It's highly unlikely that your HVAC unit will last for 30 years before it needs to be replaced. However, with proper maintenance and operation, you can increase your chances of keeping the same unit for about 15 years. Gas ovens usually have a lifespan of 20 to 30 years or even longer, while petroleum furnaces usually only last 10 to 15 years due to maintenance problems caused by an inefficient fuel. The average life expectancy of an HVAC system is 20 years, but they can last between 10 and 30 years depending on various factors such as the brand you buy, how often you use it and whether you perform maintenance.
In the United States, the average lifespan of an air conditioning system is 14 years. If your 20-year-old air conditioning system regularly blows warm air or makes loud noises, it could be a sign that it's time to replace it. Even with a newer, more energy efficient air conditioning system, if your home isn't properly insulated or professionally sealed, the lifespan of the air conditioning system is automatically shortened. Regular cleaning and annual professional HVAC maintenance by a local HVAC technician can significantly extend its lifespan. When it's time to replace your air conditioning system, there are incentives to make the transition to a heat pump easier to afford. Heating, ventilation and air conditioning technology has advanced significantly and your home's energy efficiency is being affected by the fact that older air conditioning technology is preserved, so it may be time to think about replacing it, even if it “continues to work properly”.
Many utility companies will offer you discounts on air conditioning systems when you're ready to upgrade your air conditioning system to a model that saves energy. The key to getting the most out of your HVAC system is proper maintenance and operation. Regular cleaning and annual professional HVAC maintenance by a local HVAC technician can help extend its lifespan significantly. Additionally, if your home isn't properly insulated or professionally sealed, the lifespan of the air conditioning system is automatically shortened. When it's time to replace your air conditioning system, there are incentives available from many utility companies that can make the transition easier.