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It's easy to assume that the HVAC system is running correctly. You may think that since you do not notice any immediate problem with your heating or air conditioning your air conditioner is working properly. This, however, can not be the case. Do not leave for annual inspection and service of HVAC. Without the routine visit by a service technician air conditioning, your furnace or air conditioner may not work as well and begin to operate inefficiently. The problems that otherwise could have been captured will be allowed to grow and cause damage to your air conditioning system, shortening its life. The most important reason why you should take steps to ensure that your heating and air conditioning service is security. The natural gas and oil HVAC systems burning fossil fuels, which can produce harmful byproducts like carbon monoxide. You certainly do not want to risk your health or your family from breathing poisonous gas, so be sure to have a professional HVAC techn...

Introduction Heating, ventilating, and air-conditioning (HVAC systems) account for 39% of the energy used in commercial buildings in the United States. Consequently, almost any business or government agency has the potential to realize significant savings by improving its control of HVAC operations and improving the efficiency of the system it uses. The use of high performance HVAC equipment can result in considerable energy, emissions, and cost savings (10%-40%). Whole building design coupled with an "extended comfort zone" can produce much greater savings (40%-70%). Extended comfort includes employing concepts such as providing warmer, but drier air using desiccant dehumidification in summer, or cooler air with warmer windows and warmer walls in winter. In addition, high-performance HVAC can provide increased user thermal comfort, and contribute to improved indoor environmental quality (IEQ). Given the range and complexity of the subject, this information should be vie...