The HVAC (heating, ventilation, and air conditioning) system is a complex mix of components that work together to provide a home or business with reliable treated air. In the process, they have several components that may wear down out as the blower system and temperature sensing controls. If any of these items fail, then it is time for heating and cooling unit repair in Norfolk VA. Another shared component is the thermostat. This device is used to set the desired temperature and to signal the appliance when it is time to turn itself on or off. Modern HVAC systems tend to use electronic thermostats for better efficiency, but the less costly models may still use the mechanical versions.
The AC portion of the HVAC works by compressing a refrigerant outside of the building. This causes a state change in the chemical so that it can collect heat when it cycles through the evaporator coil. The change also lowers the temperature of the refrigerant and this is what chills the metal of the coil. Air is forced through the coil where it is quickly chilled before entering the delivery ducts. This is where the HVAC gets the nickname “forced air system.” Refrigeration systems like the AC also use a small device known as a dryer to keep water from entering the compressor. A faulty dryer can prevent the device from functioning correctly.
The furnace portion of the appliance may also need Heating And Cooling Unit Repair in Norfolk VA because it uses various sensors to activate things in the proper sequence. For example, the blower should not turn on or off until the air in the exchanger reaches a certain temperature. Temperature level is determined by a sensor located inside the plenum. This prevents the system from pumping out a lot of cold air and reduces the stress that could occur by simply shutting off the heat. Other reasons that a furnace may need repairs is the ignition source on a gas model or the heating element on an electric one. Newer gas burning units use a Piezoelectric system to ignite the fuel. If this system fails to work, then the device never begins generating heat. Contact us to learn more about repairing an HVAC or other comfort appliance.
