Heating Ventilation and Air Conditioning – Weather permitting, the system is tested for operation in heating and cooling modes. Air conditioners are not to be operated at temperatures below 16C or 61F. There are MANY different types of HVAC systems, so the following will not apply to every home. Heating and air conditioning components are dated and inspected for overall condition. Systems are turned on using their thermostat(s) or switches. Filters are located and inspected and each room is checked for the presence of a heat source.
There are SO many types of HVAC systems, and each has its own inspection process and limitations. Some systems are limited to simply operating them using the controls and making recommendations based on age and condition. At times there will be a service record present which give you a glimpse into how the previous owner maintained the system, which can be insightful. As a rule HVAC systems are costly to replace and, in almost every case, should be serviced upon move in. HVAC techs will have access to interior components and product specific knowledge that homeowners and home inspectors do not. I can give you a good idea of how the system is doing, and how long the average lifespan is, but no one can predict failure. Your HVAC tech will give you the best advice moving forward.