How Long Does an HVAC System Last?


There’s a lifespan for everything, and your HVAC system is no different. But how long does an HVAC system really last? It depends on many factors, including what kind of system you have and how well you care for it.

System Type 

Different HVAC systems have different projected lifespans. Find out how long your system is expected to last. 

HVAC System Lifespans
Furnace - 20 years
Heat pump - 15 years
AC unit - 10 years
Tankless water heater - 25 years
Electric water heater - 10 years
Gas water heater - 10 years
Mini Splits - 20 years

While there are a variety of factors that determine how long your heating and cooling system will actually last, these projections can give you a general idea. This way, you can plan for when you need to get in touch with an HVAC repair service so you can fix your current system or install a new one. 

System Maintenance 

Just like with anything you own, the lifespan of your HVAC system is determined in part by the way it’s maintained. Many factors can dramatically reduce the lifespan of your heating and cooling system, including environment, maintenance, installation, and usage. 

Corrosive environments

A corrosive environment, like a salty coast, can reduce your HVAC system’s lifespan up to eight years. Frequently cleaning the unit can slow this process, as you can remove salt before it has time to build up and rust your system.

Maintenance practices

When you have a licensed technician complete regularly scheduled maintenance on your HVAC system, they can identify and repair small, inexpensive problems before they become larger, more costly problems, including a total unit replacement. 


Having a handy friend or family may be a tempting, affordable option when it comes to your HVAC system installation, but it’s not the best way to go. A qualified technician who knows your system inside and out can ensure your heating and cooling system is installed properly so it works as intended, without incident, from day one. 


The comfort of your home and effectiveness of your HVAC system rests heavily on how you use it. Many people turn their heat or AC on without remembering to close windows or doors, which forces your system to work harder, leading to inevitable issues and required repairs. 

Knowing these factors and keeping them in mind over the years can help you successfully maintain your heating and cooling system so it runs well for years to come. 

How Long Will Your System Last?

The truth is, you never really know how long your HVAC system is going to last. Generally, though, if you invest in high-quality heating and cooling equipment, you should get many good years of service from it, and you’ll probably see your HVAC system outlast some of your other household appliances. If you could benefit from HVAC repair service or want to learn more about your options, give us a call at 714-643-6507! We proudly serve all homeowners in Mission Viejo, CA and the surrounding communities. 


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