How Long Does an HVAC System Last?

One of the essential factors in determining whether a home is comfortable or not is the HVAC system. When the HVAC system starts having issues, it's going to be a troubling time for you.

Whether it doesn't cool as much in the summer as it used to, or the furnace won't work on any setting except max, there's a fixed lifespan for every HVAC system despite the number of repairs you perform.

Even the best HVAC systems don't manage to go past the 15-25-year mark. Here's a complete overview of the life of an HVAC system.

Overview Of The Life Of An HVAC System

There are different components that help make up the HVAC system of any household. Each of the components has a lifespan, which can generally be extended through careful usage and regular maintenance.


Furnaces generally last between 15-25-years. If installed correctly, the furnace will last for a long time. However, the lifespan depends on the level of maintenance and the amount of use the furnace goes through.

Air Conditioning Unit

Air conditioning units tend to have a lifespan of around 15 years. The lifespan depends on a lot of different factors. Among the most important factors that contribute to the lifespan is the unit's fitting, the level of maintenance, and should be the correct size for the home.

Heat Pump

Heat pumps tend to have a lower life expectancy than the furnace because they're running all the time. To get a heat pump that fulfills its lifespan, regular and proper equipment maintenance is necessary.


Thermostats don't need a lot of fixing and will efficiently run properly for around 25 years. There's a new trend in recent years with the introduction of smart thermostats. These give access to more user settings and can result in a substantial reduction in energy costs!


Signs The HVAC System May Be Getting Old

The time will inevitably come when you're going to need an HVAC replacement. You can help address the problem by identifying when you need to get an HVAC replacement or repairs.

Consistent Breakdowns

It's natural to expect the HVAC system to break down every few years. However, if the breakdowns become more consistent, it might be a sign that your HVAC system is getting old. The older the system gets without an HVAC replacement, the greater your repair bill will be!


Slow Air Flows

One of the surest shot signs of an aging HVAC unit is slow airflows. If the airflow in the household changes, it's time that you call an HVAC repair professional to assess the damage. It's challenging for non-professionals to identify issues with the HVAC system.


Leaks aren't going to completely stop the HVAC system from functioning. However, a lot of leaks together are going to prove to be a costly repair job. Indoor leaks are more comfortable to spot, while outdoor leaks require significantly more searching. If leaks are consistently springing up it, might be time to consider getting an HVAC replacement.

If you need any more HVAC advice, support, or service, reach out to External link opens in new tab or windowShriver Mechanical or call 770-975-1927!