heat exchanger for HVAC unit so as to improve the heat transfer feature of the chiller. Micro processor electronic controls are now used which make the unit more efficient and reliable. Apart from these features they are also made more environmental friendly. Earlier refrigerant loss and leaks of HVAC units were common which not only decreases the durability and efficiency of the unit but also leads to environmental pollution. The refrigerant containers that are now manufactured are designed in such a manner that the losses are limited to less than 0.5 percent. With regular maintenance and proper insulation, installing a modern HVAC system can save you a lot of money. If you have an old system, then replace it with a new one. Do check the SEER rating at the time of purchase. The higher the SEER rating the more you can save on energy bills.