HVAC repair should be the first option for a 7-year-old air conditioner or other HVAC system that is not functioning properly.
Most HVAC systems, whether it’s an air conditioner, gas furnace or heat pump, can be expected to last 10-20 years with regular HVAC service. Normally, a 7-year-old air conditioner would only be half-way through its product life cycle. In many cases, it may still be under warranty.