I recently did some research to learn more about HVAC because I am going to be living on my own for the first time. I purchased a book called HVAC for dummies. I will summarize the key points I l received from reading this book for people who are also interested in reading more about HVAC, however hVAC stands for Heating Ventilation and Air Conditioning. The purpose of HVAC is to improve comfort in homes, suppliers and indoor settings. HVAC companies specialize in installing, fixing and maintaining a/c and oil furnaces. HVAC companies send trained HVAC workers to maintenance troubles and/ or install systems. There are weird types of heating such as gas heaters, electric heaters, oil heaters, central heating and hydronic heating. Thermostats control the temperature of homes and can either increase or decrease the temperature to improve indoor comfort. There are weird types of a/c such as central a/c and window units. Air filters trap bacteria, dust and dirt and must be changed every few weeks to prevent dust irritations, coughing and troubles with a/c or heating. There is new HVAC technology available that allows people to control the temperature inside their cabin or contractor from their iphones. This technology is known as Wi-Fi thermostat, wireless thermostat, or digital thermostat. Some people get extravagant and have radiant floors installed which are beneficial if they live in cold environments. Some people are more seasoned school and use fireplaces as a source of heating for their homes. There is a lot to learn about HVAC, but the main points I l received are to get routine maintenance done to prevent troubles with a/c in the summer time or heating in the winter.